Dow WEATHERMATE™ SILL PAN - Manual (Page 2)

d. For window openings wider than
5' (1.5 m), install WEATHERMATE ™
Sill Pan in corners, then cut the
corner off a third piece. Center
this straight length over the two
corner pieces, overlapping each
piece a minimum of 2" (51 mm).
e. Seal overlap seam and top
edge of corner pieces with
WEATHERMATE ™ Flashing.
f. If shims are necessary when
installing the window, place them
underneath WEATHERMATE ™ Sill
Pan.
3. Flash Window
Openings
a. Ensure insulation and wood stud
surfaces are clean, dry and free of
grease, dust or debris.
b. Remove release liner and apply
minimum of 6" (152 mm) wide
WEATHERMATE ™ Straight
Flashing to the window rough
opening, wrapping around
sheathing and frame as shown.
If additional adhesion is needed
to hold fl ashing in place against
wood framing, staples may be
used.
4. Install Window
and Flash Jambs
a. Apply a continuous bead of
sealant to the back side of the
mounting fl ange, along the
header and sides of the
window. For more detailed
instructions, contact your Dow
representative or visit
www.insulateyourhome.com.
b. Install windows plumb, level
and square, according to
manufacturer recommendations.
c. Remove release liner and apply
WEATHERMATE ™ Straight
Flashing along jambs, overlapping
WEATHERMATE ™ Sill Pan or other
sill fl ashing.
5. Flash the Header
RECTANGULAR WINDOWS
a. Install WEATHERMATE ™
Straight Flashing along header,
overlapping and extending past
jamb fl ashings.
Figure 3
Figure 4a
NOTE: WEATHERMATE™ Sill
Pan works best when sloped to
the exterior.
®™Trademark of The Dow Chemical Company (“Dow”) or an affi liated company of Dow
Figure 2e
Figure 4c
b. Tape head fl ashing with 2-7/8"
(73 mm) WEATHERMATE ™
Construction Tape.
Figure 5a-b
WEATHERMATE™
Straight Flashing
WEATHERMATE™
Construction Tape