Spray foam in Manhattan buildings
In Manhattan the heat usually escapes through the roof, the bulkhead and the walls that face the street or the rear yard. Spray foam insulates those surfaces and seals the gaps around them in one pass, which matters in buildings that are a hundred years old.
Where we spray in Manhattan
- Townhouse and brownstone roofs: closed-cell foam under the roof deck when the top floor is opened up.
- Top-floor apartments: the roof cavity over the unit, coordinated with the building.
- Bulkheads and stair towers: cold, leaky spaces that let heat pour out of the top of the building.
- Exterior walls during a renovation: before new drywall goes up.
- Commercial ceilings and walls: during office and retail build-outs, on the general contractor’s schedule.
Open cell or closed cell?
- Closed cell: the usual choice under flat roofs and on masonry, where it also slows moisture.
- Open cell: lighter, and helps with sound inside framed walls and ceilings.
Working in a co-op or condo
We work with your managing agent, send the certificates of insurance the building asks for, and keep to its work hours and elevator rules.
Incentives
Manhattan has Con Edison gas and electric. Buildings with 5 or more units may qualify for the Con Edison multifamily program, and larger buildings can use envelope work toward Local Law 97.
Common questions
Does spray foam smell? There is an odor while it cures. We ventilate the work area and tell you when the space can be used again.
Can you spray in an occupied building? Yes. We isolate and ventilate the work area and plan the job with the building.
