Our small enlargement foam is built especially for window and door installations. It expands to fill voids that fibreglass batt insulation may not properly attain. As opposed to fibreglass, foam acts a vapour barrier that seals openings/gaps and decrease leakage. Stuffed into gaps, compressed fibreglass insulation loses its insulating benefit. https://fiberglassexteriordoorins04826.rimmablog.com/31512261/rumored-buzz-on-bay-window-in-scarborough-ontario