We are Central Illinois' home for all of your insulation needs.  We pride ourselves on our hard work, skilled workers, and the ability to be a locally-owned, family business.  Allow us the opportunity to provide an insulation solution for your home or business.

Assured Insulation Decatur is an insulation company based out of Decatur, Illinois providing a full range of services including insulation, spray foam insulation, attic insulation, crawl space encapsulations, air sealing, duct testing, and home energy audits.  Central Illinois homes can be difficult to keep comfortable through hot summers and cold winters - you need an insulation contractor who understands the relationships between every system in your home.

From Peoria over to Champaign and down to Effingham, Assured Insulation Decatur is the reliable and certified insulation company you can trust to increase your home's performance.  We will increase your home's comfort while reducing your energy costs through the extreme Midwest weather you will face.  Our process involves an in-depth energy audit and duct testing to determine the proper type of insulation for your home.  We thouroughly seal any ductwork leaks so you get the most value out of your HVAC System.

When a home is insulated and air sealed, the entire home is affected.  We approach your home as a whole system, meaning that a change to one part of the home will result in changes to other parts of the home.  Addressing your home as a system is vital in creating a safe and efficient house.  We offer spray foam, cellulose and fiberglass insulation depending on the type of project.  We do both residential and commercial insulation installation - whether it be a business, existing home, new construction or pole barn.  Our team of qualified experts will find the right solution to fit your needs.  Contact our team today to get started with a free consultation and analysis of your project.