Dow Weathermate Straight Flashing Tape 9"x 100' - 363950

$ 93.87

$ 77.50

WEATHERMATE Straight Flashing provides a tear-resistant seal that resists water intrusion around windows and doors. It is part of the complete WEATHERMATE Weather Barrier Solutions lineup from Dow - products designed to enhance the performance of the building envelope.
Properties:
WEATHERMATE Straight Flashing combines a blue high-density polyethylene (HDPE) film facer with a butyl rubber adhesive that forms a strong mechanical and chemical bond to most building materials. A polymeric-coated paper release liner provides a more consistent peel than plain paper liners.
WEATHERMATE Straight Flashing contains no asphalt. The butyl rubber adhesive technology, a key component of this flashing, is considered superior to asphalt adhesives in compatibility with commonly used building envelope caulking materials, insulated and noninsulated sheathing, housewraps and window casing materials.
Installation:
HOUSEWRAP OVER AN EXTERIOR SHEATHING ON A WOOD FRAME WALL
The instructions outlined here describe how to use WEATHERMATE Straight Flashing to flash a flanged window installed on a wall assembly consisting of housewrap over an exterior sheathing on a wood frame wall.
Step 1:
-After installing housewrap over rough window openings, make an inverted "Y" cut in the housewrap at each window.
-Fold housewrap in at jambs and sill, fastening to inside face of framing.
-At the top of each jamb, cut the housewrap 6" at a 45-degree angle. Pull up and temporarily fasten above window opening (Figure 1).
Step 2:
-Install WEATHERMATE Sill Pan according to complete manufacturer installation instructions (Figure 2). Seal overlap seam and top edge of corner pieces with WEATHERMATE Straight Flashing or WEATHERMATE Flexible Flashing. Note: WEATHERMATE Sill Pan works best when the window sill is sloped to the exterior.
-Alternatively, install a backdam and WEATHERMATE Flexible Flashing on the sill. For complete details, refer to the WEATHERMATE Flexible Flashing product/installation information sheet.
Step 3:
-Apply sealant at window jambs and head only. Or back-caulk the window, applying sealant on the back side of the nailing flange (Figure 3). Make sure sealants, housewraps and flashings are chemically compatible.
-Install window, plumb, level and square, per manufacturer instructions. Shims should be placed under WEATHERMATE Sill Pan, if necessary.
-Prepare substrate surface as necessary to ensure it is clean, dry and free of grease, dust or debris.
-A spray adhesive, such as 3M High Strength 90, is recommended if applying WEATHERMATE Flashings directly to OSB or other surfaces where additional adhesion may be required.
Step 4:
-Apply WEATHERMATE Straight Flashing along window jambs, overlapping WEATHERMATE Sill Pan or other sill flashing.
-Install a drip cap, if applicable.
-Next, install WEATHERMATE Straight Flashing along header (Figure 4).
Step 5:
-Fold housewrap flap down and secure with WEATHERMATE Construction Tape (Figure 5).
-Air seal windows around entire interior perimeter with GREAT STUFF Pro Window & Door insulating foam sealant.