Sure-Seal /Sure-Weld FleeceBACK AFX Cold Applied Adhered Roofing System

Transcription

1 Sure-Seal /Sure-Weld FleeceBACK AFX Cold Applied Adhered Roofing System April 2005 TABLE OF CONTENTS Part I General Page 1.01 Description Quality Assurance Submittals Product Delivery, Storage and Handling Job Conditions Warranty...6 Part II - Products 2.01 General Membrane Cold Applied Adhesive /Underlayment Fasteners Other Products...8 A. Other Related Carlisle Products...8 B. Cut-Back Asphalt...9 C. One-Way Pressure Relief Vents...9 D. Wood Nailers...9 E. Vapor Retarder...9 Part III - Execution 3.01 General Roof Deck Criteria / Substrate Requirements Attachment FleeceBACK AFX Membrane Installation Sure-Seal FleeceBACK AFX Membrane Splicing With SecurTAPE or Factory Applied SecurTAPE Sure-Weld FleeceBACK AFX Hot Air Welding Procedures Additional Membrane Securement Flashing Roof Walkways...21 Attachments Attachment I Membrane Physical Properties Attachment II 20-Year Warranty Design Enhancements Attachment III Underwriters Laboratories & Factory Mutual Code Approval Guide Details

2 Sure-Seal /Sure-Weld FleeceBACK AFX Cold Applied Adhered Roofing System PART I 1.01 DESCRIPTION A. Sure-Seal GENERAL April 2005 The Cold Applied Roofing System utilizes Sure-Seal (black) FleeceBACK AFX or FleeceBACK AFX Plus membrane with a total thickness of approximately 90-mil thick for AFX and 105-mil thick for AFX Plus (45-mil or 60-mil thick non-reinforced EPDM membrane laminated to a 7.5 ounce per square yard, non-woven polyester, polypropylene blended fleece-backing). Fleece backed membrane is fully adhered to an acceptable substrate with Cold Applied Adhesive, an asphaltmodified polyether VOC free adhesive. Adjoining sheets of membrane are spliced together with Factory- Applied SecurTAPE and Primer. Sheet end laps are butted and overlaid with Sure-Seal Cured Cover Strip or overlapped and overlaid with Sure-Seal Pressure-Sensitive Overlayment Strip. B. Sure-Weld The Cold Applied Roofing System utilizes Sure-Weld FleeceBACK AFX or Sure-Weld FleeceBACK AFX Plus membrane with a total thickness of approximately 120-mil thick for Sure-Weld AFX and 135-mil thick for Sure- Weld AFX Plus (45-mil or 60-mil thick reinforced Thermoplastic Polyolefin (TPO) membrane laminated to a 10 ounce per square yard, non-woven polyester, polypropylene blended fleece-backing). Fleece backed membrane is fully adhered to an acceptable substrate with Cold Applied Adhesive, an asphaltmodified polyether VOC free adhesive. Adjoining sheets of membrane are overlapped and joined with a minimum 1-1/2 inch wide hot air weld. Sheet end laps are butted together and overlaid with Sure-Weld Reinforced Membrane and hot air welded QUALITY ASSURANCE A. Carlisle recommends the use of Carlisle supplied products with this roofing system. The performance or integrity of products by others, when selected by the specifier and accepted as compatible by Carlisle, is not the responsibility of Carlisle and is disclaimed by the Carlisle Warranty. B. This roofing system must be installed by a Carlisle Authorized Roofing Applicator in compliance with shop drawings as approved by Carlisle. There must be no deviations made from Carlisle's specifications or the approved shop drawings without the PRIOR WRITTEN APPROVAL of Carlisle. C. After completion of the installation, upon request, an inspection shall be conducted by a Field Service Representative of Carlisle SynTec Incorporated to ascertain the membrane system has been installed according to Carlisle s published specifications and details applicable at the time of bid. This inspection is to determine whether a warranty shall be issued. It is not intended as a final inspection for the benefit of the owner SUBMITTALS A. To ensure compliance with Carlisle's warranty requirements, the following projects should be forwarded to Carlisle for review prior to installation, preferably prior to bid. 1. Projects where building height exceeds 50 feet Cold Applied - 4/2005 3

3 2. Air pressurized buildings or buildings with large openings where the total wall openings exceed 10% of the total wall area on which the openings are located (such as airport hangars, warehouses and large maintenance facilities). 3. Cold storage buildings and freezer facilities. 4. Projects where the membrane is expected to come in direct contact with petroleum-based products or other chemicals. 5. Projects where wind speed coverage greater than 55 mph is specified. Along with the project submittals (shop drawing and Request for Warranty), the roofing contractor must include pullout test results when fasteners are used for insulation or base sheet securement into fibrous cement, lightweight insulated concrete, gypsum, or Oriented Strand Board (OSB). B. For all projects, prior to project inspection by Carlisle, a final shop drawing must be approved by Carlisle PRODUCT DELIVERY, STORAGE AND HANDLING A. Deliver materials to the job site in the original, unopened containers labeled with the manufacturer's name, brand name and installation instructions. B. Job site storage temperatures in excess of 90 F may affect shelf life of curable materials (i.e., Cold-Applied Adhesive, splicing cement, sealants, cleaners, primers, SecurTAPE, Pourable Sealer, Pressure-Sensitive Overlayment Strip and uncured flashing). C. When liquid adhesives and sealants are exposed to lower temperatures, restore to a minimum of 60 F before use. Do not store containers with opened lids due to loss of solvent that will occur from flash off. D. Membrane should be stored in its original plastic wrap or be covered to protect from moisture. Any moisture absorbed by the fleece-backing must be removed by using a wet-vac system, prior to membrane mopping. E. When specified, insulation must be stored so it is kept dry and is protected from the elements. Store insulation on a skid and completely cover with a breathable material such as tarp or canvas. If the insulation is lightweight, it should be weighted to prevent possible wind damage JOB CONDITIONS A. Do not apply Cold-Applied Adhesive when ambient temperatures are below 40 F. B. Opened containers of adhesive should be used with 2-3 weeks. The adhesive will form a thick surface skin that will not re-dissolve. Adhesive can be used once the skinned layer is removed. C. There are no maximum slope restrictions for the application of this FleeceBACK AFX roofing system. On Sure-Weld Roofing Systems, a slope greater than 1/8 per horizontal foot is recommended to serve longterm aesthetics. When the slope exceeds 5 per horizontal foot, use of an automatic heat welding machine may be more difficult. Hand held heat welders should be specified. D. On retrofit-recover projects, existing roofing material must be investigated and wet material must be removed. E. Existing Phenolic must be removed. F. The use of a vapor retarder to protect insulation and reduce moisture accumulation within an insulated roof assembly should be investigated by the specifier. Consult the latest publications by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.) and NRCA (National Roofing Contractors Association) for specific information. G. Petroleum based products, certain chemicals and waste products (i.e., grease, oil, animal fats, etc.) are not compatible with this roofing system. Carlisle should be contacted for verification of compatibility and recommendations concerning an acceptable roofing assembly Cold Applied - 4/2005 4

