Q: Can I just spray foam over my existing blown-in insulation in my attic? It has been there for 15 years and has settled.

A: You do not want to spray foam over existing insulation, encapsulating the old insulation.  It will lead to moldy old insulation. The old, settled, blown-in or batt stuff is doing NOTHING for your home’s energy efficiency, comfort, and air quality and may even be contributing to allergies and mold. Pull up the old insulation first.  Then, spray down 1 layer of closed cell Foam […]

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