Building Envelope Solutions
Basement and crawl space insulation
Cold floors, damp basements and drafts at the baseboard usually start below the house. The rim joist, where the floor framing sits on the foundation, is one of the leakiest spots in a home.
Queens homes have every kind of foundation: full basements in Tudors and colonials, crawl spaces under additions, and low cellars under row houses.
What we insulate
- Rim joists: foam on the band around the whole basement.
- Basement walls: foam on the foundation walls of heated or finished basements.
- Crawl spaces: walls and rim sealed, for warmer floors in additions and sunrooms.
Why closed-cell foam
Closed-cell spray foam seals and insulates in one layer, and it doesn’t absorb water, so it suits concrete, block and stone foundation walls. Where a space needs a fire-rated covering, we tell you before we start.
Rebates
Queens is split between utilities. Much of the borough has National Grid gas, parts of northwest Queens have Con Edison gas, and the Rockaways have PSEG Long Island electric. Most one- to four-family homes now go through NYSERDA programs. For 2027, Con Edison and National Grid plan one joint weatherization program for market-rate homes and apartment buildings. We check what is open for your address before we price the job. See the NYC rebate guide.
Common questions
Do you insulate the basement walls or the ceiling? If the basement is heated or you use it, the walls and rim joist. If it is cold storage, sometimes the ceiling instead. We decide after we see it.
Is the estimate free? Yes. Call (347) 200-5089.