4 H. The following projects should be sent to Carlisle for review, prior to installation and preferably prior to bid, to ensure that Carlisle's minimum warranty requirements are met: 1. Air pressurized buildings, canopies, and buildings with large openings where the total wall openings exceed 10% of the total wall area on which the openings are located (such as airport hangars, warehouses and large maintenance facilities). 2. Total System Warranty projects where wind speed coverage greater than 55 mph peak gusts is specified. 3. Projects where a 20-year Total System Warranty is specified. 4. Cold storage buildings and freezer facilities. I. It is the responsibility of the specifier to review local, state and regional codes to determine their impact on this roofing system. J. Coordination between various trades is essential to avoid unnecessary rooftop traffic over sections of the roof and to prevent damage to the membrane. K. Drainage 1. Drainage must be evaluated by the specifier in accordance with all applicable codes. Slopes may be provided by tapering the structure or through the use of tapered insulation; a sufficient number of roof drains should also be specified and properly located to allow for positive drainage. Significant ponding that could remain after 48 hours should be eliminated with the addition of auxiliary drains in low areas where ponding is anticipated. Carlisle specifically disclaims responsibility for design and selection of an adequate drainage system and drain accessories. The selection must be made by the building owner or the owner's design professional. 2. Incidental areas of ponded water will not impact the performance of this roofing system; however, in accordance with industry standards, the roofing assembly should be designed to prevent ponding of water on the roof for prolonged periods (longer than 48 hours). Good roofing practice dictates proper drainage to prevent possible excessive live loads and, in the event of a roof leak, to minimize potential interior damage to the roofing assembly and to the interior of the building. 3. Tapered edge strips, crickets or saddles are recommended where periodic ponding of water may occur. L. Retrofit - Recover Projects (when the existing roofing material is left in place) 1. The removal of existing wet insulation and membrane must be specified. The specifier shall select an appropriate and compatible material as a filler for voids created by removal of old insulation or membrane. 2. Entrapment of water between old and new membrane can damage and deteriorate new insulation/underlayment between the two membranes. If a vapor retarder or air barrier is not specified, Carlisle recommends existing membrane be perforated to avoid potential moisture accumulation to allow for detection of moisture to enable the building owner to take corrective action. This can be accomplished by drilling approximately 3/4 diameter holes every 100 square feet in the existing built-up roof or single-ply membrane (excluding PVC membrane). 3. Existing PVC membrane may be totally removed or must be cut into maximum 10 foot by 10 foot sections. All PVC flashings at the perimeter, roof drains and roof penetrations must be removed. 4. When specifying this roofing system over an existing gravel surfaced built-up roof, loose gravel must be removed to avoid entrapment of moisture. In all cases, a membrane underlayment is required. Refer to Paragraph 3.03, /Substrate Requirements, for minimum thickness of acceptable underlayment Cold Applied - 4/2005 5

5 5. Existing Phenolic Foam insulation must be removed prior to the installation of this roofing system WARRANTY A. 5 or 10-year System Warranties are available for a charge on commercial projects. B. 10 or 15-year Golden Seal Total System Warranties are also available for a charge. Projects with a Total System Warranty must incorporate materials from among those manufactured, marketed or specifically approved by Carlisle. C. A 20-year Total System Warranty is available for a charge for projects utilizing FleeceBACK AFX Plus membrane and incorporating additional design enhancements as outlined in Attachment II in this specification. D. Wind speed coverage greater than 55-mph is available upon review by Carlisle prior to installation to determine if applicable enhancements are necessary. E. Warranty coverage for leaks caused by hailstorms can be issued for an additional charge. 1. Assemblies with FleeceBACK AFX membrane could qualify for hail coverage up to 1 in diameter 2. Hail coverage up to 2 in diameter could be obtained for assemblies utilizing FleeceBACK AFX Plus. Contact Carlisle for specific warranty terms and conditions. F. When FleeceBACK AFX Plus is specified, a warranty with limited coverage for accidental punctures (up to 16 man-hours per year) is also available. G. Access for warranty service It shall be the owner's responsibility to expose the membrane in the event warranty service is required when access is impaired. Such impairment includes, but is not limited to: 1. Design features, such as window washing equipment, that require the installation of traffic surface units in excess of 80 pounds per unit. 2. Any equipment, ornamentation, building service units and other top surfacing materials which are not defined as part of this specification. 3. Rooftop equipment that does not provide Carlisle with reasonable access to the membrane system for purposes of warranty investigation and related repairs. 4. Severely ponded conditions. CAUTION: APPLICATIONS SUCH AS WALKING DECKS, TERRACES, PATIOS OR AREAS SUBJECTED TO CONDITIONS NOT TYPICALLY FOUND ON ROOFING SYSTEMS WILL NOT BE ELIGIBLE FOR A SYSTEM WARRANTY. H. The formation or presence of mold or fungi in a building is dependent upon a broad range of factors including, but not limited to, the presence of spores and nutrient sources, moisture, temperatures, climatic conditions, relative humidity, and heating / ventilation systems and their maintenance and operating capabilities. These factors are beyond the control of Carlisle and Carlisle shall not be responsible for any claims, repairs, restoration or damages relating to the presence of any irritants, contaminants, vapors, fumes, molds, fungi, bacteria, spores, mycotoxins, or the like in any building or in the air, land, or water serving the building. PART II PRODUCTS 2.01 GENERAL The components of this roofing system are to be products of Carlisle. The installation, performance or integrity of products by others, when selected by the specifier and accepted as compatible by Carlisle, is not the Cold Applied - 4/2005 6

