Air Barrier Association of America
1600 Boston-Providence Turnpike
Walpole, MA 02081
Toll Free: (866) 956-5888
Web Site: www.airbarrier.org
Specifier Note: This Specification is written according to the Construction Specifications Institute
(CSI) 3-Part Format, including MasterFormat, SectionFormat, and PageFormat, contained in the CSI
Manual of Practice.
The section must be carefully reviewed and edited by the Architect to meet the requirements of the
project and local building codes. Coordinate this section with other specification sections and the
Delete all "Specifier Notes" when editing this section.
Specifier Note: This section covers housewrap materials that are thin, vapor permeable sheet water-
resistive barriers that are mechanically attached directly to framing members or over exterior
sheathing materials in residential applications. Water-resistive barriers are materials that are
intended to perform as a secondary weather barrier behind an exterior cladding, providing a means to
protect the wall assembly from bulk water that penetrates the exterior cladding. Contact the specific
housewrap manufacturer for assistance in editing this section for the specific application.
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Housewrap materials are water-resistive barriers that perform as secondary weather barriers
installed behind exterior claddings to provide a secondary line of defense to protect the wall
assembly from bulk water that penetrates the exterior cladding. The housewrap is a drainage
plane that assists in the management of bulk water.
B. As a secondary function, housewraps perform as air retarders for low-rise residential applications.
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1.2 RELATED SECTIONS
Specifier Note: Edit the following list of related sections as required for the project. List other
sections with work directly related to this section.
A. Section 07100 - Dampproofing and Waterproofing.
Specifier Note: List standards referenced in this section, complete with designations and titles. This
article does not require compliance with standards, but is merely a listing of those used.
A. AATCC-127 - Water Resistance: Hydrostatic Pressure Test.
B. AC38 – ICC-ES Acceptance Criteria for Water-Resistive Barriers.
C. ASTM D 828 - Standard Test Method for Tensile Strength of Paper and Paperboard.
D. ASTM D 882 - Standard Test Method for Tensile Properties of Thin Plastic Sheeting.
E. ASTM D 1117 - Standard Guide for Evaluating Nonwoven Fabrics.
F. ASTM D 1777 - Standard Test Method for Thickness of Textile Materials.
G. ASTM D 3776 - Standard Test Method for Mass Per Unit Area (Weight) of Fabric.
H. ASTM D 5034 - Standard Test Method for Breaking Strength and Elongation of Textile Fabrics.
I. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
J. ASTM E 96 - Standard Test Method for Water Vapor Transmission of Materials.
K. 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
L. ASTM E 330 - Standard Test Method for Structural Performance of Exterior Windows, Doors,
Skylights and Curtain Walls by Uniform Static Air Pressure Difference.
M. ASTM E 331 - Standard Test Method for Water Penetration of Exterior Windows, Skylights,
Doors and Curtain Walls by Uniform Static Air Pressure Difference.
N. ASTM E 1677 – Standard Specification for an Air Retarder (AR) Material or System for Low-
Rise Framed Building Walls.
O. Canadian Construction Materials Centre – CCMC Technical Guide 07102 for Sheathing,
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A. Comply with Section 01330 - Submittal Procedures.
B. Product Data: Submit manufacturer's product data, including installation instructions.
C. Samples: Submit manufacturer's samples of housewrap material.
D. Manufacturer's Certification: Submit manufacturer's certification that materials comply with
specified requirements and code compliance and are suitable for the intended application.
1.5 QUALITY ASSURANCE
A. Installer Qualifications: Installer experienced in performing work of this section who is
specialized for installation work similar to that required for this project.
Specifier Note: Paragraph below should list obligations for compliance with specific code
requirements particular to this section. General statements to comply with a particular code are
typically addressed in Conditions of the Contract and Division 1 Regulatory Requirements Section.
Repetitive statements should be avoided.
B. Regulatory Requirements: (Specify applicable requirements of regulatory agencies.)
1. Compliance: Provide products that meet the following requirements:
a. ICC-ES Acceptance Criteria for Water-Resistive Barriers (AC38)
b. ASTM E 1677: Standard Specification for an Air Retarder (AR) Material or System for
Low-Rise Framed Building Walls
1.6 DELIVERY, STORAGE, AND HANDLING
A. Delivery: Deliver materials to site in manufacturer's original, unopened containers and
packaging, with labels clearly identifying product name and manufacturer.
B. Storage: Store materials in clean, dry area in accordance with manufacturer's instructions.
C. Handling: Protect materials from damage during handling and installation.
A. Manufacturer’s Warranty: Contact the housewrap manufacturer to obtain warranty information.
PART 2 PRODUCTS
Atlanta Nisseki CLAF, Inc.: www.clafusa.com
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National Shelter Products: www.nationalshelter.com
Owens Corning: www.owenscorning.com
Pactiv Building Products: www.green-guard.com
Valeron Strength Films: www.valeron.com
2.2 PERFORMANCE REQUIREMENTS
Specifier Note: Specify a housewrap that meets the specifications shown below. Add water-resistive
barrier to the housewrap description in exterior wall systems that incorporate structural sheathings
and foam plastic insulating sheathings. Consult the Air Barrier Association of America for additional
information at www.airbarrier.org
A. Water-resistive Barrier Building Code and Industry Compliance Requirements:
1. Description: Housewraps are water-resistive barriers that perform as secondary weather
barriers installed behind exterior claddings to provide a secondary line of defense to
protect the wall assembly from bulk water that penetrates the exterior cladding. The
housewrap is a drainage plane that assists in the management of bulk water.
