About Long Island Insulation Co.
We are a insulation crew, not a sales team
680+ homes across Nassau and Suffolk since 2011. Twelve people, all employees, no subcontractors. Founded by Dan Kowalski in 2011 after seeing too many homeowners stuck with drafty, under-insulated homes. Still based out of the same Hicksville shop.
Six things that do not change
Every contractor says they are different. Here is what we actually do differently, on every job, since day one.
Employees, not subs
Every installer on your jobsite is W-2, factory trained, and has been with us an average of 3+ years. No temp labor, no day crews.
Licensed and insured everywhere we work
Nassau HIC #H0109620000. Suffolk #44127-H. $2M general liability. Full workers comp. No gaps.
We show up when we say we will
We handle the rebate paperwork — you just feel the difference. If something changes, you hear from us before the scheduled time, not after.
Written quotes, no surprises
You get a line-item written quote within 48 hours of the walk-through. The number you sign is the number you pay.
Local. Not a franchise.
Hicksville shop, Long Island crew, Long Island families. We live in the neighborhoods we work in.
Factory-certified installers
NYSERDA Approved, BPI Certified. Manufacturer warranties only hold up when the installer is certified.
From Long Island energy retrofits to 680+ homes
Dan saw hundreds of ripped-off facades across the South Shore and started the company with two guys and a trailer.
Factory trained, Preferred Contractor status. Opened up the premium side of the business.
Still mostly word-of-mouth. Nassau County was 80% of the book.
No day labor, no subs. Every installer is W-2 and factory trained.
Second major manufacturer certification. Opened engineered cedar and insulated vinyl lines.
BBB A+ rating. 4.9 stars on Google. Marco joins as estimator. Sarah runs the office.
We handle the rebate paperwork — you just feel the difference. That has not changed since day one.
Meet the team
Three people you will deal with directly. Everyone else is on the roof.
Ready to get a real number on your house?
Tell us your address and Marco will call you back within 4 business hours to schedule a walk-through. The estimate is free. The walk-through takes 30 minutes. No pitch at the end.
or fill out the form, it takes 20 seconds
Schedule a walk-through
Five fields. We take it from there.