Suntree Development Building B and Site Section

Transcription

1 Project No.: 2027 Page 1 of 20 Part 1 General 1.1 WORK INCLUDED.1 Work under this section covers the installation of a new Fully Adhered roofing system over a new roof structure. In addition, contractor shall include all related items of work as noted herein, or indicated on the drawings or otherwise required to complete the specified elements of work and to provide the necessary warranties for this work..2 Contractor will dispose of all materials properly. Any material removal shall comply with provincial and local code requirements and shall be disposed of in a legal manner. 1.2 RELATED SECTIONS.1 Section Metal Fabrications.2 Section Rough Carpentry.3 Section Metal Flashing and Trim.4 Section Sealants 1.3 SUBMITTALS.1 Roofing Contractor to submit a current certificate copy of their insurance carrier..2 Submit samples:.1 Roofing membrane.2 Insulation.3 Fasteners.4 Warranty.3 Submit copies of Technical Information Sheets (TIS) for all products used on this project..4 Shop Drawings: Include plans, sections, and details of the following:.1 Seam splicing, perimeter securement, flashing, base tie-ins, roof edges, expansion joints, penetrations, drains, membrane terminations and any other relevant details..5 Submit samples of walkway pads..6 Submit mechanical fastener data, required spacing, and installation instructions for the specified wind uplift standards.

2 Project No.: 2027 Page 2 of 20.7 Submit shop drawing for tapered insulation including slopes..8 Shop drawings shall show complete layout of the tapered system and shall comply with the drainage patterns required. 1.4 QUALITY ASSURANCE.1 Manufacturer:.1 Company specializing in the manufacturing of the roofing membrane specified in this Section.2 Manufacturer must be able to provide the project with the roofing membrane including the Polyisocyanurate roof board insulation and/or the sheet metal that is produced in their facilities or have written acceptance of compatible materials..2 Applicator:.1 Shall be approved, licensed, or authorized applicator of the membrane manufacturer..2 The Work shall be executed by workmen skilled and trained in the application of the roofing system..3 Shall comply with Alberta Roofing Contractors Association (ARCA) Specification Manual, together with authorized additions and amendments, except where greater requirements are indicated or specified. 1.5 REGULATORY REQUIREMENTS.1 Conform to the applicable local building code requirements. 1.6 QUALITY INSPECTION/OBSERVATION.1 Inspection by Manufacturer: Provide a final inspection of the roofing system by a Technical Representative employed by roofing system manufacturer..2 Owner may engage and pay for an independent roofing inspection company to perform regular inspections. Give at least 2 weeks notice of starting work and allow inspector free access. Inspection may include a Nuclear Moisture Detection or Infrared Thermography or Electric Capacitance survey of completed roof. Roofing contractor shall bear all costs of cut tests or other testing costs required due to failure to notify Inspection Company in sufficient time to allow site inspections during roofing application..3 Any defective materials or workmanship shall be corrected or removed and replaced by the Roofing Contractor at his own expense and he shall be held responsible for the cost of additional work of other trades affected by this replacement.

3 Project No.: 2027 Page 3 of 20. Roofing Contractor shall complete any necessary repairs required for issuance of warranty. 1.7 PRE-INSTALLATION CONFERENCE.1 Before installing roofing system, conduct conference at Project site to discuss the proper installation of materials. Attendees shall include all parties directly affecting work of this Section. Notify participants at least 1 week before conference..2 Meet with Owner; Architect; Owner s insurer, if applicable; testing and inspecting agency representative; roofing Installer; roofing system manufacturer s representative; deck Installer; and installers whose work interfaces with or affects roofing, including installers of roof accessories and roof-mounted equipment..3 Review methods and procedures related to roofing installation, including manufacturer s written instructions..4 Examine deck substrate conditions and finishes for compliance with requirements, including flatness and fastening..5 Review loading limitations of deck during and after roofing..6 Review base flashings, special roofing details, roof drainage, roof penetrations, equipment curbs, and condition of other construction that will affect roofing..7 Review temporary protection requirements for roofing system during and after installation..8 Document proceedings, including corrective measures or actions required, and furnish copy of record to each participant within three (3) working days. 1.8 DELIVERY, STORAGE AND HANDLING.1 Coordinate deliveries to comply with construction schedule and arrange ahead for strategic locations..2 Handle and store roofing materials, and place equipment in a manner to avoid permanent deflection of deck. Do not load any area beyond the design limits..3 Deliver products in manufacturer's original containers, dry, undamaged, seals and labels intact and legible..4 Store all materials clear of ground and moisture with incombustible weather protective covering. Securely tie coverings in such a way as to be weather tight..5 Keep all combustible materials away from all ignition sources..6 Store roof insulation materials from physical damage and from deterioration by

