vinyl windows

Old 01-31-05, 08:23 AM
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vinyl windows

installed new vinyl windows with nailing fins. Everything was great. I usually use the dap spray foam(blue and black can). It is very soft and never had a problem with it. Someone suggested using the hilti window and door spray foam and the homeowner used it(the one with the adhesive base in it). It really expanded And was really hard and I thought the windows would break. About a week later most of the windows have a gap on the sides and now leak air. Tried to move the windows in but the foam is like rock solid. How would you handle the problem? The windows have a full screen. Is their a company that makes a storm window that would fit in the grove that is made for the screen? So that the homeowner can pop them in and out during the change in the seasons. Just an idea that I have.
Old 01-31-05, 10:55 AM
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That's an awful story about the foam. We also use the Dow Latex foam because it doesn't expand and cause the problem you spoke about. It also seems like the other foam will shrink back about 5% after it gets hard, and it doesn't stick to vinyl, thus making the gap you talked about. It looks to me like you have only one option.

Assuming the trim is not on, use a drywall keyhole saw to carefully cut out the foam. Make sure the windows get shimmed and screwed straight and square, then refoam the windows with your Dow foam, or lightly pack the cavity with 2 layers of fiberglass strips. (one strip gets pushed all the way to the nailing fin, the other stays loose toward the front edge of the window.)

Sorry you had the trouble, but I guess life is just a constant series of learning experiences.
Old 02-02-05, 09:46 AM
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As far as the storm window in place of the screen, stop right there before you run into problem number 2!! This will void any and all warranty on those new windows becasue of excessive heat build up that can occur and warp sashes/frames. If these new windows are worth a hoot no storm is nececssary....that's kinda the whole reason for replacing windows to get away from the old technology that' really did'nt work that great back then

Key hole saw, sawzall with short blade, straight bladed knife are all ways to try and cut loose that foam then you'll have to still pick it out anyways. I do not envy you at this point, that stuff sucks when you have to do a repair of any kind or replacement.

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