Gensler 2014/06/16 Hertz Global Headquarters ISSUE FOR BUILDING PERMIT Estero, Florida SECTION

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1 SECTION VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE PART 1 GENERAL 1.1 GENERAL REQUIREMENTS A. The Work of this Section, as shown or specified, shall be in accordance with the requirements of the Contract Documents. B. LEED Requirements: Implement practices and procedures to meet the environmental performance goals for the Project, which include achieving LEED certification. 1. LEED Focus Materials (LFMs) For This Section a. Targeted products containing Volatile Organic Compounds (Targeted VOC Products). 1.2 SECTION INCLUDES A. The Work of this Section includes all labor, materials, equipment, and services necessary to complete the vapor permeable air barrier liquid membrane as shown on the drawings and/or specified herein, including, but not necessarily limited to, the following: 1. Vapor retarder/air barrier applied over sheathing board and cold formed metal framing. 2. Materials and installation to bridge and seal the following air leakage pathways and gaps: a. Connections of the walls to the roof. b. Connections of the walls to the foundations. c. Seismic and expansion joints. d. Openings and penetrations of window frames, storefront, curtain wall. e. Door frames. f. Piping, conduit, duct and similar penetrations. g. Masonry ties, screws, bolts and similar penetrations. h. All other air leakage pathways in the building envelope. 1.3 RELATED SECTIONS A. LEED Reporting - Section B. Construction Waste Management - Section C. Sustainable Design Requirements - Section D. Indoor Air Quality - Section VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

2 E. Volatile Organic Compounds - Section F. Cold formed metal framing, including sheathing - Section SUBMITTALS A. Provide evidence to the Architect of licensing and certification under the Air Barrier Association of America's (ABAA's) Quality Assurance Program. B. Submit shop drawings showing locations and extent of air/vapor barrier and details of all typical conditions, intersections with other envelope systems and materials, membrane counter-flashings, and details showing how gaps in the construction will be bridged, how inside and outside corners are negotiated and how miscellaneous penetrations such as conduits, pipes electric boxes and the like are sealed. C. Submit manufacturer's product data sheets for each type of membrane, including manufacturer's printed instructions for evaluating, preparing, and treating substrate, temperature and other limitations of installation conditions, technical data, and tested physical and performance properties. D. Submit manufacturer's data showing solids content of fluid applied membranes and coverage rates and wet film thickness upon application in order to achieve minimum dry film thickness required by this specification. E. Submit manufacturer's installation instructions. F. Submit certification by air/vapor barrier manufacturer that products supplied comply with local regulations controlling use of volatile organic compounds (VOCs). G. Submit certification of compatibility by air/vapor barrier manufacturer, listing all materials on the project that it connects to or that come in contact with it, including sealant as specified in Section for caulking joints between sheathing panels. H. Submit samples, 3 by 4 inch minimum size, of each air/vapor barrier material required for Project. I. Test results of air permeability testing of primary air barrier material (ASTM E ). J. Test results of assembly in accordance with ASTM E K. LEED Submittals 1. A completed LEED Reporting Form (LRF) with a separate line item completed for each LEED Focus Materials (LFM). 2. Product cut sheets for each LFM confirming that the submitted products are the products installed as part of the Work. 3. Validation: Provide validation for the LFMs according to the Action Submittals requirements of Section "Sustainable Design Requirements." a. Recycled content. VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