4 Project No.: 2027 Page 4 of 20 sunlight, moisture, soiling, and other sources in weather protected environment. Store in a dry location. Keep dry during application. Outdoors, keep clear of ground and moisture..7 Handle insulation to prevent broken edges and corners, punctures, indentations or other damage. Remove damaged insulation from site..8 Materials found to be damp at time of installation or having been damp or exposed to moisture shall be rejected..9 Store all liquid materials in their original undamaged containers in a clean, dry, protected location and within the temperature range required by roofing system manufacturer..10 Store sealants and liquid materials containing solvents in well ventilated spaces with proper fire and safety precautions. Smoking is prohibited in area of roofing application..11 Protect stored liquid material from direct sunlight..12 Discard and legally dispose of liquid material that cannot be applied within its stated shelf life..13 Protect sheet metal materials against bending, scratching and exposure which will cause corrosion or damage to appearance..14 Do not store materials on, or transport materials across completed roof areas..15 At the end of each day s work, provide temporary seal between finished membrane and roof deck substrate to prevent weather damage and water from entering finished roof assembly. Remove such temporary seal completely prior to commencing with work..16 Provide protection covering out of 19 mm (3/4 ) thick plywood underlaid with 25 mm (1 ) thick polystyrene insulation board adhered to it, over all roofed areas when working from, or over such roof surfaces. Provide such protection below hoist rigs, ladders, pallets of material, and in other circumstances where the roofing membrane is exposed to potential damage. Secure protection boards against wind storm loss..17 Protect work of other trades from damage resulting from work of this Section. Make good such damage at no cost to owner. 1.9 ENVIRONMENTAL REQUIREMENTS.1 Install roofing membrane only when surfaces are clean, dry, smooth and free of snow and ice..2 Do not apply roofing membrane during inclement weather or when ambient conditions will not allow proper application. Proceed with roofing work only when existing and forecasted weather conditions permit roofing to be installed according

5 Project No.: 2027 Page 5 of 20 to manufacturers written instructions and warranty requirements..3 Stop work well before onset of inclement conditions and set in place adequate protection of installed materials. Postpone roofing work each day inclement weather appears imminent..4 Protect holes and reglets from water and ice during freezing weather..5 Provide necessary protection to ensure no damage to Work of this Section. Protect partially completed Work at conclusion of each day..6 Provide protection to all building surfaces during hoisting, or application of roofing materials. Protect all adjacent surfaces in an acceptable manner from damage, marking and soiling during installation of this work. Make good any damage to adjoining surfaces caused by the work of this section..7 Consult with Manufacturer for cold weather application FIRE SAFETY.1 Provide hand-held fire extinguishers, ULC labeled for A, B and C class protection at each area where roofing is in progress and in storage location..2 Minimum size 9 kg. (20 lb.), fully charged and in operable condition..3 The distance to the extinguisher should not exceed 30m (100 feet)..4 All workers should be trained in the proper use of these extinguishers WARRANTY.1 MANUFACTURER S GUARANTY.1 Submit a written 20 year manufacturer s guaranty naming Owner as beneficiary and covering defects and deficiencies and weather tightness of the complete Roofing System including insulation, from date Work is certified as substantially performed..2 Guaranty shall cover material, labour and workmanship and include repair or replacement at manufacturer s expense, to extent required of all work of this Section in event of leaks or other failure if such failure results from defects and deficiencies or membrane and flashings or their installation..3 Include name, address and telephone number of nearest manuafcturere s representative..4 Membrane manufacturer shall state in writing that insulation used is suitable for type of installation provided.

