DuPont Flashing Systems Installation Guidelines ™ Helping you get the job done right Integral Flanged Door after water-resistive barrier (wrb) is installed Version 2
Table of Contents Applicable Products...................................................................................................................................................................2 Required Materials....................................................................................................................................................................2 Optional Materials............................................................................................................
DuPont Recommended Low Expansion Foams* Manufacturer Product Name Tytan™ Window & Door Pro Selena Todol E-Z Flo * Apply per manufacturers’ guidelines. DuPont assumes no liability in use of recommended products; installers need to evaluate suitability of recommended products in their end-use applications.
DuPont ™ Flashing Systems Installation Guidelines Integral Flanged Door AFTER Water-Resistive Barrier (WRB) is Installed Method applies to following products: • DuPont™ StraightFlash™ • DuPont™ FlexWrap™ Step 1 Prepare WRB for door installation: A. Make an “I-Cut” (Standard I-Cut) in the WRB (modified I-Cut is also accepted). For an “I-Cut”, begin with a horizontal cut across the bottom and the top of the door frame. From the center, cut straight down to the sill. B.
Step 2 Preparation of sill flashing: A. Cut DuPont™ FlexWrap™ at least 12” longer than width of the sill (S). B. DuPont™ FlexWrap™ has perforated release paper to help with the formation of the back dam. To ensure that the perforation tears cleanly, fold the perforation 180° and crease the flashing. C. Remove the two widest pieces of release paper leaving the narrowest release paper on the flashing. When the finished floor is applied, the release paper can be removed and the back dam can be completed.
DuPont ™ Flashing Systems Installation Guidelines Step 3 A. Install the sill flashing as indicated leaving the 1” of DuPont™ FlexWrap™ with release paper extending it past the door threshold on the inside. When the 1” of release paper is removed, there should be 3/4” of flashing to form the back dam. Optional: Some flooring cannot accomodate a back dam. In that case, fold the 1” back dam on top of DuPont™ FlexWrap™ in the sill. Door will be installed on top of the 1” fold to create a back dam.
Step 5 A. SECURE EDGES OF DUPONT™ FLEXWRAP™ WITH DUPONT RECOMMENDED FASTENERS along the bottom outer edge of the DuPont™ FlexWrap™ at fanned corners. Step 6 A. Apply continuous bead of DuPont™ Weatherization Sealant at the window head and jambs to wall or back side of window mounting flange. DO NOT APPLY A CONTINUOUS BEAD OF SEALANT ACROSS BOTTOM SILL FLANGE to allow for drainage. 4” DuPont™ StraightFlash™ Step 7 (Optional) For extreme weather conditions, see General Instructions. Butyl Adhesive A.
DuPont ™ Flashing Systems Installation Guidelines Step 8 A. Install door according to manufacturer’s instructions. B. (Optional)–see General Instructions. Adhere high pressure skirt to the bottom threshold of the door. C. Cut two pieces of DuPont™ StraightFlash™ or DuPont™ FlexWrap™ for jamb flashing extending 1” above door head flange and below bottom edge of sill flashing. Remove release paper and press tightly along sides of door frame. D.
Step 9 A. Flip down upper flap of WRB so it lays flat across head flashing. B. Tape down diagonal seams of WRB. C. Tape edge of DuPont™ Tyvek® to edge of door at jambs. At the head, continuous tape seams as shown with DuPont™ Tyvek® Tape; if an air barrier is not required or if additional drainage is desired, then skip-tape at the head. DO NOT TAPE at bottom of door. A B C Step 10 Final Step A.
Technical Specifications Note DuPont™ Tyvek® WRBs used in construction products is made from 100% flash spunbonded high density polyethylene fibers which have been bonded together by heat and pressure, without binders or fillers, into a tough, durable sheet structure. Additives have been incorporated into the polyethylene to provide ultraviolet light resistance. DuPont requires that DuPont™ Tyvek® WRBs be covered within four months (120 days) of installation.