6 responsibility of Carlisle and is expressly disclaimed by the Carlisle Warranty MEMBRANE A. Sure-Seal FleeceBACK AFX EPDM membrane incorporates Sure-Seal (black) 45-mil or 60-mil thick nonreinforced EPDM membrane laminated to a 7.5 ounce per square yard, non-woven polyester, polypropylene blended fleece-backing resulting in a total thickness of approximately 90-mil (AFX) or 105-mil (AFX Plus). This membrane is available in a width of 10 feet and lengths of 50 or 100 feet. A nominal 3 or 6 wide selvage edge with Factory-Applied SecurTAPE is provided on one edge along the length of the membrane for splicing. Refer to Attachment I at the end of this section for Membrane Physical Properties. B. Sure-Weld FleeceBACK AFX TPO membrane incorporates Sure-Weld (white) 45-mil or 60-mil thick reinforced TPO membrane laminated to a 10 ounce per square yard, non-woven polyester, polypropylene blended fleece-backing resulting in a total thickness of approximately 120-mil (Sure-Weld AFX) or 135-mil (Sure-Weld AFX Plus). This membrane is available in a width of 6 feet or 12 feet and length of 75 feet. A nominal 3 wide selvage edge is provided on one edge along the length of the membrane for heat welding. Refer to Attachment I at the end of this section for Membrane Physical Properties COLD-APPLIED ADHESIVE Carlisle s Cold-Applied Adhesive is an asphalt-modified polyether VOC free adhesive. This product is a one-sided, wet lay-in adhesive with Sure-Seal or Sure-Weld FleeceBACK AFX Membranes. Coverage rate is 1.5 gallons per square or 67 square feet (6.2 sq m) (26-mils) per gallon for smooth surfaces and 50 square feet (4.6 sq m) (32-mils) for uneven or semi-absorbent surfaces. Coverage rates are average and may vary due to conditions such as insulation type, surface, air temperature, and equipment (spreader), type of squeegee or paint roller INSULATION/UNDERLAYMENT A. Sure-Seal Polyisocyanurate HP-H, HP-N and HP-W A foam core insulation board covered on both sides with a medium weight fiber-reinforced felt facer meeting ASTM C Meets test method CAN/ULC- S770 for determining a 15 year time-weighted average Long Term Thermal Resistance (LTTR). The product is available in 4 x 8 standard size with a thickness from 1 to 4 inches in 1 inch increments. 4 x 4 tapered panels are also available. Physical Property Test Method Specification 25 psi 20 psi Compressive Strength ASTM D 1621 Procedure A Min. 25 Min. 20 Moisture Vapor Transmission, perms ASTM D 355 Max. 1.0 Max. 1.0 Foam Core Density lb/ft 3 ASTM D 6122 Min. 2.0 Nominal 2.0 Flame Spread (foam core) ASTM E 84 Max. 25 Max. 25 Service Temperature, range in F to to 250 Refer to applicable Technical Data Bulletin for available thickness and Long-Term Thermal Resistance (LTTR). B. Sure-Seal Polyisocyanurate/OSB Composite Sure-Seal Polyisocyanurate insulation bonded on the bottom side with a medium weight fiber-reinforced felt face and laminated with a top surface of 7/16 thick Oriented Strand Board (OSB). Available in 4 x 8 boards with thickness from 1-1/2 to 4 in 1/2 increments. Physical Property Test Method Specification Compressive Strength ASTM D psi Dimensional Stability ASTM D % Linear change 7 days Moisture Vapor Transmission ASTM E 96 <1perm (PA s m 2 ) Water Absorption ASTM C209 <1% volume Service Temperature to 250 F C. Sure-Seal HP Recovery Board - A 1/2 or 1 thick high-density wood fiberboard with an asphalt coated facer. The HP Recovery Board is used as a membrane underlayment over Sure-Seal Polyisocyanurate (minimum 20 psi) or Sure-Seal EPS or Extruded Polystyrene. D. Sure-Seal EPS or Extruded Polystyrene May be specified beneath Sure-Seal HP Recovery Board, Dens-Deck Prime or Oriented Strand Board. Refer to applicable Technical Data Bulletin for physical properties Cold Applied - 4/2005 7

