Eco-friendly cellulose insulation installed by Attic Star — recycled-material insulation with outstanding thermal performance for Bay Area homes.
Tell us about your project and we'll follow up with next steps — usually the same day.
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Made from recycled material, cellulose insulation delivers strong thermal and sound performance with a lighter environmental footprint.
Cellulose insulation is a smart choice for homeowners who want effective energy savings and an environmentally friendly solution. Made from recycled paper treated with non-toxic fire retardants, cellulose provides excellent thermal performance and superior coverage.
Ideal for walls, attics, and hard-to-reach spaces, cellulose is blown in to create a dense barrier that reduces drafts and helps maintain consistent indoor temperatures. Our team uses advanced equipment and techniques to ensure precise installation—giving you comfort, efficiency, and peace of mind for years to come.
High thermal efficiency Cellulose insulation delivers outstanding thermal performance with a high R-value per inch, effectively slowing heat transfer through your walls, attic, and floors. Its dense, tightly-packed fibers create a continuous thermal barrier that minimizes energy loss and keeps your home comfortable year-round.
Eco-conscious and safe Made from up to 85% recycled materials and treated for fire resistance, cellulose is a non-toxic, sustainable insulation option that supports a greener home.
Great for soundproofing Thanks to its density, cellulose is also excellent at reducing sound transmission—giving you a quieter indoor environment.
It’s perfect for attics, walls, crawl spaces, and floors—especially in existing homes where dense packing can fill in gaps and boost performance.
With proper installation and no moisture intrusion, cellulose insulation can last 20–30 years or longer while maintaining its effectiveness.
Insulation performance is measured by R-value — a rating of how well a material resists heat flow. Higher R-values mean better insulating power per inch, which is why the right material and installed thickness matter as much as just "adding insulation."
Over time, insulation settles, compresses, or gets contaminated by moisture, pests, or age, which quietly lowers its effective R-value even though it's still physically there. That's why a visual inspection alone often understates how much performance has actually been lost.
The Bay Area's mix of coastal fog, inland heat, and mild winters means insulation here does double duty — keeping summer heat out and retaining warmth during cooler nights — so getting the material and coverage right affects comfort year-round, not just in one season.
📍 Sunnyvale
📍 Fremont
📍 Walnut Creek
📍 Pleasanton
📍 San Mateo
📍 Concord
📍 Santa Rosa
📍 San JoseWe assess your current insulation and give you an exact, no-surprise quote on the spot.
Damaged, settled, or contaminated insulation is fully removed and hauled away.
We install the right material and R-value for your space, done to code.
We inspect the finished work with you and confirm everything meets our standards.
Every cellulose insulation job is backed by our satisfaction guarantee. Get a free, honest inspection and know exactly what you're paying for before we start.
Cost depends on the size of your home and the scope of the work. We provide a free, no-obligation inspection and give you an exact quote before anything begins — no surprises.
Most jobs are completed in a single day. Larger or more involved projects may take longer, which we'll confirm during your free inspection.
You don't need to stay in the work area itself, but we do ask that someone is available at the start and end of the appointment. Our crew works cleanly and keeps you updated throughout.
Yes — Attic Star is fully licensed, bonded, and insured, and has served Bay Area homeowners for over 25 years.
Common signs include noticeably higher energy bills, uneven temperatures between rooms, visible damage or moisture staining, or insulation that looks thin, compressed, or discolored. A free inspection can tell you exactly what's going on.
Batt, blown-in, cellulose, fiberglass roll, and rockwool each have different strengths — cost, R-value per inch, fire resistance, soundproofing, and ease of installation in tight spaces all vary. We'll recommend the right fit for your home and budget during your inspection.
Properly installed insulation reduces how hard your heating and cooling system has to work, which typically shows up as lower energy usage — though the exact savings depend on your home's current insulation levels and how leaky or well-sealed it is overall.
Fill out the form and we'll follow up to schedule your free, no-obligation inspection — most homeowners hear back the same day. Prefer to talk now? Call us directly.
Takes less than a minute — tell us about your project and we'll follow up the same day.
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