6 Project No.: 2027 Page 6 of 20.2 ARCA EXTENDED WARRANTY.1 Provide an extended warranty stating:.1 That the roofing system has been constructed in accordance with the Contract Documents, and.2 that the Contractor shall, at no additional expense to the Owner, repair any actual leaks or deficiencies in the roofing system, occurring within five years after the date of Substantial Performance of the Work, and which have resulted from faulty or improper workmanship..2 For the purpose of this extended warranty, the roofing system includes the roofing assembly and related sheet metal work..3 Arrange with the manufacturer about one month before extended warranty expires, to visit site, examine work, top off flashing pockets (if any), and make necessary repairs, Should Contractor fail to make such arrangements through no fault of the Owner, then the period of extended warranty shall extend to one month after such arrangement is made..4 Contractor shall obtain, on behalf of the Owner, the ARCA Five Year Certificate of Assurance for the performance of Contractor's obligations under the extended warranty. Owner will not accept other roofing certificates. Part 2 Products 2.1 MANUFACTURERS.1 All materials used in fully adhered EPDM roof system shall be supplied by one manufacturer..2 Basis of Design:.1 Firestone Fully Adhered EPDM and components.2 Alternate Fully Adhered EPDM roof systems will be considered with written request for approval and all components of the system must come from the same manufacturer. 2.2 NAILERS FOR FLANGES AND ROOF ACCESSORIES.1 Description: Structural Grade No. 2 or better Southern Pine, Douglas Fir, or Exterior Grade plywood. All wood shall be pressure treated for rot resistance..2 Nailer width: Minimum 89mm (3 ½ in.) nominal wide or as wide as the nailing flange of each roof accessory..3 Nailer thickness: Thickness of roof insulation.

7 Project No.: 2027 Page 7 of VAPOUR RETARDER.1 Description: Firestone V-Force SA is a vapour retarder comprised of SBS modified bitumen adhesive, factory laminated to a tri-laminate woven, high-density polyethylene top surface..2 Tensile Strength: ASTM D Thickness: ASTM D 51.4 Static Puncture: ASTM D Tear Strength: ASTM D Water Vapour Permeance: e 96 Procedure B.7 Product/Producer: MB Base SA by Firestone. 2.4 THERMAL BARRIER/AUXILLIARY LEVELLING SURFACE.1 Gypsum Sheathing Board: to ASTM C472, ASTM C473, ASTM C518, ASTM C840, ASTM C1177, ASTM E84, water repellent surfacing, minimum 12.7 mm (1/2 ) thick. - DensDeck Roof Board or approved 2.5 TAPERED POLYISOCYANURATE ROOF INSULATION FOR BACKSLOPE AND CRICKETS.1 Description: Factory pre-engineered 2 % slope tapered roof insulation consisting of closed cell zero-odp polyisocyanurate foam core, integrally laminated to a coated glass mat reinforced with a minimum compressive strength of 20 psi..2 The insulation shall be CFC free to CAN/ULC-S704, meeting the requirements of CAN/ULC-S126, CAN/ULC-S107 and conforming to CAN/ULC S770 Standard Test Method for Determination of Long Term Thermal Resistance of Closed Cell Thermal Insulating Foams..3 Product/Producer: Tapered Resista Polyisocyanurate Insulation by Firestone or approved 2.6 POLYISOCYANURATE ROOF INSULATION.1 Insulation shall be provided in the thicknesses and layers indicated on the Drawings to meet R Description:.1 Roof insulation consisting of closed cell zero-odp polyisocyanurate foam core, integrally laminated to a coated glass mat with a minimum compressive strength of 20 psi..2 The insulation shall be CFC free to CAN/ULC-S704-01, meeting the requirements of CAN/ULC-S126, CAN/ULC-S107 and conforming to CAN/ULC S Standard Test Method for Determination of Long Term

8 Project No.: 2027 Page 8 of MEMBRANE MATERIALS Thermal Resistance of Closed Cell Thermal Insulating Foams..1 Single-ply membrane system: Non-Reinforced.060 (1.5mm) elastomeric sheet roofing panels that are fully adhered with bonding adhesive to the insulation board..2 Product/Producer: RubberGard EPDM membrane by Firestone or approved 2.8 ELASTOMERIC SHEET ROOFING AND FLASHING MEMBRANE.1 Description: Non-reinforced, cured, synthetic single-ply membrane composed of Ethylene Propylene Diene Terpolymer (EPDM)..2 Membrane Type:.060 (1.5mm) non-reinforced standard EPDM..3 Product/Producer: RubberGard EPDM membrane by Firestone or approved 2.9 ELASTOMERIC SHEET ROOFING SYSTEM COMPONENTS.1 Elastomeric Uncured Flashing.1 Description: Non-reinforced, self curing, synthetic, single-ply flashing composed of Ethylene Propylene Diene Terpolymer (EPDM) conforming to the following physical properties as indicated by ASTM D standard specification for Non-vulcanized rubber sheet used as roof flashing..2 Nominal Thickness: 1.52mm (.060") inch.3 Reference Standards:.3 Lap Splice Tape:.1 Product/Producer: EPDM FormFlash flashing membrane by Firestone or approved.1 Description: 35 mil EPDM-based, formulated for compatibility with EPDM membrane and high-solids primer..2 Product/Producer: QuickSeam Splice Tape by Firestone or approved.4 Adhesive Primer:.1 Description: High-solids, butyl based primer formulated for compatibility with EPDM membrane & tape adhesive..2 Product/Producer: QuickPrim Plus by Firestone or approved