7 E. Carlisle Modified Base Sheet - A tough, glass fiber, reinforced, SBS-modified asphalt, base sheet (nominal 39" wide by 50' long) that meets or exceeds the requirements for ASTM D 6163 Type I, Grade S for SBSmodified bituminous sheet materials. As an option, this base sheet can be used as an overlayment in lieu of Carlisle HP Recovery Board. Refer to Paragraph 3.03.F for requirements. F. Other Membrane Underlayments: 1. Dens-Deck Prime Roof Board (supplied by Carlisle) 1/4, 1/2 or 5/8 thick moisture resistant treated gypsum core that incorporates glass-mat facings on the top and bottom side. The top surface is preprimed and provides excellent bond strength. The Dens-Deck Prime may be used as a membrane underlayment in conjunction with other Carlisle insulations for roofing assemblies. 2. Oriented Strand Board (OSB) - Minimum 7/16 thick APA rated exterior grade wood strands bound with a waterproof heat-cured adhesive. OSB is not supplied by Carlisle but can be included in the Carlisle warranty for an upcharge FASTENERS A. HP Fastener: A threaded, black epoxy electro-deposition coated (E-Coat) fastener for use with steel, wood plank or minimum 15/32" thick plywood decks. Minimum 360 pounds pullout resistance is required. B. HP-X Fasteners: A heavy-duty #15 threaded fastener with a Phillips head for use where increased pullout resistance is necessary. Used for steel and wood decks. Minimum 360 pullout resistance is required. C. CD-10 Concrete Fastener: A hammer-driven, non-threaded, black epoxy electro-deposition coated (E-Coat) fastener for use with structural concrete decks rated 3,000 psi or greater. Minimum 800 pounds pullout resistance is required. D. HD Concrete Fastener: A #14 threaded fastener used for minimum 3,000 psi concrete decks. Minimum 800 pounds pullout resistance is required. E. HP-NTB Fastener: A non-penetrating, plastic fastener and corresponding plate used with lightweight deck substrates such as cementitious wood fiber and gypsum. Minimum 225 pounds (cementitious wood fiber decks) and 300 pounds (gypsum decks) pullout resistance is required. F. Lite-Deck Fastener An oversized diameter, metal-coated fastener with a deep coarse thread design used to achieve high pullout resistance into gypsum decks. Minimum 300 pounds pullout resistance is required. G. Term Bar Nail-In: A 1-1/4 long expansion anchor with stainless steel drive pin used for fastening the Sure- Seal Termination Bar or Seam Fastening Plates to concrete, brick or block walls. H. Fastening Plate: A nominal 3" diameter FM approved metal plate used for insulation attachment in conjunction with Sure-Seal Fasteners. I. Carlisle Dual-Prong Fastener - A factory pre-assembled, 1.8" long fastener consisting of a precision tube formed from galvanized (G-90) coated steel, a 2.7" diameter disk formed from Galvalume (AX-55) coated steel, and a locking staple of high tensile steel wire. Use of this fastener is to secure base sheets to fibrous cement providing 70 pounds of pullout resistance OTHER PRODUCTS A. Other Related Carlisle Products 1. Sure-Seal Products SecurTAPE, Primer, Splice Cleaner, Splicing Cement, In-Seam Sealant, Lap Sealant, Cured EPDM Flashing, Cured Cover Strip, Pressure-Sensitive Overlayment Strip, Elastoform Flashing, Termination Bars, Fasteners/Plates Water Cut-Off Mastic, Pourable Sealer, Walkway Pads/Rolls, Pre-Molded Pipe Seals and Pressure-Sensitive Inside/Outside Corners are used with this roofing system. Other Carlisle products, such as insulation and edgings/copings are also required when such components are to be included as part of the System Warranty Cold Applied - 4/2005 8

8 2. Sure-Weld Products Sure-Weld Flashing, Adhesive, Cut-Edge Sealant, Water Cut-Off Mastic, PT 304 Sealant, TPO Molded Pocket Sealant, Weather Membrane Cleaner, Pressure-Sensitive Cover Strip, Coated Metal, Heat Weldable Walkway Rolls, Pre-Molded Accessories, and Carlisle HP-250 Primer, Termination Bars, Fasteners/Plates are used with this roofing system. Other Carlisle products, such as insulation and edgings/copings are also required when such components are to be included as part of the System Warranty. B. Cut-Back Asphalt Primer Cut-Back Asphalt Primer that meets ASTM D 41 and is used to prime new or existing structural concrete decks, existing smooth BUR, mineral surfaced cap sheet, or modified bitumen membranes prior to application of the Cold-Applied Adhesive. Coverage rate is 1 to 2 gallons per 100 square feet depending on surface porosity. Allow a minimum of 5 to 7 days for asphalt primer solvents to dissipate before the application of the Cold Applied Adhesive. CAUTION: Confirm curing compounds used in conjunction with concrete decks are compatible with this attachment method by the concrete curing compound manufacturer. Certain curing compounds develop a wax-like seal or oil coating on the concrete s surface that can prevent the Cold Applied Adhesive from adhering to the substrate. C. One-Way Pressure Relief Vents Relief vents are to be a.060 thick spun aluminum with a base flange diameter of 11-1/2 and a height of no less than 11. The vent base opening shall be 6-1/2 with 4-1/2 counterflashing and locking / vandal proof rain cap. Vents are required when the membrane is adhered over lightweight insulating concrete at the rate of 1 every 1,000 to 2,000 square feet depending on the type of lightweight insulating concrete. (Refer to Detail SSC-8 or SWC-8). D. Wood Nailers A horizontal wood nailer provides an effective substrate for some installation details and for other roof accessories. In addition, it is used to provide solid protection for the edge of the membrane underlayment. Minimum thickness of the nailer must be such that the top of the nailer is flush with the top of the membrane underlayment. 1. Wood nailers are required for the securement of metal edgings, metal scuppers, and certain curbs, pipes, etc., as shown on the applicable detail. Parapet walls and most curbs do not require the utilization of wood nailers. Note: The width of the nailers must exceed the width of the metal flange of edgings, scuppers, etc. 2. When wood nailers are used, it is recommended that only lumber that has been pressure treated with salt preservatives be specified. Lumber treated with any of the wood preservatives such as, Creosote, Pentachlorophenol, Copper Naphthenate and Copper 8-quinolinolate will adversely affect the FleeceBACK AFX membrane when in direct contact and are, therefore, unacceptable. 3. Methods used to fasten the nailer vary with building conditions; however, it is essential that secure attachment of durable stock be accomplished. Factory Mutual Loss Prevention Data Bulletin 1-49 (Perimeter Flashing) contains options for the spacing and sizing of fasteners based on the project wind zone. 4. Wood nailers are not covered by the Carlisle warranty. E. Vapor Retarder 1. The use of a vapor retarder to protect insulation and reduce moisture accumulation within an insulated roofing assembly should be investigated by the specifier, especially on projects with high interior humidity, such as, swimming pools, breweries, pulp mills, etc. In the generally temperate climate of the United States, during the winter months, water vapor flows upward from a heated, more humid interior toward a Cold Applied - 4/2005 9

