5 INSULATING FOAM APPLICATION
Caution: Ensure use of low pressure polyurethane window and door insulating foams and strictly follow the foam manufacturer’s recommendations for application. Use of high pressure foams or improper application of the foam may cause the window frame to bow and hinder operation.
A.Apply insulating foam sealant (see Caution above).
From the exterior, insert the nozzle of the applicator approximately 1" deep into the space between the window and the rough opening and apply a 1" deep bead of foam. This will allow room for expansion of the foam and will minimize squeeze out. If using insulating foam other than Great Stuff™ Window and Door Insulation Foam by the Dow chemical
Company, allow the foam to cure completely (usually 8 to 24 hours) before proceeding to the next step.
Note: It may be necessary to squeeze the end of the tube with pliers to be able to insert into the space between the jamb boards and the rough opening, and between the head and seat board and the rough opening.
Exterior
5A |
6 SEALING THE BAY/BOW UNIT TO THE EXTERIOR WALL CLADDING
When applying siding, brick veneer or other exterior finish material, leave adequate space between the jamb cover and the exterior finish material for sealant.
A. Install the exterior jamb covers onto the outer two windows. Apply a bead of sealant to the edge of the leg that will be driven into the accessory groove. Drive
the short leg into the accessory groove using a block of 6A wood with rounded edges and a hammer.
Sealant
B.Nail the jamb covers to the wall using one nail on each end, and one in the center.
Exterior jamb cover
Accessory groove
C.Cut two pieces of flashing tape 6" longer than the frame height of the window. Apply the flashing tape
3" above the top of the jamb cover, overlapping it onto the water resistive barrier.
6B
Exterior | 6C |
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