GreenGuard DC14 Drainage Mat - Manual (Page 4)

G R E E N G U A R D ® D C 1 4 I N S T A L L A T I O N G U I D E F O R C O M M E R C I A L A N D R E S I D E N T I A L C O N S T R U C T I O N
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Figure 6a:
Installation of Sill Screed
Figure 6b: Modified “I” Cut at Window
5.0
5.1 GreenGuard ® Butyl Flashing, GreenGuard ®
Flashing and GreenGuard ® SuperStretch™
Flashing
Flashing membranes are designed for sealing around window and
door rough openings and other exterior wall penetrations. The
GreenGuard ® Flashings are rubber-modified asphalt membranes
and GreenGuard ® Butyl Flashing and GreenGuard ® SuperStretch
have a butyl adhesive that enhances their ability to provide a seal
against water intrusion when installed around window and door
openings, roof/wall intersections, deck/porch attachments to
walls, pipe penetrations and other areas that require a waterproof
seal. GreenGuard ® Flashing is designed for sealing at straight
openings, while GreenGuard ® SuperStretch is a flexible flashing
membrane designed for sealing around curved openings.
5.2 GreenGuard ® Custom Contractor Tape
Adhesive tape that is used to seal joints/seams and for
repairs of building wrap products.
6.0
GreenGuard ® DC14 Drainage Mat is used as part of a moisture
drainage system that incorporates the use of a thin sheet
water-resistive barrier (WRB)/building wrap installed prior to the
installation of the drainage mat. Additional details can be found in
the GreenGuard ® Residential and Commercial Installation Guides
(go to www.TrustGreenGuard.com). The following guidelines should
be used when installing GreenGuard ® Building Wraps prior to the
installation of the drainage mat:
6.1 Install building wrap over structural sheathing board, over
insulation board, over exterior gypsum board or directly to framing
members. Prior to the installation of the building wrap, a metal
or plastic sill screed may be installed as shown in Figure 6a
(optional).
6.2 Begin by aligning the bottom edge of the roll with the base of
the wall, approximately 2 feet from a corner, folding several inches
of the material under itself and fastening securely to a stud or
structural sheathing. The building wrap should overlap through-
wall flashing by a minimum of 6 inches. If no through-wall flashing
is being used, then the bottom edge of the building wrap should
overlap the sill plate at least 2 inches.
6.3 Unroll the building wrap with the printed side out, wrapping
the entire building, including window and door rough openings. For
residential applications, staples, galvanized roofing nails or plastic
cap nails may be used for attachment to structural sheathing or
directly to studs. For attachment to metal studs, use corrosion-
resistant screws. When covering non-structural sheathing such as
foam plastic insulation boards, fasteners should penetrate the stud
a minimum of one-half inch. Fasteners should be spaced every
sixteen inches along every other stud location.
6.4 For best results, cut a modified “I” through the building wrap
at window openings (see Figure 6b). Fold excess material inside
the opening and fasten securely through all layers to a stud. If
doors and windows are already in place when installing building
wrap, trim as close to them as possible and tape edges.
FLASHINGS AND JOINT/SEAM SEALING
PRODUCTS
INSTALLATION OF WATER-RESISTIVE
BARRIER/GREENGUARD ® BUILDING WRAPS