9 colder, drier exterior. Vapor retarders are more commonly required in northern climates than in southern regions, where downward vapor pressure may be expected and the roofing membrane itself becomes the vapor retarder. 2. On cold storage/freezer facilities, the perimeter details must be selected to promote an air seal to prevent outside air from infiltrating and condensing within the roofing assembly. 3. Consult the latest publications by ASHRAE (American Society of Heating, Refrigerating and Air- Conditioning Engineers, Inc.) and NRCA (National Roofing Contractors Association) for specific information. PART III EXECUTION 3.01 GENERAL When feasible, begin application at highest point of highest roof level and work to lowest point to prevent moisture infiltration and minimize construction traffic on completed sections. This will include completion of all flashings and terminations ROOF DECK CRITERIA A. Proper decking shall be provided by the building owner. The building owner or its designated representative must ensure the building structure is investigated by a registered engineer to assure its ability to withstand the total weight of the specified roofing system as well as construction and live loads in accordance with all applicable codes. The specifier must also designate the maximum allowable weight and location for material loading and storage on the roof. B. Acceptable decks, minimum pullouts and approved Carlisle Fasteners (for mechanical securement of insulation, when specified): Deck Type Minimum Pullout Approved Fastener Minimum Penetration Steel, 22 gauge or heavier 360 pounds InsulFast, HP or HP-X Fasteners 3/4 Steel, less than 22 gauge 300 pounds InsulFast, HP or HP-X Fasteners 3/4 Structural Concrete, rated 3,000 psi CD-10 or 800 pounds or greater HD Fasteners 1 Wood Planks and Plywood, 1 InsulFast, HP or minimum 15/32 inch thick APA 360 pounds (Max. 1-1/2 on wood HP-X Fasteners Grade CDX planks) Oriented Strand Board (OSB), Minimum 7/16 inch thick APA rated non-veneer Fibrous Cement Gypsum 250 pounds HP or HP-X Fasteners 225 pounds HP-NTB Fasteners 1-1/2 70 pounds Dual-Prong Fastener 1.8" 300 pounds HP-NTB Fasteners 1-1/2 Lite-Deck Fasteners 2 Withdrawal resistance tests are strongly suggested to determine the suitability of a roof deck. Fibrous cement, gypsum, lightweight insulating concrete, steel decks lighter than 22 gauge and oriented strand board less than 5/8 inch in thickness must be tested. For proper procedures for conducting pullout tests, refer to Carlisle s Sure-Seal Adhered Roofing System Specification, Part 1 Design Criteria, Attachment I INSULATION/SUBSTRATE REQUIREMENTS A. General 1. Roof insulation thickness must be determined by the thermal value required for each project and may be subject to code approval limitations. On projects where a vapor retarder is used, the specifier must calculate insulation thickness to ensure the temperature at the vapor retarder will not fall below the dew point Cold Applied - 4/

10 2. Multiple layers of insulation are recommended with all joints staggered between layers. B. Structural concrete, gypsum, or wood decks 1. For new construction or projects with a complete tearoff of existing roof materials, the membrane may be adhered directly to the substrate. 2. The substrate must be relatively smooth, dry, free of protrusions, debris, frost, sharp edges and loose and foreign materials. All gaps in the substrate greater than 1/4 inch must be filled with suitable material. 3. If insulation is specified over the roof deck, refer to Paragraph 3.03 F for acceptable insulation/underlayment types. may be secured to the deck with Olybond 500 BA, Versagrip, or approved Carlisle Fasteners/Plates. C. Fibrous Cement Decks 1. When additional insulation is not specified, Carlisle Modified Base Sheet shall be mechanically fastened to the deck with Carlisle Dual-Prong Fasteners before membrane mopping in accordance with the fastening pattern shown. Refer to Paragraph 2.04.E and Paragraph 2.04.I for product descriptions. 9" 9" 10" 39" 9" 9" 11" 10" MIN. 1/2" MIN. 1/2" 2. If insulation is specified over the roof deck, refer to Paragraph 3.03 F for acceptable insulation/underlayment types. may be secured to the deck with Olybond 500 BA, Versigrip, or approved Carlisle Fasteners/Plates. D. Projects with new lightweight insulating concrete 1. FleeceBACK AFX Membrane may be adhered directly over certain types of cellular or perlite lightweight insulating concrete substrates which have a minimum compressive strength of 225 pounds per square inch. Carlisle must be contacted for acceptable lightweight insulating concrete substrates. a. Except when the lightweight insulating concrete is to be poured over slotted steel decks, pressure relief vents must be specified at a minimum rate of 1 every 2,000 square feet to relieve vapor pressure which may result from possible moisture entrapment beneath the lightweight insulating concrete between the time of concrete placement and membrane installation. 1) Vents must be installed in accordance with Detail SSC-8 or SWC-8. 2) Carlisle must be contacted for acceptable pressure relief vents. 2. The surface of the lightweight insulating concrete must be smooth finished, free of protrusions, sharp edges, frost and loose and foreign materials. 3. The direct application of this roofing system is not permitted on applications where the lightweight insulating concrete, regardless of type, is specified over an existing roofing material. 4. If a membrane underlayment is specified in conjunction with a lightweight insulating concrete substrate, refer to Paragraph 3.03 F for acceptable insulation/underlayment types Cold Applied - 4/

