About us /

Family owned since 2017

A San Leandro insulation contractor serving homes and businesses across the Bay Area.

Umar and Eldar, owners of Insulation Alliance
Umar & Eldar · Owners of Insulation Alliance

We find and eliminate the hidden hazards in your attic and crawl space.

What you don’t know about your attic can hurt you: damaged insulation, rodents, mold and air leaks hide where nobody looks. We inspect the property, show you what we find and build a plan around your needs and your budget.

High-quality work shouldn’t come at a premium. Our services are competitively priced, so more people can enjoy a comfortable, safe home and protect their investment.

From a routine inspection or a single repair to a full replacement or soundproofing, we take care of it.

Up to energy bill savings
35%
Family owned & operated since
2017
Rating on Yelp
4.8
Reviews on Yelp
122

How we work /

Clear terms, in writing

  1. 01

    Free inspection first

    We check your attic, walls and crawl space, take photos and explain what we found. No charge, no obligation.

  2. 02

    A written estimate

    Each area gets its own section with square footage, R-value and product, and one total. Nothing starts until you sign.

  3. 03

    A small deposit

    Any down payment is capped at $1,000 or 10% of the contract, whichever is less. The rest is due when the work is done.

  4. 04

    Lowest price guarantee

    Get a lower written estimate for the same scope from another contractor and we’ll beat it.

  5. 05

    5-year warranty

    Every job is covered by a five-year warranty on our workmanship.

  6. 06

    Licensed and insured

    Licensed, bonded and insured, license #1040824.

Reviews /

What our customers say

4.8 out of 5 on Yelp

“Small building needed new insulation and an attic fan. Very good communication. Price within the ballpark. Arrived and time. Worked hard. Clean during the process, and good cleanup following. I would recommend, and use again.”
Susan P.Concord, CA · June 2026 · Yelp (read the full review, opens in a new tab)

01 / 04

Reflective radiant barrier insulation stapled between the rafters of a ceiling

Ready for a more comfortable home? /

Book your free
inspection

We inspect your attic, walls and crawl space, show you what we find and give you a written estimate.