Wall insulation on Staten Island

Wall insulation without demolition

Many older houses were built with empty wall cavities. We insulate them from outside or inside: one small hole per stud bay, dense-pack cellulose blown in under pressure until the cavity is full, then the hole is plugged and patched.

Staten Island has more detached frame houses than any other borough, and many older ones have empty or half-filled walls.

Where it works

• Frame houses with siding: we drill from outside under a lifted course.
• Rooms over garages: walls and floors that face the cold garage.
• Plaster walls inside: we drill from inside and patch.

How a job goes

1. We check the walls for wiring, blocking and old insulation, and pick the side to drill from.
2. We drill, fill each bay and check that it is full.
3. We plug and patch the holes and clean up.

Rebates

Staten Island has National Grid gas and Con Edison 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

Will you damage my siding? On vinyl or wood siding we lift a course, drill and put it back. On brick we usually drill from inside.

How long does it take? Most Staten Island houses take one or two days.