11 E. For projects over a smooth surface asphalt built-up roof, SBS modified bitumen or mineral surfaced cap sheet, where no additional insulation or underlayment is specified, the membrane may be adhered directly to the substrate. Do not adhere FleeceBACK membrane directly onto low melting point asphalt. When the softening point of the asphalt falls below 185 F, the minimum membrane underlayment must be 1/2 inch thick Sure-Seal HP Recovery Board, Dens-Deck or an acceptable insulation. Refer to Paragraph 3.03 F for acceptable insulation/underlayment types. 1. For slopes less than 2 inches to one horizontal foot, the specifier must investigate the existing roofing material to ensure the asphalt has a minimum softening point of 185 F. 2. The specifier should investigate previous repairs and contaminates to existing roofing material to determine if the softening point of the asphalt is below that mentioned above or other contaminants may contact the FleeceBACK AFX Membrane. Temporary repairs completed with any contaminants (i.e., plastic roof cement) must be removed. 3. The substrate must be relatively smooth, dry and clear of debris, fins, loose edges, foreign materials, oils, grease, frost and fresh roof cement. 4. Prepare the existing material with either Cut Back Asphalt Primer or power wash. F. For all other substrates, an acceptable insulation/underlayment is required. Any of the Carlisle underlayments listed below may be specified: Carlisle Minimum Thickness See Notes HP Recovery Board 1/2 1 Dens-Deck/Dens-Deck Prime 1/4 1 EPS/Composite Board 1-1/4 2 & 3 EPS overlaid with HP Recovery Board or Dens-Deck/Dens-Deck Prime or 3/4 2, 3 & 5 Carlisle Modified Base Sheet Thermapink or Dow Extruded Polystyrene overlaid with HP Recovery Board, Dens-Deck/Dens-Deck Prime or 3/4 2, 3 & 5 Carlisle Modified Base Sheet Polyisocyanurate HP-H, HP-N or HP-W 1 N/A Polyisocyanurate overlaid with HP Recovery Board or Dens-Deck/Dens-Deck Prime 1-1/4 N/A Notes: (1) 1/2 inch thick HP Recovery Board cannot be specified as the sole membrane underlayment over wide rib (Type B) or intermediate rib (Type F) steel decks. (2) Local codes must be consulted regarding the acceptance of polystyrene insulation directly over steel decks. (3) Sure-Seal EPS, the EPS surface of Sure-Seal EPS/Composite, Thermapink or Dow roof insulation cannot be installed directly over coal-tar pitch roof surfaces. An impervious separator sheet such as 6-mil polyethylene shall be installed beneath the insulation. (4) Thermapink or Dow insulation cannot be installed directly over existing PVC membranes. A protective mat must be used as a separator. (5) Carlisle Modified Base Sheet must be fastened following Detail SSC-27A or SWC-27B. Tapered Sure-Seal EPS, Thermapink 25, Dow Deckmate and Polyisocyanurate s are also available. G. s Supplied By Others Certain insulations are either chemically or physically incompatible with Carlisle's Roofing Systems. Therefore, insulations manufactured by others may be used only when the respective manufacturer has published a recommendation for their products successful performance as part of this roofing system and Carlisle accepts the use of the insulation as a compatible surface to which the roofing system may be adhered. Restrictions: 1. Perlite is not an acceptable underlayment for use with this roofing system. 2. Fiberglass insulation cannot be specified with this roofing system, even if overlaid with additional insulation or membrane underlayment Cold Applied - 4/

12 3.04 INSULATION ATTACHMENT A. When insulation is to be mechanically fastened to the roof deck, Carlisle Fasteners and Plates are required for all projects. B. Sure-Seal must be mechanically fastened to the roof deck with one 3 inch diameter plate and fastener every 2 square feet as shown in Carlisle Details A-27-A or SWA-27A, except as follows: 1. When a single or top layer of minimum 1-1/2 thick Sure-Seal Polyisocyanurate insulation is specified, the Carlisle insulation may be secured at the minimum rate of 1 per 4 square feet (8 fasteners per 4 x 8 board). Refer to Detail A-27-F or SWA-27D. 2. 1/4 inch or 1/2 inch Dens-Deck may be fastened at the rate of 15 fasteners/plates per 4 x 8 board (1 per 2.1 square feet). 1/4 or 1/2 Dens-Deck Prime may be fastened at the rate of 12 fasteners/plates per 4 x 8 board (1 per 2.67 square feet) Refer to Detail A-27-G or SWA-27F. 5/8 inch thick Sure-Seal Dens- Deck or Dens-Deck Prime may be fastened at the rate of 8 fasteners/plates per 4 x 8 board (1 per 4 square feet). Refer to Detail A-27-A or SWA-27A. 3. When insulation by others is specified, the fastening density and pattern must be recommended by the insulation manufacturer. If the fastening density is specified to be less than 1 fastener and plate every 2 square feet, the respective manufacturer must verify in writing their requirements concerning the fastening density and acceptable fastening pattern. 4. When an approved oriented strand board (OSB) is specified as the membrane underlayment, it must be mechanically fastened to the roof deck in accordance with Detail A-27-D or SWA-C. C. On steel and wood decks (excluding oriented strand board), as an option to Sure-Seal HP Recovery Board, insulation may be overlaid with Carlisle Modified Base Sheet which must be fastened using either Carlisle HP or HP-X Fasteners and 3" diameter Plates in accordance with Detail SSC-27 or SWC FleeceBACK AFX Membrane Installation General A. Membrane shall be stored in a dry area to prevent absorption of moisture in the fleece backing. If moisture is present, it must be removed with a wet vac system and the membrane must be allowed to fully dry prior to membrane adhesion. B. Position AFX membrane over the acceptable substrate without stretching. C. Allow membrane to relax approximately 1/2 hour before applying the Carlisle Cold-Applied Adhesive. Note: Due to stiffness of the Sure-Weld membrane, temporarily weigh down the ends of the membrane rolls to control re-curling of membrane until membrane lays flat. D. Fold the membrane widthwise and apply the adhesive to the substrate. E. Apply Carlisle Cold-Applied adhesive to the substrate in a bead or serpentine pattern avoiding globs, puddles and uncoated areas. Use a ¼ notched squeegee, a paint roller, or an acceptable spreader, to spread adhesive at the following coverage rates; 1.5 gallons per square or 67 square feet (6.2 sq m) (26-mils) per gallon for smooth surfaces and 2.0 gallons per square or 50 square feet gallon (4.6 sq m) (32-mils) for uneven or semi-absorbent surfaces. Note: Coverage rates are average and may vary due to conditions such as insulation type, surface, air, and adhesive temperatures. Coverage rates may also vary based on the spreader and or type of squeegee or paint roller used for applications. When using a spreader with the Cold Applied Adhesive, it may be necessary to squeegee or back roll adhesive to obtain proper coverage Cold Applied - 4/

