Spray foam insulation is the highest-performance insulation available for Ottawa homes. Unlike fiberglass batts that sit between studs and leave gaps, spray foam expands on application to fill every crack, crevice, and penetration — insulating and air-sealing in a single step.
There are two types. Closed-cell spray foam is denser, offers a higher R-value per inch, resists moisture, and adds structural strength — ideal for basements, crawlspaces, and rim joists. Open-cell spray foam is lighter, more affordable, and excellent for attics and wall cavities where maximum R-value isn't the priority.
For Ottawa's wide temperature swings — from -30°C in January to +30°C in July — spray foam delivers the biggest comfort and energy improvement of any single upgrade. Most customers see a meaningful drop in heating and cooling costs and a noticeably more comfortable, quiet home.
A Local Challenge We Understand
Ottawa's extreme seasonal range makes insulation quality critical. Older homes in the Glebe, Centretown, and Sandy Hill often have little or no wall insulation. 1970s–1990s homes in Orléans, Barrhaven, and Kanata frequently have under-insulated attics and rim joists. Spray foam is especially valuable in Ottawa because it handles both the deep cold and the humid summer condensation that causes mold in conventional insulation.
What You Get
The benefits our Ottawa customers see from this service.
How It Works
A clear, step-by-step process — no surprises.
Free home assessment
We inspect your attic, walls, basement, and rim joists and recommend where spray foam will deliver the most value.
Product selection
We choose closed-cell or open-cell foam based on the application, moisture exposure, and your budget.
Prep & application
The area is prepped and masked; foam is sprayed and expands to fill every gap, then trimmed flush where needed.
Ventilation & cure
We ensure proper ventilation during the 24–48 hour cure, then confirm the install is complete and clean.
Ottawa spray foam services we provide
Searches Ottawa homeowners use to find this service — and what we deliver.
Frequently Asked Questions
Straight answers to the questions Ottawa homeowners ask us.
How much does spray foam insulation cost in Ottawa?
Spray foam is priced by board foot (a square foot at 1 inch thick). A typical Ottawa attic or rim joist project ranges from $2,500 to $7,000 depending on area and thickness. Whole-home projects are higher. We give a fixed quote after assessment.
Closed-cell or open-cell spray foam?
Closed-cell is denser, has a higher R-value per inch (~R6.5), resists moisture, and adds structural strength — best for basements, crawlspaces, and rim joists. Open-cell is lighter and more affordable (~R3.7), best for attics and wall cavities. We recommend per application.
Is spray foam safe for my family?
Once fully cured (24–48 hours), spray foam is inert and safe. We use industry-approved products and ensure proper ventilation during application. We'll tell you when it's safe to re-enter.
How long does spray foam installation take?
Most residential jobs are completed in one day; larger projects may take two. We work efficiently and clean up thoroughly.
Can spray foam be added over existing insulation?
Often yes, but we assess each case. Wet or moldy fiberglass should be removed first. We'll recommend the best approach during your free assessment.