Compare the highest-rated insulation professionals in Sammamish, Washington. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, locally-based contractor specializing in comprehensive home insulation and air sealing services. They are known for their meticulous attention to detail, use of high-performance materials like cellulose and spray foam, and strong focus on improving home energy efficiency. They often work in tandem with other local trades for full-home energy upgrades.
EcoSelect is a leading regional provider known for its expertise in eco-friendly and high-performance insulation solutions. They offer a wide range of services, from energy audits to complete insulation retrofits, and are well-versed in local utility rebate programs. Their team is certified for spray foam and dense-pack cellulose installations.
While offering roofing services, this company has a dedicated and well-regarded insulation division. They are a strong choice for projects that may involve coordinating attic insulation with roof work. They provide thorough insulation removal and replacement services, particularly for attics and crawl spaces, and use modern blown-in fiberglass and cellulose.
The insulation market in Sammamish is characterized by high-quality, specialized contractors catering to an affluent and environmentally conscious community. Homeowners in this area are often focused on long-term energy savings, comfort, and sustainability, leading to strong demand for advanced solutions like spray foam and comprehensive air sealing. The competition level is moderate to high, with a few dominant local players and several regional companies vying for business. Due to the high cost of living and the quality of materials used, pricing is typically at the premium end of the scale. A standard attic blow-in with cellulose can range from $1,500 to $3,500, while a full attic spray foam job can easily exceed $10,000. Contractors serving this market are generally well-versed in Washington State energy codes and local utility rebates from providers like Puget Sound Energy.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Sammamish regulations and climate
Get answers to common questions about insulation services in Sammamish, Washington.
For our damp, cool winters and mild summers, the top priorities are air sealing and attic insulation. Proper air sealing prevents moisture-laden air from entering wall cavities, which is critical to prevent mold in our humid climate. Upgrading attic insulation to at least R-49 (as recommended by Washington State Energy Code for our zone) will significantly improve heat retention and comfort during our lengthy rainy season.
Insulation projects must comply with the Washington State Energy Code (WSEC), which sets minimum R-value requirements. For most retrofit insulation work in existing homes, a permit is not typically required in Sammamish. However, if the project is part of a larger remodel, involves structural changes, or includes new construction (like a finished attic), a building permit will be necessary, and the insulation must be inspected for code compliance.
Late spring through early fall (May to September) is ideal, as the weather is drier, allowing for proper installation of materials like spray foam and for attic work to be done safely in more moderate temperatures. However, professional contractors work year-round; scheduling in the off-peak seasons (late fall or winter) can sometimes lead to better availability and potential scheduling flexibility.
Always verify the contractor is licensed, bonded, and insured in Washington State. Look for local companies with strong references in the Eastside communities and specific experience with our housing styles, which often include vaulted ceilings and complex roof lines. A reputable provider will perform a thorough energy assessment, explain local code requirements, and provide a detailed, written estimate that includes air sealing as a standard part of the service.
Absolutely. Our high annual rainfall and humidity make proper vapor control paramount. When adding insulation, especially in basements or crawl spaces, it's crucial to address exterior drainage and interior vapor barriers to prevent condensation within walls. Using moisture-resistant insulation materials (like closed-cell spray foam or mineral wool) in critical areas and ensuring adequate ventilation in attics are standard best practices for our region.