13 F. Roll with a minimum 100 pound weighted roller to achieve maximum contact. G. Fold back the unbonded half of the membrane sheet and repeat the bonding procedure. H. Install adjoining membrane sheets in the same manner, overlapping edges to provide for the minimum splice width. Good roofing practice recommends all splices to be shingled to avoid bucking of water Seal FleeceBACK AFX Membrane Splicing With SecurTAPE or Factory Applied SecurTAPE A. General 1. For SecureTAPE Application - Refer to Carlisle s Sure-Seal Adhered Roofing System Specifications, Part II, Application or membrane splicing with SecurTAPE. 2. For Factory Applied SecurTAPE application, the splice area on the mating surface must be primed with Sure-Seal HP-250 or LV-600 Primer. LV-600 Primer is required in areas where volatile organic compound (VOC) regulations are in effect. Field splices at roof drains must be located outside the drain sump. B. Sure-Seal HP-250 or LV-600 Primer is applied to the mating surfaces of the membrane with a 1/2 medium nap roller to achieve a thin even coat. C. If membrane becomes contaminated with field dirt, etc., remove dirt or excess dust from mating surfaces of overlapping sheets by wiping with Sure-Seal HP Splice Wipes or clean natural fiber rags. Accumulated dirt, footprints, etc. must be removed by scrubbing membrane with Weathered Membrane Cleaner or HP-250 Primer. D. The coverage rate for HP-250 Primer is approximately 250 square feet per gallon. This equates to approximately 300 linear feet per gallon for a completed 3" wide splice area (primer applied on 5" wide area on both membrane surfaces). For LV-600 Primer, the coverage rate is approximately 600 square feet per gallon. This equates to approximately 720 linear feet per gallon for a completed 3" wide splice area (primer applied on 5" wide area on both membrane surfaces). E. Allow Primer to dry until tacky but does not transfer to a dry finger touch. Due to solvent flash-off, condensation may form on freshly applied HP-250 Primer when the ambient temperature is near the dew point. If condensation develops, application of Primer and SecurTAPE must be discontinued since proper adhesion will not be achieved. Allow primed surface to dry and apply a thin freshener coat of HP- 250 Primer to previously coated surface and apply SecurTAPE when conditions allow. F. Once primer is dry, allow the taped edge of the top sheet to fall freely onto the primed sheet below. G. Pull release film from Factory-Applied SecurTAPE beneath top sheet and allow top sheet to fall freely onto exposed primed surface. H. Press the top sheet onto the tape using firm, even, hand pressure across the splice towards the splice edge. I. Immediately roll the splice with Carlisle s Stand-up Seam Roller using positive pressure either parallel or perpendicular to the splice. When using a 2" wide steel roller, roll across the splice edge, not parallel to it. J. Install a 6" wide section (with rounded corners) of Pressure-Sensitive Overlayment Strip or Elastoform Flashing over all field splice intersections and seal edges of flashing with Lap Sealant. Refer to Detail SSC-2A and B. K. Cold Weather Restrictions - When Temperatures are Below 40 F (5 C) 1. After HP-250 Primer has been applied and allowed to properly dry, heat the primed area of the bottom membrane sheet with a hot air gun as the top sheet with Factory-Applied SecurTAPE is applied and pressed into place Cold Applied - 4/

14 2. Position the top sheet and remove the release film. Prior to rolling the splice with the 2" steel roller, apply heat to the topside of the splice area with a hot air gun. The heated surface should be very hot to the touch of bare skin (approximately the temperature of hot tap water). Take care not to burn or blister the membrane. L. Sure-Seal EPDM Membrane Splicing With Splicing Cement refer to Carlisle s Sure-Seal Adhered Roofing System Specifications, Part II, Application for membrane splicing with Splicing Cement and the application of Lap Sealant Sure-Weld FleeceBACK AFX Hot Air Welding Procedures A. General 1. Hot air weld the Sure-Weld membrane sheets using the Automatic Hot Air Welding Machine or Hot Air Hand Welder and silicone roller. For description of heat welding equipment and generator/electrical requirements, refer to Carlisle s Sure-Weld Adhered Roofing System Specification, Part II Application, Attachment II. 2. When roof slope exceeds 5 inches per horizontal foot, use of the Automatic Hot Air Welding Machine may become more difficult; use of the Hand Held Hot Air Welder is recommended. 3. Membrane has a selvage edge (fleece-backing is discontinued) on one side along the length of the sheet for membrane welding. Selvage edges are not provided along the width of the membrane. Adjoining membrane sheets shall be butted together, overlaid with 6 inch wide Sure-Weld Reinforced Membrane and hot air welded on all edges. Seal all membrane edges (where scrim reinforcement is exposed) with Cut-Edge Sealant. Note: When using Sure-Weld FleeceBACK AFX Plus Membrane, a surface splice of Sure-Weld non-reinforced flashing must be applied over all T joint splice intersections. Refer to Detail SWC-2. B. Check the surfaces of the Sure-Weld membrane to be hot air welded to ensure they are properly prepared as outlined below: C. Membrane Cleaning - The surfaces to be hot air welded must be clean. Membrane overlaps that become contaminated with field dirt must be cleaned with Weathered Membrane Cleaner and wiped dry with a clean HP Splice Wipe. No residual dirt or contaminants should be evident D. Exposed Membrane Seam Preparation - Surface oxidation of Sure-Weld membrane will occur upon exposure to heat and sunlight. After approximately 7 days exposure to the elements, membrane must be cleaned with Carlisle Weathered Membrane Cleaner prior to hot air welding as follows: 1. Apply Weathered Membrane Cleaner to the surface of the membrane which has been exposed using a clean HP Splice Wipe or other white natural fiber (cotton) rag and wipe along the direction of the seam. If natural fiber rags are used, they must be white to prevent fabric dye from discoloring the membrane. Prior to hot air welding, wipe the surface where Weathered Membrane Cleaner has been applied with a clean, dry HP Splice Wipe or other white rag to remove cleaner residue. 2. Weathered Membrane Cleaner will achieve approximately 600 linear feet (one surface) of coverage per gallon for a standard hot air welded splice area. The membrane can typically be repaired up to 6 months to a year with the standard cleaning method referenced above. In cases where the standard cleaning method is not sufficient, additional scrubbing and cleaning will be required. Refer to Paragraph C.1.f.2 below. E. Operating Automatic Hot Air Welding Machine 1. Temperature Settings Cold Applied - 4/