9 Project No.: 2027 Page 9 of 20.5 Batten Covers:.1 Description: Cured 60 mil EPDM membrane laminated to 35 mil EPDM tape adhesive..2 Product/Producer: QuickSeam Batten Cover by Firestone or approved.6 Splice Adhesive:.1 Description: Butyl-based, formulated for compatibility with EPDM membrane..2 Product/Producer: RubberGard Splice Adhesive by Firestone or approved.7 Bonding Adhesive:.1 Description: Neoprene-based, formulated for compatibility with EPDM membrane & a wide variety of substrate materials, including masonry, wood, and insulation facings..2 Product/Producer: RubberGard Bonding Adhesive by Firestone or approved.8 2" Metal Seam (RPF) Plates.1 Description: Steel with a Galvalume coating..2 Reference Standard: Corrosion-resistant to meet FM-4470 criteria..3 Product/Producer: 2" Metal Seam Plates by Firestone or approved.9 QuickSeam Roof Walkway Pads.1 Description: EPDM Walkway Pads, 7.62 mm x 760 mm x 760 mm (0.30" x 30" x 30") with EPDM tape adhesive strips laminated to the bottom..2 Product/Producer: QuickSeam Walkway Pads by Firestone or approved.10 Pipe Flashing.1 Description: Pipe Flashing consisting of.060 molded EPDM with EPDM tape adhesive laminated to the bottom..2 Product/Producer: QuickSeam Pipe Flashing by Firestone or approved.11 Metal Batten Strips.1 Description: Steel with a Galvalume coating..2 Reference Standard: Corrosion-resistant to meet FM-4470 criteria.

10 Project No.: 2027 Page 10 of 20.3 Product/Producer: Metal Batten Strip by Firestone or approved.12 Coiled Metal Batten Strips.1 Description: Steel with a Galvalume coating.2 Reference Standard: Corrosion-resistant to meet FM-4470 criteria.3 Product/Producer: Coiled Metal Batten Strip by Firestone or approved.13 Polymer Batten Strips.1 Description: Corrosion-free polymer material.2 Product/Producer: Polymer Batten Strip by Firestone or approved.14 QuickSeam Reinforced Perimeter Fastening Strip (RPF).1 Description: 75 mm (3 inch) wide QuickSeam Tape factory laminated to 150 mm (6 inch) wide reinforced EPDM.2 Product/Producer: QuickSeam Reinforced Perimeter Fastening Strip by Firestone or approved.15 Penetration Pocket.1 Description: Penetration Pocket consisting of.060 molded EPDM flashing with EPDM tape adhesive laminated to the bottom, accommodating up to a 90mm (3-1/2 inch) diameter penetration or penetration cluster..2 Product/Producer: QS6 Penetration Pocket by Firestone or approved.16 Pourable Sealer.1 Description: 2-Part urethane, 2-color for reliable mixing.2 Product/Producer: Pourable Sealer by Firestone or approved.17 Insulation Plates.1 Description: Steel with a Galvalume coating.2 Reference Standard: Corrosion-resistant to meet FM-4470 criteria.3 Product/Producer: Insulation Plates by Firestone or approved.18 Termination Bar.1 Description: 33 mm x 2.54 mm (1.3" X 0.10") thick aluminum bar with integral caulk ledge

