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	SECTION 07272
	WATER RESISTIVE AND AIR BARRIER ASSEMBLIES
	** NOTE TO SPECIFIER ** Fiberweb; sheathing membrane, air barrier, header wrap. This section is based on the products of Fiberweb, which is located at: 70 Old Hickory Blvd. Old Hickory, TN 37138 Toll Free: 800-321-6271 Phone: 615-847-7000 Fax: 615-847-7068 E-mail: info@typar.com Web: www.typar.com
	The Typar® Weather Protection System is developed and marketed by Fiberweb™, one of the world's largest international non-woven fabrics and product innovation groups. In addition to construction materials, Fiberweb produces a complete range of non-woven products used in a variety of applications including landscaping products, geo textiles, filtration, hygiene, home care, home furnishings, electrical, medical and more.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
		A.	Water resistive and air barrier assemblies.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete sections below not required for project; add others as required.
		A.	Section 06100 - Rough Carpentry: substrate
		B.	Section 06160 - Sheathing: substrate.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from list below not required for project.
		A.	ASTM C 920 - Standard Specification for Elastomeric Joint Sealants.
		B.	ASTM D 779 - Standard Test Method for Water Resistance of Paper, Paperboard, and Other Sheet Materials by the Dry Indicator Method.
		C.	ASTM D 903 - Standard Test Method for Peel or Stripping Strength of Adhesive Bonds.
		D.	ASTM D 1970 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.
		E.	ASTM D 5733 - Standard Test Method for Tearing Strength of Nonwoven Fabrics by the Trapezoid Procedure.
		F.	ASTM E 96 Standard Test Method for Water Vapor Transmission of Materials.
		G.	ASTM E 283 Standard - Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen
		H.	ASTM E 1677 - Standard Specification for an Air Retarder (AR) Material or System for Low-Rise Framed Building Walls.
		I.	ASTM E 2112 - Standard Practice for Installation of Exterior Windows, Doors and Skylights.
		J.	AATCC- 27 Hydrostatic Head Test.
	1.4	SUBMITTALS
	** NOTE TO SPECIFIER ** Delete paragraphs below not required for project.
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be used, including:
			1.	Preparation instructions and recommendations.
			2.	Storage and handling requirements and recommendations.
			3.	Installation and maintenance methods.
		C.	Test Results: Submit copies of test results showing performance characteristics equaling or exceeding those specified.
		D.	Verification Samples: For each finish product specified submit 12 inch (305 mm) square sample for approval by the Architect.
	1.5	QUALITY ASSURANCE
	** NOTE TO SPECIFIER ** Delete paragraphs below not required for project.
		A.	Manufacturer Qualifications: Obtain primary materials from a single manufacturer regularly engaged in manufacturing building wraps. Obtain secondary materials from a source acceptable to the primary materials manufacturer.
		B.	Installer Qualifications: All products listed in this section are to be installed by a single installer with a minimum of two years demonstrated experience in installing products of the same type and scope as specified.
	1.6	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver materials and products in unopened factory labeled packages.
		B.	Store and handle in strict compliance with manufacturer's instructions and recommendations.
		C.	Prevent damage or contamination to materials by construction activities.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: Fiberweb Typar, which is located at: 70 Old Hickory Blvd. ; Old Hickory, TN 37138; Toll Free Tel: 800-321-6271; Tel: 615-847-7000; Email: request info; Web: www.typar.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
		D.	Obtain products from a single manufacturer.
	2.2	MATERIALS
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		A.	Water Resistive and Air Barrier Assembly: Typar® StormWrap™ by Fiberweb™, for use in exterior Wall with the following characteristics:
