Prevent Spray-Foam Problems

摘要

My job at our remodeling firm is largely to work with our staff and subcontractors to prevent and solve problems with our builds. This includes our insulation work and subs. We've used every kind of insulation over the years: fiberglass batts of every type, mineral-wool batts, dense-pack and loose-fill cellulose, blown fiberglass, even dense-packed fiberglass. These materials are safer for workers and homeowners and cost less than spray foam, and they all work perfectly well as insulating materials assuming the assembly is well-built and air-sealed. But there are times when spray foam is the right choice-for condensation control in unvented roofs, for example, and for a combination of air-sealing and insulation in places like leaky attics and brick foundations. We also turn to foam when we need high insulating value in a small cavity. It works great for all of these things.