11 Project No.: 2027 Page 11 of 20.2 Product/Producer: Termination Bar by Firestone or approved.19 Fasteners.1 Description: Fasteners are used in roofing applications for the attachment of roofing insulation (in combination with Insulation Plates), attachment of QuickSeam RPF (in accordance with Manufacturer Specifications), attachment of Batten Strips, Seam Plates, V Plates, Termination Bars, and other accessories into an acceptable substrate where allowed by specifications..2 Standard duty threaded fastener with fluorocarbon polymer coating and drill point tip capable of penetrating 20 gauge steel. Length shall be sufficient to penetrate deck a minimum of 3/4" for steel and 1" for wood.3 Reference Standard: SAE 1022, Heat Treated.4 Product/Producer: All Purpose (AP) fasteners by Firestone or approved 2.10 METAL FLASHING.1 Edge Metal and/or Coping.1 Description: Provide new 24 gauge steel flashing with Kynar 500 finish to ASTM A653 / A653M Colour to be approved by specifier from manufacturer s standard colour range..3 Product/Producer: Una-Clad metal by Firestone or approved Part 3 Execution 3.1 EXAMINATION.1 Examine roof deck to determine that it is sufficiently rigid to support roofers and their mechanical equipment and that deflection will not strain or rupture roof components or deform deck..2 Verify with Installer present, that surfaces and site conditions are ready to receive work. Correct defects in the substrate before commencing with roofing work..3 Verify that roof openings and penetrations are in place and set and braced and that roof drains are properly clamped into position..4 Verify that wood nailers are in place and secured and match thickness of insulation required..5 Examine roof substrate to verify that it is properly sloped to drains..6 Do not proceed with installation until unsatisfactory conditions have been

12 Project No.: 2027 Page 12 of 20 corrected..7 Start work with sealants and adhesives at temperature recommended by manufacturer..8 Fumes from adhesive solvents may be drawn into the building during installation through rooftop intakes. Appropriate measures must be taken to assure that fumes from adhesive solvents are not drawn into the building through air intakes..9 Thoroughly clean all surfaces which are to receive the roofing and flashings by whatever means necessary to remove laitance, rust, ponded water, dew, frost, snow, ice, water, oil, grease and any other substances which may damage the membrane. Remove any sharp edges, fins and properly repair any roughened surfaces which could cause damage..10 Clean substrate of dust, loose dirt, debris, and other substances detrimental to roofing installation according to roofing system manufacturer s written instructions. Remove sharp projections..11 All surface voids of the immediate substrate greater than 1/4" wide must be properly filled with an acceptable insulation or suitable fill material..12 Temporarily block roof drains to prevent materials from entering and clogging roof drains and conductors and from spilling or migrating onto surfaces of other construction. Remove roof drain plugs when no work is taking place or when rain is forecast..13 Layout the RubberGard (or approved alternate) Fully Adhered System in a fashion so that field and flashing splices are installed to shed water..14 Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of the roofing system at the end of the workday or when rain is forecast. Remove and discard temporary seals before beginning work on adjoining roofing. 3.2 PROTECTION.1 Protect metal, glass, plastic, and painted surfaces from adhesives and sealants..2 Protect neighbouring work, property, cars, and persons from spills and overspray from adhesives, sealants and coatings and from damage related to roofing work..3 Protect finished areas of the roofing system from roofing related work traffic and traffic by other trades. When remaining construction will not affect or endanger roofing, inspect roofing for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner..4 Provide 19 mm (¾") thick plywood under laid with 25 mm (1") thick polystyrene insulation board adhered to same, over roofed areas when working from, or over, such roof surfaces. Provide such protection below hoist rigs, ladders, pallets of material, for runways and in other circumstances where the roofing membrane is exposed to potential damage.

13 Project No.: 2027 Page 13 of WOOD NAILER LOCATION AND INSTALLATION.1 Total wood nailer height shall match the total thickness of insulation being used and shall be installed with a 3 mm (1/8") gap between each length and at each change of direction..2 Wood nailers shall be firmly fastened to the deck. Mechanically fasten wood nailers to resist a force of 200 lbs. per lineal foot. 3.4 THERMAL BARRIER/AUXILLIARY LEVELLING SURFACE.1 Mechanically attach 13mm (1/2") DensDeck Prime thermal barrier to top flanges of steel deck (per manufacturer s recommendations)..2 Install only as much thermal barrier that can be covered by the vapour retarder at the end of each day..3 Install thermal barrier in parallel courses with long dimension of roof insulation at right angles to flutes in steel roof deck with end joints staggered between rows..4 Boards shall be centered on and supported by ribs of metal deck in both directions. 3.5 VAPOUR RETARDER PRIMER APPLICATION.1 Substrate should be clean, dry and free from dust, dirt, oil and grease..2 Apply per manufacturer s written instructions..3 Ensure that primer does not collect in pools on the surface of the substrate..4 Primed surfaces not covered by membrane during the working day must be reprimed. 3.6 VAPOUR RETARDER.1 Install vapour retarder as shown on drawings and as per manufacturer s requirements and as specified by the project designer..2 Continue roof vapour retarder under roof curbs and extend up parapets to seal to wall membranes as detailed..3 Apply membrane complete and continuous to prepared and primed substrate in an overlapping shingle fashion and in accordance with manufacturer s recommendations and written instructions..4 Stagger all vertical joints..5 Unroll and align vapour barrier centered at edge or low point of roof..6 Align and position membrane, remove protective film and press firmly into place.

