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.
Bronx houses usually have full basements or cellars, many with stone or block foundations that let in cold air and damp.
What we insulate
- Rim joists: foam around the band on the foundation.
- Basement walls: for heated or finished basements.
- Crawl spaces: under additions and porches.
- Apartment building cellars: where pipes and boilers sit, when a building plan calls for it.
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.
Incentives
The Bronx has Con Edison gas and electric. Buildings with 5 or more units may qualify for the Con Edison multifamily program, and one- to four-family homes may qualify for 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 before we price the job.
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.