5
SEALING THE WINDOW TO THE EXTERIOR WALL CLADDING
When applying siding, brick veneer or other exterior finish material, leave adequate space
between the window frame and the material for sealant. Refer to the illustration that
corresponds to your finish material.
Note: The sealant details shown are standard recommendations from the sealant industry.
Contact your sealant supplier for recommendations and instructions for these and any
other applications.
VINYL/STEEL
SIDING
3/8" Clearance
Backer Rod and
Sealant typical
Insulating
Foam
Perimeter Sealant
must extend to room
side of Accessory
Groove.
Accessory Groove
3/8"
Min.
3/8"
WOOD SIDING
WITH TRIM
3/8" Clearance
Insulating
Foam
Perimeter Sealant
must extend to room
side of Accessory
Groove.
Accessory Groove
Sealant typical
3/8"
Min.
3/8"
BRICK VENEER
3/8" Clearance
Backer Rod and
Sealant typical
Perimeter Sealant
must extend to room
side of Accessory
Groove.
Accessory Groove
Insulating
Foam
3/8"
Min.
3/8"
WOOD
SIDING
Insulating
Foam
1/8"
1/8" Clearance
Sealant typical
Accessory
Groove
A.
Insert backer rod
INTOTHESPACEAROUNDTHEWINDOWAPPROXIMATELY
DEEP4HISSHOULDPROVIDEATLEASTACLEARANCEBETWEENTHE
BACKERRODANDTHEEXTERIORFACEOFTHEWINDOW
Note: Backer rod adds shape and depth for the sealant line.
5A
5B
B.
Apply a bead of high quality exterior grade sealant
to the entire
perimeter of the window.
C.
Shape, tool and clean excess sealant
7HENlNISHEDTHE
sealant should be the shape of an hourglass.
Note: This method creates a more flexible sealant line capable
of expanding and contracting.