14 Project No.: 2027 Page 14 of 20.7 Ensure minimum 50 mm overlap at all end and side laps..8 Promptly roll all laps and membrane with a counter top roller to effect the seal..9 Seal all punctures and penetrations with liquid air vapour barrier mastic prior to installing insulating materials..10 Extend vapour retarder at parapets as detailed to tie-into wall air/vapour barrier membrane system..11 Vapour retarder to extend under insulated raised curb details and connect to system..12 Where insulation terminates at curb or parapet details extend air/vapour barrier up vertical surfaces. 3.7 ROOF INSULATION APPLICATION: GENERAL.1 Ensure that vapour retarder is free from damage prior to application of insulation. Repair as necessary..2 Install only as much insulation as can be covered with the completed roofing system before the end of the day s work or before the onset of inclement weather..3 End joints of each course shall be staggered with adjoining..4 Lay roof insulation over thermal barrier/auxiliary levelling surface with end joints of each course staggered with adjoining courses..5 Neatly fit insulation to all penetrations, projections, and nailers. Insulation shall be fit tightly, with gaps not greater than 6 mm (1/4"). All gaps greater that 6 mm (1/4") shall be filled with acceptable insulation. Under no circumstances shall the roofing membrane be left unsupported over a space greater than 6 mm (1/4"). Tapered insulation shall be installed around roof drains for a distance of 300mm (24") from the centre of the drain so as to provide positive drainage. Miter roof insulation edges at ridge, valley and other similar non-planar conditions..6 When installing multiple layers of insulation, all joints between layers shall be staggered at least 6 in..7 Base Layer Attachment: Tapered back slope and crickets..1 Sloped Insulation installed on this project will be loose laid..8 Top Layer Attachment:.1 Insulation installed on this project will be mechanically attached using fasteners and insulation plates. Engage fastener through insulation into deck at the depth and rate specified by the manufacturer.

15 Project No.: 2027 Page 15 of MEMBRANE APPLICATION.1 Beginning at the low point of the roof, place the EPDM membrane without stretching over the acceptable substrate and allow to relax a minimum of 30 minutes before attachment or splicing. As ambient air temperatures decrease, the relax time will increase..2 Layout the Fully Adhered System in a fashion so that field and flashing splices are installed to shed water..3 After making sure the sheet is placed in its final position, fold it back evenly onto itself so as to expose the underside..4 Sweep the mating surface of the membrane with a stiff broom to remove excess dusting agent (if any) or other contaminants from the mating surface..5 Apply Bonding Adhesive at about the same time to both the exposed underside of the sheet and the substrate to which it will be adhered so as to allow approximately the same drying time. Apply Bonding Adhesive so to provide an even and uniform film thickness. Do not apply bonding adhesive to areas that will be subsequently spliced..6 Allow Bonding Adhesive to flash off until tacky. Touch the Bonding Adhesive surface with a clean, dry finger to be certain that the adhesive does not stick or string. As you are touching the adhesive, pushing straight down to check for stringing, also push forward on the adhesive at an angle to ensure that the adhesive is ready throughout its thickness. If either motion exposes wet or stringy adhesive when the finger is lifted, then it is not ready for mating..7 Starting at the fold, roll the previously coated portion of the sheet into the coated substrate slowly and evenly so as to minimize wrinkles..8 Compress the bonded half of the sheet to the substrate with a stiff push broom..9 Fold the un-adhered half of the membrane sheet back onto itself, and repeat the bonding procedure to complete the bonding of the sheet MEMBRANE LAP SPLICING.1 Lap splice areas that have been contaminated must be cleaned as required by Manufacturer Specifications and Details..2 Once the membrane is in place, mark the bottom sheet 13 mm (1/2") to 19 mm (3/4") from the edge of the top sheet every 1.2 m (4') to 1.8 m (6'). Tack the sheet back with Primer per manufacturer s written instructions..3 Remove excess amounts of dusting agent on the sheet and at factory splices using a stiff push broom. Stir Primer thoroughly before and during use. Apply the Primer per manufacturer s written instructions..4 Install splicing per Manufacturer s written instructions.

