Foam insulation behind window mouldings

We have a draught problem behind/through the gaps in front window mouldings we removed them for stripping and the gaps between brick and woodwork are 3-4 inches wide and 7-8 inches deep. To fill them properly I think we need insulation blown in to fill the gap. Has anyone done this? Does anyone know this is not a good idea and can anyone recommend a good contractor who does this? Thanks

orrsuz

in Doors & Windows 12 years and 5 months ago

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mrgregpittman | 12 years and 3 months ago

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You can use rubber weather sealing to fill those gaps and fix the drafty windows. That’s what we did with our bay windows. The rubber sealing just closes all gaps and prevents air leakage. http://www.championwindow.com/windows/bowbaygarden.aspx

brucef | 12 years and 5 months ago

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Insulation will not help with drafts, you have to seal air leakage. We normally caulk behind brick molding and along side brick molding. if there are cavities behind, and you have managed to seal the infiltration, I would get a case of the window foam (doesn’t expand as strongly), and try that before calling in a contractor.