Building Envelope Solutions
Blown-in insulation for Long Island homes
Blown-in is the simplest way to add a lot of insulation without opening anything up. Loose fill goes on the attic floor, and dense-pack cellulose goes into closed walls through small holes.
Where it works
- Ranch and high-ranch attics: long, open attic floors, after we seal the gaps in them.
- Capes and colonials: attic floors and the side attics behind knee walls.
- Closed frame walls: one small hole per bay, filled and patched.
How a job goes
- We seal the attic floor around pipes, wires, lights and the hatch.
- We add loose fill to the depth the attic needs, or dense-pack the walls.
- We plug and patch the holes and clean up.
Rebates
On Long Island, gas is mostly National Grid and electric is PSEG Long Island. Depending on your home and what is funded this year, that can open National Grid, PSEG Long Island or 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 rebate guide.
Common questions
Is cellulose safe? It is recycled paper treated with borate to resist fire and pests.
Do I need to empty my attic? It helps to clear stored items from the area we work in. We’ll tell you what needs to move when we visit.