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Serving San Luis Obispo, CA and surrounding areas. (805) 329-7188
San Luis Obispo Insulation handles insulation for homes and businesses across the Central Coast - from attic upgrades to full spray foam installs. We give you a straight answer and a free on-site estimate before any work begins.
San Luis Obispo Insulation is a licensed insulation contractor based in San Luis Obispo, CA, offering 16 insulation services for homeowners and businesses across 12 cities on the Central Coast. Whether you need spray foam in a crawl space, blown-in insulation in an aging attic, or a full home energy upgrade, we diagnose the problem first and recommend what actually makes sense for your specific home - not just the most expensive option.
High energy bills and drafty rooms? Spray foam seals air leaks and insulates in one step - lasting the life of your home.
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Hot upstairs rooms or thin insulation overhead? A properly insulated attic keeps summer heat out and winter warmth in.
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Loose-fill blown-in insulation fills every corner and irregular cavity older homes have - no tearout required.
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Every part of your home loses energy differently. We assess the whole picture and recommend the right solution for each zone.
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Old, wet, or pest-damaged insulation does more harm than good. We remove it cleanly and prepare the space for a fresh install.
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Cold floors and musty smells point to a crawl space problem. Insulating beneath your floor stops heat loss and moisture infiltration.
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Walls that feel cold to the touch are losing your conditioned air. Wall insulation brings comfort to every room in the house.
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Gaps around pipes, wires, and fixtures let air flow freely through your walls. Air sealing stops the drafts insulation alone cannot fix.
Learn MoreThree steps from your first call to a finished, comfortable home.
Reach out by phone or through the contact form. We respond within 1 business day. You will speak with someone from our local office - not an answering service - who will ask a few questions about your home and schedule a visit at a time that works for you.
We come to your home, inspect the areas you want insulated, measure what is currently there, and identify any issues that should be addressed first - like moisture or old damaged material. Then we hand you a written quote before we leave. No pressure, no obligation.
Once you approve the quote, we schedule the installation at your convenience. Our crew arrives on time, does the work cleanly, and walks you through the finished project before leaving. Most homeowners notice a difference in comfort within the first few days.
We hold an active California Contractors State License Board license and carry full liability and workers compensation insurance. Every job is covered - no shortcuts, no gaps.
We visit your home, measure what is there, and hand you a written quote before we leave. You pay nothing for the estimate and owe us nothing if you decide not to move forward.
We are a locally owned company based in San Luis Obispo. We know the housing stock, the climate, and the permit requirements here - which means fewer surprises for you.
If there is a problem with coverage or adhesion within the first year of installation, we come back and fix it at no charge. We stand behind the work after the crew has left.
Ready to get started? Call (805) 329-7188 or send us a message.
"They came out to look at our attic on a Tuesday and the crew was here by Friday. The upstairs bedroom was noticeably cooler within a few days. They cleaned up completely and walked me through exactly what they did."
David R., San Luis Obispo - Attic Insulation
"We had a moisture problem under the house for years. They sealed the crawl space with closed-cell spray foam and put in a vapor barrier. The musty smell is gone and the floors feel warmer in the morning. Worth every dollar."
Maria T., Pismo Beach - Crawl Space Insulation
"I got three quotes and theirs was the most detailed - they listed exactly what they were doing, the depth, and what the final R-value would be. The other two just handed me a number. The job was done in one day and it passed inspection."
James K., Atascadero - Blown-In Insulation
We respond within 1 business day - often the same day. There is no obligation and no pressure. After you submit, someone from our office will call to confirm your address and schedule a free on-site visit. We measure, explain what we find, and hand you a written quote before we leave.
(805) 329-7188San Luis Obispo Insulation is based in San Luis Obispo, CA and serves 12 cities and communities across San Luis Obispo and Santa Barbara counties - including Paso Robles, Atascadero, Santa Barbara, and the South County coast. We typically schedule estimates within 1 to 2 business days throughout our service area.
Honest answers to the questions that matter most before you decide.
Yes - and more than most homeowners expect. Insulation blocks summer attic heat from radiating into your living space and holds warmth in on cool winter nights. The U.S. Department of Energy estimates that air sealing and insulation together can cut heating and cooling costs by up to 15 percent.