16 Project No.: 2027 Page 16 of MEMBRANE SECUREMENT.1 Secure membrane at all locations where the membrane terminates or goes through an angle change greater than 50 mm (2") in 300 mm (12") except for round pipe penetrations less than 450 mm (18") in diameter and square penetrations less than 100 mm (4") square..2 Mechanically fasten Reinforced Perimeter Fastening Strips per Manufacturer s recommendations FLASHING PENENTRATIONS.1 General:.1 Flash all penetrations passing through the membrane per Manufacturer Details..2 The flashing seal must be made directly to the penetration (except as shown in details with metal sleeves).2 Pipes, Round Supports, etc.1 Flash with Pre-Molded EPDM Pipe Flashings where practical..2 Flash using FormFlash when Pre-Molded EPDM Pipe Flashing is not practical..3 Structural Steel Tubing.1 Use a field fabricated pipe flashing detail provided that the minimum corner radius is greater than 6 mm (1/4") and the longest side of the tube does not exceed 300 mm (12"). When the tube exceeds 300 mm (12") use a standard curb detail..4 Roof Drains.1 Provide a clean even finish on the mating surfaces between the clamping ring and the drain bowl..2 Taper insulation around the drain to provide a smooth transition from the roof surface to the drain. Use pre-manufactured tapered insulation with facer or suitable bonding surface to achieve slope. Slope shall not exceed Manufacturer recommendations..3 Position the membrane, then cut a hole for the roof drain to allow 13 mm to 19 mm (1/2" -3/4") of membrane extending inside the clamping ring past the drain bolts..4 Make round holes in the membrane to align with clamping bolts. Do not cut the membrane back to the bolt holes..5 Place Water Block Seal on top of drain bowl where the clamping ring seats below the membrane.

17 Project No.: 2027 Page 17 of 20.6 Install the roof drain clamping ring and clamping bolts. Tighten the clamping bolts to achieve constant compression..7 Temporarily block all drains during the application of materials which might block the drains. Take care to remove blocking, when work is not in progress to prevent flooding..5 Pipe Clusters and Unusual Shaped Penetrations.1 Fabricate penetration pockets to allow a minimum clearance of 1" between the penetration and all sides..2 Secure penetration pockets per Manufacturer Details..3 Fill penetration pockets with Pourable Sealer, so as to shed water. Pourable Sealer shall be a minimum of 50 mm (2") deep..6 Hot Pipes.1 Protect the rubber components from direct contact with steam or heat sources when the in-service temperature is in excess of 82 C (180 F). In all such cases flash to an intermediate insulated "cool" sleeve per Firestone details..7 Flexible Penetrations.1 Provide a weather tight gooseneck set in Water Block Seal and secured to the deck..2 Flash in accordance with Manufacturer Details..8 Scuppers.1 Set welded watertight scupper in Water Block Seal and secure to the structure..2 Flash in accordance with Firestone Details..9 Expansion Joints.1 Install as shown on roof drawings in accordance with Manufacturer details FLASHING WALLS, PARAPETS, MECHANICAL EQUIPMENT CURBS, SKYLIGHTS, etc.1 Using the longest pieces practical, flash all walls, parapets, curbs, etc., a minimum of 200 mm (8") high per Manufacturer Details..2 Evaluate the substrate and overlay per Manufacturer specifications as necessary..3 Complete the splice between flashing and the main roof sheet before adhering

