GreenGuard Residential Building Wraps - Manual (Page 2)

BUILDING WRAP INSTALLATION
1. General
GreenGuard® Building Wraps are polyolefin building wraps intended to perform
as water-resistive barriers when installed in accordance with the information
provided in this Guide. They are intended to reduce the risk of air and bulk water
infiltration when installed under exterior coverings such as brick, stucco, clay
tile, etc., and various siding materials like wood, vinyl, fiber cement, etc. Some
building wraps are recognized as air barrier materials having a higher level of
performance and require additional installation steps as indicated in this Guide.
GreenGuard® Building Wraps meet the compliance requirements of all applicable
building codes and industry standards. Go to www.TrustGreenGuard.com for the
most current compliance information.
2. Description
This Guide provides information for installation of GreenGuard® Building Wraps
in residential and light commercial applications in which a water-resistive barrier
and/or air barrier material may be required.
The information provided represents guidelines and is not intended to address
all potential combinations of building materials. GreenGuard
® Building Wraps
are polyolefin products that are designed specifically for the applications in this
Guide.
3. Usage and Limitations
GreenGuard® Building Wraps are intended to perform as water-resistive barriers
(WRB’s) in residential and light commercial construction applications when
installed in accordance with the guidelines provided in this Guide and the
following guidelines:
• GreenGuard® Building Wraps are excellent water-resistive barriers that
help deflect water and wind-driven rain, yet are designed to breathe
to assist trapped moisture vapor to escape, helping walls dry faster.
GreenGuard® Building Wraps are made of synthetic materials that
are generally recognized as not providing a food source for insects,
fungus, mold, or mildew. GreenGuard® Building Wraps should always
be properly installed and stored.
• GreenGuard® Building Wraps shall be installed with the printed side facing the
outdoor environment. Refer to the specific product literature for outdoor
exposure limitations.
• GreenGuard® Building Wraps are not intended to be used as roofing
paper.
• GreenGuard® Building Wraps are not intended to be used as a
vapor retarder.
• WARNING: GreenGuard® Building Wraps will ignite if exposed to fire of
sufficient heat and intensity. Protect building wraps from exposure
to open flame or other ignition sources during shipping, storage,
and installation.
• Buildiing codes require the use of two layers of Grade D building paper over
wood sheathing when a cementitious covering (conventional stucco) is used. As
an alternative, one layer of Grade D building paper can be used in conjunction
with one layer of foam plastic insulation. Check with a local building code
official to verify requirements.
4. General Installation Guidelines
4.A. Building Wrap Installed Over Sheathing (Applies to All
GreenGuard ® Building Wraps)
Note: Alternative installation details may be used if approved in
writing by Pactiv Building Products prior to installation.
1. Install building wrap over structural sheathing board, over insulation
board (see Figures 1 and 2), or directly to framing members.
2. Begin by aligning the bottom edge of the roll with the base of the
wall, approximately 2 feet around a corner, fastening securely to a structural
sheathing, through insulation boards to studs or directly to the studs.
3. Unroll the building wrap with the printed side facing out, wrapping the entire
building, including door and window rough openings. Acceptable fasteners
include: common galvanized roofing nails, plastic cap nails, 1-inch crown
staples and 3/8-inch non-corrosive staples. The following applicable fastener
spacing shall be used:
· In applications in which the building wrap is intended to perform as a water-
resistive barrier only, the fastener spacing shall be 36 inches to 48 inches along
every other stud location.
· In applications in which the building wrap is intended to perform as the primary
air barrier material in the wall assembly, only minimum 1 inch long fasteners
with plastic or metal caps can be uded and the spacing shall be 16 to 18
inches along every other stud location.
· In applications in which the siding or cladding installation will immediately
follow installation of the building wrap, then the building wrap can be installed
using fewer fasteners in order to provide adequate attachment necessary to hold
the building wrap in place. However, environmental conditions must be taken
into consideration so that the building wrap is not damaged by wind or becomes
detached, allowing moisture penetration. The installer assumes responsibility
when fewer fasteners are used.
At the bottom of a wall in which through-wall flashing will be installed, the bottom
12 inches of building wrap may remain unfastened in order to integrate the
through-wall flashing, but must be sealed prior to installation of the siding or
cladding if the building wrap is the primary air barrier material in the wall
assembly.
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B U I L D I N G W R A P A N D F L A S H I N G I N S T A L L A T I O N
1-800-241-4402 www.TrustGreenGuard.com
FIGURE 1: EXTERIOR WALL
CROSS-SECTION
FIGURE 2: EXTERIOR WALL WITH GREEN-
GUARD BUILDING WRAP