			1.	Thickness: 21.3 mils (.5 mm) average.
			2.	Breaking Strength Test: 212 lbs (943 N) per ASTM D 5034.
			3.	Pliability: No signs of cracking per AC38, Sec. 3.3.4.
			4.	Ultraviolet Exposure: Not to be installed more than 180 days prior to exterior cladding coverage.
			5.	Accelerated Aging Cycling: No signs of failure at 21 days per AC38.
			6.	Water Resistance Test: Exceeds 24 hours per ASTM D 779.
			7.	Elongation: 0.5 inches (13 mm) mean value per ASTM D 5034, 4 inch (10.2 cm) wide sample.
			8.	Impact Resistance: Impact weight >900 grams (2 lb) per ASTM D1709.
			9.	Meets Florida Building Code and Miami-Dade County Building Code (Miami-Dade County Approved NOA. 07-0322.08; ICC Code Approval #ESR-2431).
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		B.	Water Resistive and Air Barrier Assembly: Typar® MetroWrap™ by Fiberweb™, for use in exterior Wall with the following characteristics:
			1.	Thickness: 12.1 mils (0.31 mm).
			2.	Breaking Strength Test: 94 pounds (418 N) mean value per ASTM D5034.
			3.	Water Vapor Transmission: 10-20 perms (grains per hr.in.Hg.sq.ft.) per ASTM E 96, desiccant method.
			4.	Pliability: No signs of cracking per AC38, Sec. 3.3.4.
			5.	Ultraviolet Exposure: Not to be installed more than 12 months prior to exterior cladding coverage.
			6.	Accelerated Aging Cycling: No signs of failure at 21 days per AC38.
			7.	Water Resistance Test: Exceeds one hour per ASTM D 779.
			8.	Elongation: 1.9 inches (4.8 cm) per ASTM D 5034, 4 inch (10.2 cm) wide sample.
	2.3	ACCESSORIES
	** NOTE TO SPECIFIER ** Manufacturer recommends sealing tape for use over Typar substrate, against Typar logo side coating. Delete the following paragraph if not required for project.
		A.	Sealing Tape:
			1.	Product: Typar® Construction Tape by Fiberweb™.
			2.	Description: Elastomeric polymer based, butyl rubber, rubber based, meeting ASTM C 920 evaluation.
		B.	Mechanical Fasteners:
	** NOTE TO SPECIFIER ** Manufacturer recommends plastic cap mechanical fasteners for use with substrate of wood, insulated sheathing board and exterior gypsum. Delete the following two paragraphs if not required for project.
			1.	Plastic cap nails.
			2.	Plastic cap staples.
	** NOTE TO SPECIFIER ** Manufacturer recommends rust resistant mechanical fasteners with washers for use over steel frame substrate. Delete the following paragraph if not required for project.
			3.	Rust-resistant screws with washers.
	** NOTE TO SPECIFIER ** Manufacturer recommends polyurethane sealant and masonry fasteners with washers for use over masonry substrate. Delete the following paragraph if not required for project.
			4.	Sealant: Polyurethane based, meeting ASTM C 920 evaluation.
			5.	Mechanical: Masonry fastener with washer.
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		C.	Self-Adhering Sheet Flashing: Typar® Flashing Flex by Fiberweb™ with the following characteristics.
			1.	Face Material Composition: Conformable textured polyolefin.
			2.	Face Color: Dark gray.
			3.	Adhesive Composition: Butyl adhesive.
			4.	Thickness: 60 mil.
			5.	Release Liner: Siliconized paper.
			6.	Dimensions: 6 in (15.2 cm) x 75 ft (22.9 m), 9 in (22.7 cm) x 75 ft (22.9 m).
			7.	Low Temperature Flex: Meets or exceeds ASTM D 903.
			8.	Nail Sealability: Meets or exceeds ASTM D 1970.
			9.	Tensile Strength: Meets or exceeds ASTM D 2523.
			10.	Maximum Exposure Limit: 90 days.
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		D.	Self-Adhering Sheet Flashing: Typar® Flashing BA by Fiberweb™ with the following characteristics.