18 Project No.: 2027 Page 18 of 20 flashing to the vertical surface. Provide lap splices in accordance with Manufacturer Details..4 Apply Bonding Adhesive at about the same time to both the flashing and the surface to which it is being bonded so as to allow approximately the same flash off time. Apply Bonding Adhesive in a uniform coating..5 Allow Bonding Adhesive to flash off until tacky. Touch the Bonding Adhesive surface with a clean, dry finger to be certain that the adhesive does not stick or string. While touching the adhesive, pushing straight down to check for stringing, also push forward on the adhesive at an angle to ensure that the adhesive is ready throughout its thickness. If either motion exposes wet or stringy adhesive when the finger is lifted, then it is not ready for mating. Flash off time will vary depending on ambient air conditions..6 Roll the flashing into the adhesive evenly and carefully so as to minimize wrinkles. After rolling FormFlash, peel off the release sheet and discard. FormFlash must be contoured to fit the substrate to which it is bonded to minimize bridging or gapping. Use a silicone or silicone sleeved steel roller for rolling in FormFlash..7 Ensure proper contact of flashing by brooming in place..8 Provide termination directly to the vertical substrate as shown in Manufacturer Details..9 Install T-Joint covers at field and flashing splice intersections as required by Manufacturer..10 Install intermediate flashing attachment as required by Manufacturer Specifications and Details FLASHING GRAVEL STOPS OR ROOF EDGE METALS.1 Apply Primer to the metal edging and membrane as described in Manufacturer Specifications.2 Place the roll of 127 mm (5 ) Flashing on the roof a few feet ahead of the application starting point, positioned so that it unrolls from the top of the roll. Remove approximately 0.5 m 1 m (2'-3') of release paper and apply to the metal flange and membrane. Lap adjacent rolls of Flashing a minimum of 25 mm (1 )..3 With a 50 mm 75 mm (2" - 3") wide silicone or silicone sleeved steel hand roller, roll the Flashing ensure proper adhesion. Additional attention must be given to factory splice intersections and to any change in plane..4 Apply 150 mm (6") length of Flashing, a Joint Cover, or 150 mm x 150 mm (6"x 6") FormFlash to the inside edge of the Flashing at all overlaps..5 Apply 150 mm (6") length of Flashing, a Joint Cover, or 150 mm x 150 mm (6"x 6") FormFlash at all intersections between the Flashing and field fabricated splices..6 Where Flashing will not completely cover the metal flange, an additional piece of Flashing must be applied to the metal edge laps. Apply Seam Edge Treatment at

19 Project No.: 2027 Page 19 of 20 the intersections of the flashing sections..7 If the roof edge includes a gravel stop and sealant is not applied between the laps in the metal edging, an additional piece of Flashing shall be applied over the metal lap to the top of the gravel stop, after the initial application of Flashing. SeamEdge Treatment shall be applied at the intersections of the two flashing sections..8 When the roof slope is greater than 1 in 12, apply Seam Edge Treatment along the back edge of the Flashing FLASHING GRAVEL STOPS OR ROOF EDGE METALS.1 Flash all gravel stops or roof edges using as outlined in Manufacturer Details TEMPORARY CLOSURE.1 Temporary closures, which ensure that moisture does not damage any completed section of the new roofing system, are the responsibility of the applicator. Completion of flashings, terminations, and temporary closures shall be completed as required to provide a watertight condition ROOF WALKWAYS.1 Install walkways at all access points to the roof and around all rooftop equipment that may require maintenance and as shown on roof drawings..2 Layout Walkway Pads so that the flat surface is over the completed membrane, spacing each pad a minimum of 25 mm (1") and a maximum of 75 mm (3") from each other to allow for drainage..3 If the installation of Walkway Pads over field fabricated splices or within 150 mm (6") of a splice edge cannot be avoided, flash in the splice using Flashing prior to installing the walkway pad. The Flashing shall extend beyond the walkway pad a minimum of 6" on either side..4 Remove the release paper. Turn the walkway pad over and place it in the Primer..5 Walk on the pad to press in place assuring proper adhesion SHEET METAL WORK.1 Install sheet metal flashing as shown on roof drawings in accordance with Manufacturer details.2 Colour to be approved by customer SPLASH PADS.1 Install concrete splash pads below scuppers to ensure positive drainage away from walls and to prevent erosion of roofing system.

20 Project No.: 2027 Page 20 of FIELD QUALITY CONTROL.1 Field inspection and testing will be performed as required by the manufacturer..2 Correct identified defects or irregularities. Remove roofing that does not comply with requirements, repair substrates, reinstall roofing, and repair sheet flashings to a condition free of damage and deterioration at the time of Substantial completion and according to warranty requirements..3 Final Roof Inspection: Arrange for roofing system manufacturer s technical personnel to inspect roofing installation on completion and submit report to Architect. Notify Architect of Owner 48 hours in advance of the date and time of inspection CLEAN-UP.1 Clean all contaminants from building and surrounding areas..2 Remove trash, debris and equipment from project site and surrounding areas..3 Repair or replace damaged building components or surrounding areas to the satisfaction of the building owner. END OF SECTION