I use foam insulation from an aerosol can when insulating around rough window and door openings. The next day I trim all the excess foam away from the wall and the window frame with a mastic trowel (see drawing). Its serrated edges saw through the foam, leaving the foam flush with the wall.
Keith Metier, Highland Park, IL
Fine Homebuilding Recommended Products
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Foam Gun
We like using a professional foam-dispensing gun as opposed to straw cans because it allows you to easily control bead size and reuse the can.
Insulation Knife
If you like insulating with mineral wool, this knife makes cuts that are clean, neat, and easy — it's much better than a utility knife which can be slow and messy.
Respirator Mask
A full-face respirator prevents fog up and is more comfortable than constantly replacing particle makes that get fouled or sweaty and is ideal for the pro installer.