			1.	Face Material Composition: Conformable Textured Polyolefin.
			2.	Face Color: Gray.
			3.	Adhesive Composition: Butyl adhesive.
			4.	Thickness: 25 mil.
			5.	Release Liner: Siliconized paper.
			6.	Dimensions: 4 in (10.2 cm), 6 in (15.2 cm) x 75 ft (22.9 m), 9 in (22.7 cm) x 75 ft (22.9 m).
			7.	Low Temperature Flex: Meets or exceeds ASTM D 903.
			8.	Nail Sealability: Meets or exceeds ASTM D 1970.
			9.	Tensile Strength: Meets or exceeds ASTM D 2523.
			10.	Maximum Exposure Limit: 180 days.
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		E.	Self-Adhering Sheet Flashing: Typar® Flashing RA by Fiberweb™ with the following characteristics.
			1.	Face Material Composition: Polyolefin.
			2.	Face Color: Gray.
			3.	Adhesive Composition: Rubberized asphalt.
			4.	Thickness: 25 mil.
			5.	Release Liner: Siliconized paper.
			6.	Dimensions: 4 in (10.2 cm) x 75 ft (22.9 m), 6 in (15.2 cm) x 75 ft (22.9 m), 9 in (22.7 cm) x 75 ft (22.9 m), 12 in (30.5 cm) x 75 ft (22.9 m).
			7.	Low Temperature Flex: Meets or exceeds ASTM D 903.
			8.	Nail Sealability: Meets or exceeds ASTM D 1970.
			9.	Tensile Strength: Meets or exceeds ASTM D 2523.
			10.	Maximum Exposure Limit: 90 days.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Do not begin installation until substrates have been properly prepared.
		B.	Prior to start of installation, inspect existing conditions to ensure surfaces are suitable for installation of Fiberweb products, including removal of sharp protrusions and that substrate is dry.
		C.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.2	PREPARATION
		A.	Clean surfaces thoroughly prior to installation.
		B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
	3.3	INSTALLATION
	** NOTE TO SPECIFIER ** Delete paragraphs below not required for project.
		A.	Installation of Typar® StormWrap™: Comply with manufacturer's installation instructions including but not limited to the requirements specified in this section. Sequence construction such that Typar® StormWrap™ is not exposed for more than 180 days before covering material is applied.
			1.	Overlaps: Install shingle style to shed water, with minimum 2 inch (5 cm) overlap vertically, 6 inch (15 cm) overlap horizontally, and 12 inch (30 cm) overlap at corners, at all locations where this is possible.
			2.	Fasteners at Wood Studs: Use manufacturer's recommended fasteners with up to 2 inch plastic heads. Use 2 inch (5 cm) long plastic headed nails, plastic cap staple or plastic headed screws when 1/2 inch (12 mm) thick OSB sheathing is used.
			3.	Fasteners at Metal Studs: Use manufacturer's recommended fasteners with up to 2 inch plastic disk around shank of S-12 bugle head stainless steel self-taping screws. Use 2 inch (5 cm) long screws with plastic disk around shank when 1/2 inch (12 mm) thick gypsum board is used.
			4.	Fastening at Concrete Block and Poured Concrete: Adhesive recommended by manufacturer.
			5.	Fastener Pattern: 16 inch (40 cm) vertical fastener spacing for both 16 and 24 inch (40 cm and 61 cm) on center frame stud spacing. Alternatively, furring strips can be used at a spacing of 16 inch (40 cm) for 16 inch stud-spaced frames or 24 inches (600 mm) for 24 inches stud-spaced frames.
			6.	Edge Seal Where Material is Sealed to Itself: Typar® Construction Tape.
			7.	Edge Seal Where Material is Sealed to Adjacent Material: Install Typar® recommended sealant on the substrate 1 inch (2.5 cm) to 2 inches (5 cm) back from the edge of the Typar® StormWrap™. Press building wrap into the sealant to seal to create air and water seal. If required by location of termination, provide furring strip to hold the Typar® StormWrap in place.
