Compare the highest-rated insulation professionals in Washington, Illinois. All contractors are licensed, insured, and verified through our rigorous screening process.
A leading regional contractor specializing in high-performance building insulation and air sealing solutions. They are known for their professional crews, use of premium materials, and expertise in both new construction and retrofit projects. They are a top choice for homeowners seeking comprehensive energy efficiency upgrades.
Part of a national brand with a strong local franchise, Koala focuses on eco-friendly solutions and thorough home performance assessments. They excel at insulation removal and replacement, using blown-in cellulose and fiberglass. Their service area explicitly includes Washington, and they are highly rated for customer communication and education.
A specialist contractor focused primarily on spray foam applications for residential and commercial properties. They are experts in closed-cell and open-cell foam, offering superior air sealing and R-value per inch. This makes them an ideal choice for complex projects like cathedral ceilings, basement walls, and achieving high energy efficiency standards.
** The insulation market serving Washington, Illinois is characterized by a mix of a few highly specialized local contractors and several established providers from the greater Peoria area. The competition is moderate but of high quality, with these top-tier providers holding relevant certifications from organizations like the Building Performance Institute (BPI) and Spray Polyurethane Foam Alliance (SPFA). The market is driven by both new construction in Washington's growing subdivisions and a strong demand for energy efficiency retrofits in existing homes, especially concerning attic and basement insulation. Typical pricing is competitive with national averages but can vary significantly based on material choice. Blown-in fiberglass or cellulose for an attic may range from $1,500 - $3,500, while a full spray foam application can be a more significant investment of $5,000 - $15,000+ depending on the scope. Homeowners are increasingly aware of local utility rebates (often from Ameren Illinois) and federal tax credits for energy efficiency, which the leading contractors are proficient at helping customers navigate.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Washington regulations and climate
Get answers to common questions about insulation services in Washington, Illinois.
For Washington's climate, the U.S. Department of Energy recommends attic insulation levels of R-49 to R-60. This high recommendation is due to our region's significant temperature swings, with cold, windy winters and hot, humid summers. Properly insulating to this level is crucial for maintaining home comfort, reducing energy bills for heating and cooling, and preventing ice dams in winter.
Illinois has adopted the 2021 International Energy Conservation Code (IECC), which sets minimum insulation requirements for new construction and major renovations. More importantly for homeowners, local utilities like Ameren Illinois often offer rebates for adding insulation, especially in attics and basements. A qualified local contractor will be familiar with both the code requirements and the rebate application process to help you maximize your savings.
Insulation can be installed year-round, but the ideal times are late spring (April-May) and early fall (September-October). These periods typically offer mild, dry weather in Central Illinois, which is optimal for contractors to work in your attic or crawl space. Scheduling during these shoulder seasons also ensures your home is properly prepared before the peak heating and cooling demands of winter and summer.
Prioritize contractors who are licensed, insured, and have strong local references. Look for companies experienced with our regional climate challenges, such as managing attic ventilation to prevent moisture issues. It's also wise to choose a provider who performs a thorough energy assessment first and offers detailed, written estimates that specify the insulation type, R-value, and scope of work.
For most older homes in our area, air sealing is the critical first step before adding insulation. Gaps around windows, doors, wiring penetrations, and attic hatches let conditioned air escape, undermining even the best insulation. A professional assessment will identify these leaks. A comprehensive approach that seals air leaks first, then adds the proper insulation, is the most effective strategy for improving comfort and efficiency.