Air sealing closes the physical gaps where air moves freely through your walls and ceiling. Insulation slows heat transfer but cannot stop moving air. The two work together - and skipping air sealing is one of the main reasons homeowners do not see the energy savings they expected after a standard insulation job.
If you notice musty smells, soft flooring, or cold floors on mild days, moisture from below is likely the cause. San Luis Obispo's coastal marine layer pushes humidity into unprotected crawl spaces. A vapor barrier and crawl space insulation together stop that moisture before it damages your subfloor or worsens your air quality.
Almost certainly. Homes built before 1980 were constructed under standards far below what is recommended today. Original insulation in those attics has had decades to settle and degrade. A quick attic inspection will tell you exactly what is there - if you can see the wooden joists clearly, you need more coverage.
Yes - Pacific Gas and Electric offers rebates for qualifying insulation upgrades. The amount depends on your home's current insulation level and the scope of work. We are familiar with the current program requirements and can help document your project for the application. Learn more at the PG&E Energy Efficiency Rebates page.
California requires insulation contractors to hold a valid California Contractors State License Board (CSLB) license. You can look up any contractor in about 30 seconds on the CSLB website - it shows whether the license is active and what type of work it covers. Always ask for the license number before hiring anyone.
San Luis Obispo Insulation is a licensed insulation contractor company based in San Luis Obispo, CA, serving 12 cities across the Central Coast since 2023.
We hold an active license issued by the California Contractors State License Board, which oversees residential and commercial contractor licensing throughout the state. Our license covers insulation installation for both residential and commercial properties.
Since 2023 we have completed insulation projects across San Luis Obispo and surrounding communities, covering all 16 services from spray foam and attic blown-in to crawl space vapor barriers and retrofit insulation.
It depends on the condition of what is there. Wet, compacted, or pest-damaged material should come out first. Clean, dry insulation in reasonable shape can usually be topped off rather than replaced - your contractor will measure and advise.
Closed-cell foam is the right choice for crawl spaces, exterior walls, and anywhere moisture is a concern. Open-cell foam is better suited to interior walls and attics where cost matters more and moisture is not a primary factor.
A reputable contractor leaves a depth marker in the attic after blown-in jobs so you can verify coverage yourself. For spray foam, ask for a walkthrough before the crew leaves so you can see the coverage and ask questions while they are still on-site.
Still have questions about what your home needs? The U.S. Department of Energy insulation guide is a reliable starting point - and you can always call (805) 329-7188 to talk through your specific situation at no charge.
San Luis Obispo is a compact city of about 47,000 people on California's Central Coast, best known for Mission San Luis Obispo de Tolosa, the weekly Thursday Night Farmers Market on Higuera Street, and the landmark peak of Bishop Peak visible from nearly every neighborhood. The city is also home to Cal Poly SLO, one of the largest employers in the region, which shapes the local housing market significantly.
A significant share of San Luis Obispo's housing was built between the 1940s and 1970s - including Victorian-era homes, Craftsman bungalows, and Spanish Colonial Revival properties common in the city's historic districts. Many of these homes were built before modern insulation standards existed and have thin or degraded coverage in the attic, crawl space, and walls. The mix of older construction and California's Mediterranean climate - dry, hot summers and damp winters with concentrated rainfall from December through March - creates real year-round demand for insulation upgrades.
San Luis Obispo Insulation has served homeowners and businesses throughout San Luis Obispo since 2023. From hillside lots near Bishop Peak to the older bungalows in the Railroad District and neighborhoods around Cal Poly, we work on homes across every part of town. If you are dealing with high energy bills, cold floors, or moisture issues, we are familiar with what causes those problems in this specific market and know how to fix them.
By appointment only, no walk-ins.
San Luis Obispo Insulation
1131 Monterey St #2San Luis Obispo, CA 93401(805) 329-7188estimates@sanluisobispoinsulation.comAlways open, 24/7.Contact us today and we will schedule a free on-site estimate for your home or business in San Luis Obispo or anywhere on the Central Coast.