			8.	Edge Seal at Penetrations: Install Typar® recommended sealant on the substrate 1 inch (2.5 cm) back from the edge of the cut. Press Typar StormWrap into the sealant to create air and water seal. Install Typar® Flashing Flex, Typar® BA Flashing or Typar® Flashing RA on the exterior of the Typar® StormWrap to join the material to the penetration.
			9.	Final Inspection of Typar® StormWrap™: When each section is complete, the installer shall visually inspect the installation and verify that all rows of material have overlapped the row below it, that all materials and components have been installed in a shingle fashion, that the fasteners are the proper ones, that the nailing pattern is correct, that all penetrations and terminations have been done correctly and that doors and windows have been properly flashed and integrated into the Typar® StormWrap material. The installer shall repair any cuts or tears with Typar® Construction Tape.
	** NOTE TO SPECIFIER ** Delete paragraph below if not required for project.
		B.	Installation of Typar® MetroWrap™: Comply with manufacturer's installation instructions including but not limited to the requirements specified in this section. Sequence construction such that Typar® MetroWrap™ is not exposed for more than 12 months before covering material is applied.
			1.	Overlaps: Install shingle style to shed water, with minimum 2 inch (50 mm) overlap horizontally, 6 inch (15 cm) overlap vertically, and 12 inches (30 cm) overlap at corners, at all locations where this is possible.
			2.	Fasteners at Wood Studs: Use manufacturer's recommended fasteners with plastic heads. Use 2 inch (5 cm) long plastic headed nails or plastic headed screws when 1/2 inch (1.2 cm) thick OSB sheathing is used.
			3.	Fasteners at Metal Studs: Use manufacturer's recommended fasteners with 2 inch (5 cm) plastic disk around shank of No. 10 stainless steel self-taping screws. Use 2 inch (5 cm) long screws when 1/2 inch (1.2 cm) thick gypsum board is used.
			4.	Fastening at Concrete Block and Poured Concrete: Adhesive Recommended by manufacturer.
			5.	Fastener Pattern: Attach one fastener or more every 24 inches (61 cm) in horizontal and vertical direction or at 16 inches (40 cm) in horizontal and 24 in the vertical if using 16 inch stud spacing.
			6.	Edge Seal Where Material is Sealed to Itself: Typar® Construction Tape.
			7.	Edge Seal Where Material is Sealed to Adjacent Material: Install approved sealant on them substrate 1 inch (2.5 cm) to 2 inches (5 cm) back from the edge of the Typar® MetroWrap™. Press MetroWrap into the sealant to create air and water seal. If required by location of termination, provide furring strip to hold the Typar® MetroWrap™ in place.
			8.	Edge Seal at Penetrations: Install approved sealant on the substrate 1 inch (2.5 cm) back from the edge of the cut. Press MetroWrap into the sealant to create air and water seal. Install Typar® Flashing Flex, Typar® Flashing BA or Typar® Flashing RA as specified on the exterior of the Typar® MetroWrap™ to join the material to the penetration.
			9.	Final Inspection of Typar® MetroWrap™: When each section is complete, the installer shall visually inspect the installation and verify that all rows of material have overlapped the row below it, that all materials and components have been installed in a shingle fashion, that the fasteners are the proper ones, that the nailing pattern is correct, that all penetrations and terminations have been done correctly and that doors and windows have been properly flashed and integrated into the MetroWrap material.
			10.	The installer shall repair any cuts or tears with Typar® Construction Tape.
		C.	Install prior to installation of windows in accordance with manufacturer's instructions over exterior sheathing or open studs.
		D.	Air infiltration barrier shall be air tight and free from holes, tears, and punctures.
		E.	All window and door penetrations are to be flashed and sealed per ASTM E 2112, AMMA guidelines and manufacturer instructions.
	3.4	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION