San Diego's trusted spray foam insulation experts. Lower your energy bills, improve comfort, and protect your property with industry-leading foam solutions.
AAU Foam is a full-service spray foam insulation company serving the San Diego area. We specialize in residential and commercial spray foam applications that deliver superior energy efficiency, moisture protection, and long-term savings.
Whether you need attic insulation, crawl space sealing, roof coatings, or full-building spray foam, we bring the right equipment and expertise to every job. Our team provides honest assessments and competitive pricing — no upsells, no shortcuts.
Excellent soundproofing and air sealing for interior walls and attics. Cost-effective with great thermal performance.
Superior R-value and moisture barrier. Ideal for crawl spaces, exterior walls, and areas needing maximum protection.
Full attic spray foam for maximum energy efficiency. Stop heat loss through your roof and slash energy bills.
Seal and insulate crawl spaces to prevent moisture intrusion, mold growth, and energy loss from below.
Spray-applied elastomeric roof coatings for waterproofing, energy savings, and extended roof life.
Large-scale spray foam for commercial buildings, warehouses, metal structures, and new construction.
Get a ballpark estimate for your project. Select a job type and enter your square footage.
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Costs vary by foam type and project scope. Open-cell spray foam typically runs $0.35-$0.55 per square foot, while closed-cell costs $1.00-$2.00 per square foot. Total project cost depends on area size, foam type, and accessibility. We provide free on-site estimates for accurate pricing — use our quote calculator for a ballpark figure.
Open-cell spray foam provides R-3.5 to R-3.7 per inch, great for soundproofing and interior applications. Closed-cell provides R-6.0 to R-7.0 per inch — the highest R-value per inch of any commercial insulation. This means superior insulation in less space compared to fiberglass or cellulose.
Most residential spray foam jobs are completed in a single day. The foam expands and cures within minutes of application, and the space is typically safe to reoccupy within 24 hours. Larger commercial projects may take 2-3 days depending on scope.
Yes. Once fully cured (within 24 hours), spray foam is completely inert and safe. During installation, our trained technicians follow all EPA and manufacturer safety guidelines. The building should be vacated during application and for the recommended curing period.
Absolutely. Spray foam creates a continuous air barrier with no gaps or seams, which can reduce heating and cooling costs by 30-50% compared to traditional fiberglass insulation. Many homeowners see a return on investment within 3-5 years through energy savings alone.
AAU Foam serves all of San Diego County, including central San Diego, North County (Oceanside, Carlsbad, Escondido), East County (El Cajon, Santee, Lakeside), South Bay (Chula Vista, National City), and surrounding areas. Contact us for a free estimate anywhere in the county.
Schedule a free on-site assessment. We'll evaluate your space and provide an accurate quote.