how to handle gaps bigger than 0.25' and less than 0.5'

james_007November 4, 2011

what are you going to do with the gaps around the window frame if they are bigger than 0.25" and smaller than 0.5"? use good stuff or just silicone sealant or ...? I am replacing my basement windows with vinyl windows. the basement is poured concrete.

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Foam would be my choice.

    Bookmark   November 5, 2011 at 12:21AM
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That's a large enough gap for foam. Great stuff or hilti .

    Bookmark   November 5, 2011 at 8:04AM
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Make sure you use the lower expanding foam for windows.
The high expansion foam can exert enough force to bend a widow casing and interfere with the window's operation

    Bookmark   November 5, 2011 at 9:41AM
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Low expansion foam, sealant, or sealant and backer rod combo.

    Bookmark   November 5, 2011 at 11:41PM
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If the gaps are approaching 1/2" I would definitely use backer rod in addition to minimal expanding foam.

    Bookmark   November 6, 2011 at 9:22AM
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