Spray Foam Insulation

Name: OTS Chicago Insulation
Address: 1275 Rand Rd, Des Plaines, IL, 60016, US
Telephone: (855) 511-5652

The only insulation that seals and insulates at the same time — and the difference shows up on your energy bill every month.

Most insulation materials fill a space. Spray foam does something different — it fills the space and seals every gap around it in the same application. That combination matters in Chicago-area homes where cold air finds its way in through the smallest cracks around pipes, electrical boxes, and structural connections. We approach every spray foam job by understanding exactly where air is moving and which type of foam will stop it most effectively for that specific space.

Not every area of your home calls for the same product. Closed cell spray foam is dense, rigid, and moisture-resistant — the right choice for exterior walls, crawl spaces, basement rim joists, and anywhere humidity is a persistent issue. Open cell foam expands more freely, works well for interior walls and attic applications, and provides solid sound absorption alongside its thermal performance. We assess the space first and recommend the product that will actually perform — not the one that is easiest to install.

When spray foam is installed correctly, the results are immediate and lasting. Drafts disappear. Rooms that never held temperature finally do. The HVAC system stops working overtime to compensate for air loss through the building envelope. If your home in Des Plaines, Schaumburg, Naperville, or anywhere across the Chicago metro has never had proper air sealing alongside insulation, spray foam is often the most effective single upgrade you can make. Reach out to OTS Chicago Insulation for a free estimate and find out which product is right for your home.

What We Offer:

Closed Cell Spray Foam Insulation — Dense, rigid, and moisture-resistant. Ideal for exterior walls, crawl spaces, basement rim joists, and any area where humidity infiltration is a concern. Provides the highest R-value per inch of any spray foam product.
Open Cell Spray Foam Insulation — Expands freely to fill cavities completely and works well for interior walls, attics, and spaces where flexibility and sound absorption matter alongside thermal performance.
Rim Joist Spray Foam — One of the most common and cost-effective applications. Sealing and insulating the rim joist stops a significant source of cold air infiltration in Chicago-area homes with exposed basements and crawl spaces.
Crawl Space Spray Foam — Applied directly to crawl space walls and floor framing to stop cold air from rising into the living space above. Works alongside vapor barrier installation for complete moisture and thermal control.
Attic Spray Foam Application — Applied to the underside of roof decking or attic floor framing depending on the configuration. Creates an unvented attic assembly that significantly improves whole-home thermal performance.
Exterior Wall Spray Foam — Applied inside wall cavities during renovation or new construction to create a continuous thermal and air barrier from the outside in. Paired with other insulation methods where additional R-value is needed.
Air Sealing & Gap Closure — Every penetration, gap, and crack around the spray foam application area is sealed as part of the job. Air sealing is what makes the insulation perform at its rated value — without it, performance drops significantly.

Why Choose OTS Chicago Insulation for Spray Foam Insulation

Right Product for the Right Space — We assess your specific application before recommending open or closed cell foam. The product recommendation is based on what your home actually needs — not what is standard across every job regardless of conditions.
Proper Application Every Time — Spray foam performance is directly tied to how it is applied. Temperature, mixing ratios, and thickness all affect the final result. We install it correctly so it performs the way it is rated to perform.
Combined Insulation and Air Sealing — Most insulation contractors treat these as separate steps. We address both in a single spray foam application, which delivers better results and eliminates the gaps that standard insulation alone cannot reach.
Experience With Chicago-Area Conditions — Homes in Des Plaines, Schaumburg, Arlington Heights, and surrounding suburbs deal with specific cold and humidity challenges. We have applied spray foam in enough of these homes to know what each application requires to hold up through Illinois winters.
One Team, Full Responsibility — The crew that assesses your home installs the foam. There are no subcontractors and no handoffs. If something does not meet the standard we set at the start, it gets corrected before the job is called finished.