Attic Star fills gaps and hard-to-reach spaces with blown-in insulation for a complete thermal barrier — free estimates across the Bay Area.
Tell us about your project and we'll follow up with next steps — usually the same day.
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Blown-in insulation reaches corners and cavities that batts can't, giving your attic seamless, gap-free coverage.
Blown-in insulation is one of the most effective ways to improve energy efficiency and reduce indoor temperature fluctuations. Perfect for attics, walls, and tight spaces, this insulation is applied using specialized equipment that fills gaps and voids for complete coverage.
At Attic Star, we use top-quality cellulose or fiberglass materials that are fire-resistant, mold-resistant, and eco-friendly. Our expert team ensures quick and clean installation with minimal disruption, delivering an insulation solution that keeps your home cozy in the winter and cool in the summer—all while lowering your energy usage.
Seamless coverage in every corner Blown-in insulation easily fills hard-to-reach areas and irregularly shaped spaces, offering a tighter, more complete thermal seal than traditional methods.
Lower energy bills With fewer air leaks and better insulation performance, your heating and cooling systems don’t have to work as hard—saving you money every month.
Quick, non-invasive installation Our team completes most installations in just a few hours without the need for major renovations, so you can enjoy the benefits right away with minimal disruption.
Blown-in insulation can last up to 30 years or more, maintaining its effectiveness when properly installed and protected from moisture.
Yes! We use safe, non-toxic materials that meet modern health and safety standards, including options made from recycled or natural fibers.
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
📍 San Jose
📍 Walnut Creek
📍 Pleasanton
📍 San Mateo
📍 Concord
📍 Santa Rosa
📍 FremontWe 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 blown-in 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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