3 b. Regional materials. c. VOC content. 1.5 PERFORMANCE REQUIREMENTS A. Provide air/vapor barrier constructed to perform as a continuous air/vapor barrier, and as a liquid water drainage plane flashed to discharge to the exterior any incidental condensation or water penetration. Membrane shall accommodate movements of building materials by providing expansion and control joints as required, with accessory air seal materials at such locations, changes in substrate and perimeter conditions. B. Provide an air barrier assembly that has been tested in accordance with the Air Barrier Association of America's (ABAA's) approved testing protocol to provide air leakage results not to exceed psf. C. Connections to Adjacent Materials: Provide connections to adjacent materials at the following locations and show same on shop drawings: 1. Foundation and walls, including penetrations, ties and anchors. 2. Walls, windows, curtain walls, storefronts, louvers or doors. 3. Different wall assemblies, and fixed openings within those assemblies. 4. Wall and roof connections. 5. Floors over unconditioned space. 6. Walls, floor and roof across construction, control and expansion joints. 7. Walls, floors and roof to utility, pipe and duct penetrations. 8. Seismic and expansion joints. 9. All other leakage pathways in the building envelope. 1.6 QUALITY ASSURANCE A. Installer Qualifications: 1. The air barrier contractor shall be, during the bidding period as well as for the duration of the installation, officially recognized as a Licensed Contractor by the Air Barrier Association of America (ABAA). The contractor shall carry liability insurance and bonding. 2. Each worker who is installing air barriers must be either a Certified Applicator or an installer who is registered with ABAA. 3. Each Lead Certified Applicator can supervise a maximum of five registered installers. The Certified Applicator shall be thoroughly trained and experienced in the installation of air barriers of the types being applied. Lead Certified Applicators shall perform or directly supervise all air/vapor barrier work on the project. VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

4 B. Single-Source Responsibility: Obtain air/vapor barrier materials from a single manufacturer regularly engaged in manufacturing the product. C. Provide products which comply with all state and local regulations controlling use of volatile organic compounds (VOCs). D. Field-Constructed Mock-Ups: Prior to installation of air/vapor barrier, apply air/vapor barrier as follows to verify details under shop drawing submittals and to demonstrate tie-ins with adjoining construction, and other termination conditions, as well as qualities of materials and execution: 1. Construct typical exterior wall panel, 8 feet long by 8 feet wide (one of CMU and one of sheathed areas, incorporating back-up wall, cladding, window and doorframe and sill, insulation, flashing, building corner condition, and typical penetrations and gaps; illustrating materials interface and seals. E. Test mock-up in accordance with ASTM E 783 and ASTM E 1105 for air and water infiltration. F. Manufacturer shall be on-site at least once a week to observe installation and provide written report within 3 days. G. Manufacturer shall confirm all termination details and compatibility with materials being terminated to. H. LEED Quality Assurance: VOC content limitations defined in Section , "Volatile Organic Compound (VOC) Limits For Adhesives, Sealants, Paints, and Coatings." 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver materials to Project site in original packages with seals unbroken, labeled with manufacturer's name, product, date of manufacture, and directions for storage. B. Store materials in their original undamaged packages in a clean, dry, protected location and within temperature range required by air/vapor barrier manufacturer. Protect stored materials from direct sunlight. C. Avoid spillage. Immediately notify Owner, Architect if spillage occurs and start clean up procedures. D. Clean spills and leave area as it was prior to spill. 1.8 WARRANTY A. System Warranty: Provide the manufacturer s three (3) year system warranty, including the primary air/vapor barrier and installed accessory sealant and membrane materials which fail to achieve air tight and watertight seal, exhibit loss of adhesion or cohesion, or do not cure. VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

