Pella V784840 Window User Manual


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K. Seal the window to the exterior stops. Place a corner
bead of sealant around the perimeter of the window frame
where the new frame contacts the original window frame.
Also place a bead of sealant between the sill adapter and
THEBOTTOMOFTHEEXISTINGWINDOWSILL4HISBEADSHOULD
connect to the jamb sealant beads. Tool the sealant beads.
Note: When corner beading sealant around the
perimeter of the window frame, be careful not to cover
the weep holes at the sill.
A. Apply insulating foam sealant. From the interior,
INSERTTHENOZZLEOFTHEAPPLICATORAPPROXIMATELY
deep into the space between the window and the
ROUGHOPENINGANDAPPLYADEEPBEADOFFOAM
4HISWILLALLOWROOMFOREXPANSIONOFTHEFOAMAND
will minimize squeeze out. If using foam other than
'REAT3TUFF
™
Window and Door Insulating Foam
Sealant by the Dow Chemical Company, allow the
FOAMTOCURECOMPLETELYUSUALLYTO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 new and existing window
frame. DO NOT completely fill the space from the
back of the blind stops to the interior face of the
opening.
5 INTERIOR SEAL
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.
B. Check window operation by opening and closing the window.
Note: If the window does not operate correctly, check to make sure it is still plumb, level,
square and that the sides are not bowed. If adjustments are required, remove the foam
with a serrated knife. Adjust the shims and reapply the insulating foam sealant.
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6 INTERIOR TRIM
A. Reinstall existing interior sash stops or new trim as desired.
High Performance Installations:)NSTALLNEWXINTERIORSASHSTOPSATHEADJAMBS
ANDSILL0REDRILLFORANDINSERTXmATHEADCORROSIONRESISTANTSCREWS3CREWSSHOULDBE
PLACEDFROMEACHENDANDNOTMORETHANONCENTER
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