2. As a secondary function, housewraps perform as air retarders for low-rise framed
B. Material: Housewraps are thin, vapor permeable sheet water-resistive barriers that are
mechanically attached directly to framing members or over exterior sheathing materials in
C. Typical Thickness(s), ASTM D 1777: 0.003 to 0.015 inch (0.08 to 0.38 mm).
D. Typical Weight(s), ASTM D 3776: 7 to 28 lbs./1000 ft2 (34 to 137 g/m2).
E. Water Penetration Resistance (must meet one of the following requirements):
a. ASTM D 779: 10 minute minimum.
b. AATCC-127: 22 inches (55 cm) hydrostatic head for 5 hours.
c. CCMC 07102, Section 6.4.5: 1 inch (25.4 mm) hydrostatic head for 2 hours.
F. Water Vapor Permeance, ASTM E 96, Procedure A: Minimum 5 perms (35 g/m2/ 24
G. Tensile/Breaking Strength (must meet one of the following requirements):
a. ASTM D 828 or ASTM D 882: Minimum 20 pounds per inch (3.6 N/mm).
b. ASTM D 5034: Machine,MD 40 psi (275 kPa)/Cross, CD 35 psi (241 kPa).
H. Surface Burning, ASTM E 84: Flame Spread Maximum of 25 (Class A).
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I. Pliability, ICC-ES AC38, Section 3.3.4: No cracking.
J. Air Retarder Material/System, ASTM E 1677, Type I (the following requirements apply):
a. Rate of Air Leakage, ASTM E 283: 0.06 cfm/ft 2 at 1.57 psf (0.3 L/s/m2).
b. Structural Performance, ASTM E 330: Minimum 1 hour at 65 mph (500 Pa).
c. Water Resistance, ASTM E 331: Minimum 15 Minutes at 0.11 in. (2.8 mm) of water
at 15 mph (27 Pa).
A. Fasteners: Housewraps are typically installed using plastic cap nails, roofing nails, staples and
metal screws with steel plates (for attaching to steel studs).
B. Housewrap Seam Tape: Refer to the housewrap manufacturer’s installation guidelines for
PART 3 EXECUTION
A. Examine areas to receive housewrap. Notify architect of conditions that would adversely affect
installation. Do not proceed with installation until unsatisfactory conditions are corrected.
3.2 MANUFACTURER’S INSTRUCTIONS
A. The applicable housewrap manufacturer’s installation guidelines and applicable ICC-ES
Evaluation Report shall be strictly adhered to and copies of these documents shall be available
at all times on the jobsite during installation. Any deviations from these published documents
must be approved by the housewrap manufacturer prior to installation or any warranty set forth in
Section 1.7 may be void.
Note 1: Do not use housewrap as a roofing paper or as a vapor retarder.
Note 2: Contact the housewrap manufacturer for special installation details, such as window flashing
integration and sealing of penetrations.
A. Install housewrap over structural sheathing board, over non-structural insulative sheathing or
directly to framing members.
B. Begin by aligning the bottom edge of the roll with the base of the wall in a straight and plumb
fashion, providing at least a 12-inch (305 mm) piece of material to secure around corners.
C. Unroll the housewrap with the printed side facing the exterior, wrapping the entire building,
including door and window openings. Position the roll to cover the edge of the sill plate and
overlap the foundation wall at least 2 inches (50 mm). Housewraps can be installed over
structural sheathing, over non-structural sheathings such as foam plastic insulation, or directly to
framing members. When installing housewraps over structural sheathing, the fasteners must
penetrate the sheathing a minimum of ½ inch (13 mm). When installing housewrap directly to
framing members or through non-structural sheathings, fasteners must extend into the
underlying wood framing members a minimum of 1/2 inch (13 mm), The most common
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fasteners for attaching housewraps are roofing nails, plastic cap nails with a 1 inch (25 mm)
diameter cap, common roofing nails or staples with a minimum 1 inch (25 mm) crown. If smaller
crown staples are used, then more fasteners may be needed to adequately attach the
housewrap. When attaching to steel studs, the most common fastener type is a metal screw with
a 1-inch (25 mm) diameter steel plate.
D. Housewraps fasteners are typically spaced 6 -18 inches (152 – 457 mm) apart vertically and
16 – 24 inches (406 – 610 mm) apart horizontally. Refer to the housewrap manufacturer’s
installation guidelines for recommended fastener types and fastening frequency.
E. When the end of a roll is reached, fold the edge of the housewrap under itself and attach to the
structural sheathing or through the non-structural sheathing to the nearest framing member.
Horizontal joints must be overlapped a minimum of 2 inches (50 mm) with upper courses
overlapping lower courses in water-shedding fashion. Vertical seams must be overlapped a
minimum of 6 inches (152 mm). All vertical and horizontal seams can be taped using an
adhesive tape recommended by the housewrap manufacturer. Although taping of housewrap
seams is not required to achieve code compliance, it can provide additional protection against
air and moisture intrusion.
F. Make an inverted “I” cut through the housewrap at window and door openings and wrap excess
material to the inside of the rough opening and fasten securely to a framing member. At the
window header, make a 6 to 8 inch (152 – 203 mm) diagonal cut at the corners of the
housewrap and fold the material up above the rough opening, exposing the underlying
sheathing. This will allow for installation of the head flashing material, which will then be
covered by the housewrap material when it is folded down and the diagonal cuts are taped. If
windows are already in place when installing housewrap, trim as close to them as
possible and tape all edges. Use of window flashing materials is required as described in the
International Residential Code. Check local building codes to determine whether window
flashing is a local requirement.
A. Protect installed housewrap from damage until covered by exterior cladding as described in the
housewrap manufacturer’s installation guidelines.
END OF SECTION
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