Installation Guide

ManualsBrands3M ManualsDoors & Windows4 in. x 75 ft. Tan Slit Liner Window and Door Flashing Tape (Case of 4)

All Weather Flashing Tape

8067

Application Guide January, 2010

Installation Guide

for Windows with

Mounting Flanges

• These guidelines outline how to use 3M™ All Weather Flashing Tape 8067 to flash

a flanged window installed in a wall assembly consisting of housewrap over an

exterior sheathing on a wood frame wall.

• The following installation information is intended to represent a “best practices”

approach and is not intended to address all possible construction scenarios or all

window manufacturers’ installation instructions. Some of the information described

below is similar to that described in ASTM E 2112, Method A1.

• Follow the window manufacturer’s instructions as installation methods may be

a requirement of the window manufacturer’s warranty.

Install the weather

resistive barrier

1. Install the weather resistive barrier (WRB) per the manufacturer’s instruction in

an over-lapping water shedding fashion over the entire wall. Make a modified “I”

cut through the building wrap as shown in Fig. 1A.

Figure 1A: Install and cut the WRB

& 3

cuts

cut

& 6

cuts

6"-9" long

WRB

Summary of content (7 pages)

PAGE 1
3 All Weather Flashing Tape 8067 Application Guide Installation Guide for Windows with Mounting Flanges January, 2010 • These guidelines outline how to use 3M™ All Weather Flashing Tape 8067 to flash a flanged window installed in a wall assembly consisting of housewrap over an exterior sheathing on a wood frame wall.
PAGE 2
Application Guide 3M™ All Weather Flashing Tape 8067 Fold and fasten the WRB 2. Fold and fasten the WRB: Fold the header flap up above the window exposing the sheathing and temporarily tape in place. Fold the side flaps of the WRB into the opening and staple to inside wall. Fold the bottom flap in and trim the WRB on the sill to allow the flashing tape to adhere to the wood as shown in Fig. 2A.
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Application Guide 3M™ All Weather Flashing Tape 8067 Apply sill flashing tape 3. Apply sill flashing tape: NOTE: There are other methods for flashing the sill that require additional materials which are not included in this guide. However, it is good practice to create a slope on the sill that directs water down to the outside of the building. In this case, a sloped sill may be installed directly over the WRB before applying the sill flashing tape.
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Application Guide 3M™ All Weather Flashing Tape 8067 Apply sill flashing tape (continued) B. Cut another piece of 3M™ All Weather Flashing Tape 8067 12" longer than the opening width. This is in order for the tape to extend 6" up each side of the opening. Apply the flashing tape to the inside of the sill as shown in Fig. 3B, so it overhangs 1" into the exterior wall and over the WRB and tape applied in step 1. Cut the 1" overhang at each corner, as shown in Fig 3B.
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Application Guide 3M™ All Weather Flashing Tape 8067 Install the window 4. Install the window, plumb, level and square, in accordance with the window manufacturer’s instructions. Typically, this requires that a bead of sealant be applied to the back side of the window flange prior to installing the window. Note: Do not seal the bottom flange of the window. Attach the window using fasteners specified by the window manufacturer and spaced as directed. Install the jamb flashing tape 5.
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Application Guide 3M™ All Weather Flashing Tape 8067 Install the header flashing tape 6. Install the header flashing tape: Cut a piece of 3M™ All Weather Flashing Tape 8067 a length equivalent to the frame width of the window plus 2 times the width of the flashing tape plus 2 inches. The header flashing tape should overlap and extend beyond the jamb flashing tapes by at least 1 inch on each side as shown in Fig. 6.
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Application Guide All Weather Flashing Tape 8067 Technical Information The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance of a 3M product in a particular application.