Spray foam insulation in Hawthorne CA - upstairs rooms that stay cool in summer

Spray foam insulation in Los Angeles usually costs about $2 to $5 per square foot. That's the going rate around here, not our price, and where your job lands depends on how much area there is, which foam goes in and any fixes that come first. The written estimate gives you the number for your house.

Open-cell is the softer, less costly foam, and closed-cell is a dense foam that costs more and blocks moisture as well as heat. One cost guide calls open-cell the economical pick for quieting an interior wall and favors closed-cell for roof decks, crawl spaces, outside walls and anywhere moisture is a risk, where it usually pays for itself because it skips the separate vapor barrier, the layer that keeps moisture out. The same guide notes closed-cell needs less thickness to do the same work.

Plan to be out for at least 24 hours, which is what federal safety guidance tells residents, so line up a place to stay before you pick the date. Older federal guidance also says the foam's chemicals, isocyanates chief among them, can cause asthma, breathing trouble and skin and eye irritation during the work and for a while after, which is why that time away matters.

A trained crew should, because the high-pressure, two-part spray kit is a professional system meant only for a trained applicator. In California, insulation work falls under the C-2 insulation and acoustical class, and you can look up any contractor's license with the state licensing board and ask to see their insurance before you hire. We're fully licensed and insured, and the small crew I trained does every install, with me checking the work before we call it done.

Ask before you book, because the right time of year and the weather to avoid should come from your contractor and the foam's maker, and temperature and humidity both change how the foam cures. California also ties some efficiency standards for the walls and roof to the climate zone, so a Hawthorne job follows the standards for your home's zone. We plan it the same way for houses here and in the cities around us, like Inglewood, Gardena and Torrance.

Plan for it before the foam goes in, because older federal guidance says insulation that seals a house can sharply cut the outside air coming in, letting fumes from the foam and from anything that burns fuel, like a gas furnace or water heater, build up indoors. That's why I look at your gas appliances during the estimate. Later on, tell any plumber or electrician working near the foam not to heat or grind it, since that can give off toxic fumes.