Spray foam insulation isn't typically used to fill wall cavities, but it can be the best insulation option for other spaces. This type of insulation expands to fill a space, and then it can be trimmed for an even better fit. You can find spray foam in a range of R-values depending on your insulation needs.
An uninsulated or under-insulated attic can lose heat in winter and hold too much heat in the summer. A quick way to improve the insulation is with spray foam. Your contractor can install it between the roof rafters and floor joists. This ensures that the attic is still accessible for home maintenance purposes. Your contractor will also cut any overspray out of the vents so that your roof ventilation system continues to function.
The crawlspace under your home can trap cold air, which means cold floorboards and rooms. Insulating the space with spray foam solves the problem, but it should be done by professionals to ensure that the crawlspace continues to vent properly. Otherwise, condensation can become an issue. Fortunately, there are ways to both insulate and keep the crawlspace dry.
Spray foam is sometimes used to insulate around your HVAC system's ductwork, primarily where there are issues with drafts or temperature transfer. Using spray foam in this capacity requires more care due to the nature of the duct's material and function. A special spray foam product is necessary, as it is the only one strong enough to adhere to a vibrating duct without cracking or crumbling.
4. Inlet Gaps
A house has many different items penetrating the walls. Plumbing pipes, wiring, and dryer vents are a few examples of these items. Small gaps around these can result in cold drafts in the house or heat loss. Spray foam is often used to insulate these areas, as other insulation products simply can't fit into tight spaces.
5. Framing Drafts
Gaps sometimes exist around window or door frames, often as a result of the house settling or the wood shrinking over the years. Sealing up these gaps with silicone may stop the draft, but there will still be a gap in the insulation. Spray foam can be used instead, as it will both seal the draft and provide insulation. It can be sanded down and painted to match the surrounding wall or siding.
Contact a spray foam insulation contracting service for more help.