A homeowner in Wash Park called us last spring, convinced she needed spray foam. Her actual problem turned out to be a handful of gaps behind finished plaster walls, exactly the kind of job injection foam handles better and for less money. Picking between these two isn’t about which material is objectively stronger. It’s about …

Researching insulation for a crawl space, basement rim joist, exterior wall, or unvented attic? One of the first questions you may ask is: does closed cell foam absorb water? Short answer: closed-cell spray foam resists water far better than many other insulation materials. That does not mean it makes a home waterproof or solves every …