15 a. When making a Sure-Weld splice, no one temperature setting or speed can be used to describe the temperature setting or speed to set the robot. The splice must be tested to determine the quality of the splice. Consult the respective heat welding machine manufacturer for recommendations concerning proper temperature setting and speed control of their equipment. 2. Equipment Set-Up b. Typically, the colder the ambient temperature (and likewise the membrane temperature) the slower the Automatic Hot Air Welding Machine speed control must be adjusted to produce proper seams. As a general guide, Sure-Weld membrane will weld at a lower temperature (1000 F) and faster speed (10 feet to 15 feet per minute) than most other heat welded membrane materials. c. With the Leister Varimat Automatic Welder, the suggested heat setting is 1004 F at 10 to 12.5 feet per minute. With any other brand of robot welder, the temperature should be set at the manufacturer s recommended temperature to obtain the correct splice results. d. The following is a list of items to be checked to determine the temperature setting and the speed at which a splice should be completed: 1) Early morning welder speed settings should be set slower than midday heat welder speeds due to typically colder temperatures in the morning. 2) As the membrane surface temperature increases, the welder speed may also be increased. 3) When the membrane is in direct sunlight, the temperature or robot speed may have to be adjusted when moving into a shaded area, check the splice results. Remember the membrane surface in a shaded area will be cooler than a membrane surface that is in sunlight. 4) Dampness on the membrane from dew, a passing rain shower or misting condition will reduce heat from the splice due to evaporating moisture from the membrane surface. The heat welding temperature (increased) or the robot speed (slower) will have to be adjusted to produce a good splice. Water must be wiped from the welding surface prior to welding the splice. 5) Wind has a cooling affect as it blows over the surface. It will also affect the air flow in the splice reducing the effectiveness of the hot air gun. This will require the operator to increase heat from the hot air gun or reduce the welder speed. 6) Substrates effect the amount of heat required to produce a proper heat welded splice. The robot will have to be adjusted accordingly. Plywood and Concrete act as heat sinks and will take a higher temperature or slower speed setting than insulation. Cool damp substrates will take a higher temperature or slower speed setting than dry substrates. 7) Membrane bleed-out from between sheets will not occur with Sure-Weld membrane if properly welded. If bleed-out is occurring (the dark underside of the membrane begins to melt and flow), increase the welder speed to reduce welding temperature. Equipment set up is the responsibility of the Authorized Applicator. When poor welding is occurring check the following: a. If the membrane is overheated on one side or the other, check the nozzle to be sure it is distributing the heat evenly between the two sheets. b. If the heat is bypassing the edge of the sheet producing a cold weld along the edge of the splice, be sure the nozzle is completely under the sheet and the air dam is in place and functional Cold Applied - 4/

16 c. If the probed splice is tight at the edge but a cold weld is present in the center of the splice (the heat is melting the edges but does not melt the center of the splice), check to be sure the robot is not running too fast. d. Ensure the silicone pressure wheel is intact with no voids in the silicone. If voids are present, incomplete welding will result. e. Be sure all wheels on the air dam are not binding. Binding wheels will cause sheet movement and distortion during the welding process. f. The Automatic Heat Welder nozzle should be adjusted as close to the pressure wheel as possible. If the nozzle is too far away from the pressure wheel, distortion of the membrane may occur due to heat expansion. g. Overheating the membrane will cause poor welds. It is recommended that the automatic welder be run not less than 10 feet a minute on average temperature days. Only on very cold days would the welder be run below this speed. The temperature and welder speeds must be determined based on test welds prior to actual sheet welding. h. Clean screen of dirt and debris on air inlet of heat gun every day. Accumulation of contaminants on screen will reduce air flow and heat output of welder. 2. Membrane Welding a. Prepare the Automatic Hot Air Welding Machine and allow it to warm for approximately 5 to 10 minutes to reach operating temperature. b. Position the Automatic Hot Air Welding Machine properly prior to seaming with the guide handle pointing in the same direction the machine will move along the seam. c. Lift the overlapping membrane sheet and insert the blower nozzle of the Automatic Hot Air Welding Machine between the overlap. Immediately begin moving the machine along the seam to prevent burning the membrane. d. Proceed along the seam ensuring that the small guide wheel in front of the machine aligns with the edge of the top membrane sheet. Guide the machine from the front only. CAUTION: Ensure the power cord has plenty of slack to prevent dragging the machine off course (which could result from a tightly stretched cord). e. At all splice intersections, roll the seam with a silicone roller to ensure a continuous hot air welded seam (the membrane should be creased into any membrane step-off with the edge of the silicone roller). A false weld may result due to surface irregularities created by multiple thicknesses of Sure-Weld membrane sheets. Note: When using Sure-Weld FleeceBACK AFX Plus Membrane, a surface splice of Sure-Weld Non-Reinforced Flashing must be applied over all T joint splice intersections. Refer to Detail SWC-2. f. To remove the Automatic Hot Air Welding Machine from the finished splice, stop the movement of the machine and immediately remove the nozzle from the seam area. Mark the end of the hot air welded seam with a water-soluble marker for easy identification. A Hand Held Welder will be necessary to complete the weld in the area between where the Automatic Hot Air Welding Machine is stopped and restarted. 4. Test Cuts a. Perform a test cut at least at the start of work each morning and afternoon. Test cuts should be taken if any changes in substrate or weather conditions occur. It is recommended that test cuts are performed on a sacrificial piece of membrane to eliminate the need to remove a section from a completed splice Cold Applied - 4/