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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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.
Nitrile Work Gloves
Do yourself a favor and protect your hands while you work. These lightweight, breathable work gloves will keep your hands safe while cutting and fitting.
Caulking Gun
It's important for any insulator to have a good caulking gun for air sealing or adhesives, and this one features a revolving frame that makes orienting the tip a breeze.