5 PART 2 PRODUCTS 2.1 MATERIALS A. Liquid Membrane: Henry Air-Bloc 31 Vapour Permeable Liquid Membrane or Tremco ExoAir 220R/SP or ProSoCo Spray Wrap Cat 5 or equal by W.R. Grace or approved equal. Trade names used herein are those of the Henry Co. B. Transition Membrane: Blueskin Breather or Prosoco Fast Flash. C. Primer for Blueskin SA: Blueskin Primer. D. Air Barrier Sealant: Bakor Blueskin Sealant. E. Thermoplastic Rubber Sealant: Bakor Pro-Seal Sealant or Prosoco Joint and Seam filler. F. Substrate Cleaner: Mineral spirits or Xylol. PART 3 EXECUTION 3.1 INSPECTION A. Examine the areas and conditions where the above grade waterproof membrane is to be installed and correct any conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected to permit proper installation of the work. 3.2 SURFACE PREPARATION A. All surfaces must be sound, dry, clean and free of oil, grease, dirt, excess mortar or other contaminants. B. Cracks in masonry and concrete up to 1/4" wide shall be filled with a trowel application of Air-Bloc 31 and allowed to cure overnight prior to application of the liquid membrane to the surface, or alternatively, the cracks may be sealed with a strip of Blueskin membrane applied to the substrate. Cracks wider than 1/4" should be sealed with Blueskin membrane adhered to the substrate lapped a minimum of 3" on both sides of the crack. C. Surfaces should be tied in with beams, columns, window and door frames, etc. using strips of Blueskin Breather lapped a minimum of 3" on both substrates. Mechanical attachment should be made to all window and door frames, or a properly designed sealant joint provided. 3.3 TRANSITION MEMBRANE A. Align and position self-adhering transition membrane, remove protective film and press firmly into place. Ensure minimum 3" overlap at all ends and side laps. B. Tie-in to window frames, metal door frames, etc., and at the interface of dissimilar materials as indicated on the Drawings. VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

6 C. Promptly roll all laps and membrane with a counter top roller to effect seal. D. Ensure all preparatory work is complete prior to applying Air-Bloc THROUGH-WALL FLASHING MEMBRANE A. Align and position the leading edge of Blueskin TWF self-adhering through-wall flashing membrane with the front horizontal edge of the foundation walls or shelf angles, partially remove protective film and roll membrane over surface and up vertically. B. Press firmly into place. Ensure minimum 50mm overlap at all end and side laps. C. Promptly roll all laps and membrane to effect the seal. D. Ensure all preparatory work is complete prior to applying Blueskin TWF. E. Ensure through-wall flashing membrane extends fully to the exterior face of the exterior masonry veneer. Trim off excess as directed by the consultant. F. Apply through-wall flashing membrane along the base of masonry veneer walls, over windows, doors and all other wall openings. Membrane shall form continuous flashing and shall extend up a minimum of 4-1/2" up the back-up wall. G. When flashing at window openings, wrap the entire window opening with air barrier flashing membrane. 3.5 LIQUID MEMBRANE APPLICATION A. Apply Air-Bloc 31 to wall substrates in a continuous coat at manufacturer s recommended rate by spray or trowel to provide a minimum wet film thickness of 0.093". 1. Minimum dry film thickness shall be 0.078". B. Overlap liquid membrane on to transition membrane at connections a minimum of 1". C. Trowel Air-Bloc 31 around ties and other projections to ensure a complete seal. D. Do not leave membrane exposed for any longer than 6 weeks. E. Penetrations: Seal all penetrations with termination mastic liquid membrane, sealant, flashing or other procedures in accordance with manufacturer s instructions. 3.6 PROTECTING AND CLEANING A. Protect air/vapor barrier system from damage during application and remainder of construction period, according to manufacturer's written instructions. B. Clean spillage and soiling from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. C. Protect air/vapor barrier from exposure to the elements as required by the manufacturer. VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE

7 D. Remove any masking materials after installation. Clean any stains on materials that would be exposed in the completed work using procedures as recommended by manufacturer. 1. Schedule work to ensure that the air and vapor barrier system is covered as soon as possible after installation. Protect air and vapor barrier system from damage during subsequent operations. If the air and vapor barrier system cannot be permanently covered within 30 days after installation, apply temporary UV protection such as dark plastic sheet or tarpaulins. 3.7 FIELD TESTING A. Contractor shall hire testing laboratory to confirm that the system has been tested and passed requirements in accordance ASTM E 783 and ASTM E 1105 for air and water infiltration. Submit test results to Architect. END OF SECTION VAPOR PERMEABLE AIR BARRIER LIQUID MEMBRANE