Spray Foam Insulation
Maximum energy efficiency and air sealing.
Blown-In Insulation
A cost-effective solution for attics and open spaces that helps improve coverage, reduce heat loss, and increase comfort year-round.
- Licence RBQ : 5882-6686-01Régie du bâtiment du Québec
- Licensed & Insured
- 15+ Years of Experience
Service details
Why Choose Blown-In Insulation?
Blown-in insulation is a practical and efficient solution for improving thermal performance in attics and other hard-to-reach spaces. It is designed to provide consistent coverage across open areas, helping reduce heat loss, improve energy efficiency, and support a more comfortable indoor environment throughout the year.
It is especially useful for topping up existing attic insulation or upgrading under-insulated spaces without major disruption. Because it can settle around framing, corners, and uneven areas, blown-in insulation helps create a more complete layer of coverage where traditional materials may be harder to install evenly.
Where Does Blown-In Insulation Work Best?
Blown-in insulation is most commonly used in attics, roof spaces, and other open areas where full, even coverage is important. It is a strong option for improving the performance of existing insulation and helping bring older or under-insulated spaces up to a better standard.
It works especially well in residential and renovation projects where access, coverage, and efficiency matter. Whether used for attic top-ups or larger insulation upgrades, blown-in insulation is a reliable choice for improving comfort and overall energy performance.
Heat-loss map
Where Your Home Loses Heat
Select an area on the drawing to see where heat escapes and how we fix it.
Areas and fixes
- Attic
- Exterior walls
- Rim joists
- Basement walls
- Crawl space
- Old insulation
Attic
Blown-in insulation tops up existing attic insulation without major disruption, settling around framing, corners and uneven areas. Batt insulation fits standard joist spaces in ceilings.
How we fix it
Exterior walls
Spray foam expands as it’s applied, sealing gaps and cracks to help reduce drafts and air leakage. In framed walls, batt insulation fits standard stud spaces for dependable thermal performance.
How we fix it
Rim joists
Rim joists are among the areas where air leakage and heat loss are most likely to occur. Spray foam combines insulation and air sealing in one application.
How we fix it
Basement walls
Basements can account for about 25% of a home’s total heat loss. Spray foam is a strong choice for basements, combining insulation and air sealing in one application.
Source: Government of Canada, Keeping the Heat In.
How we fix it
Crawl space
Spray foam is especially effective in hard-to-insulate spaces like crawl spaces, where thermal performance and air sealing both matter. It expands to seal gaps and cracks, helping reduce air leakage.
How we fix it
Old insulation
Over time, insulation can become compacted, damaged or contaminated, and its performance can decrease. We remove it with industrial vacuum systems so the space can be inspected and prepared before re-insulating.
Older materials such as vermiculite may require testing or a specialized assessment before removal, due to the potential presence of asbestos.
How we fix it
Services
Our Other Insulation Services
Batt Insulation
Cost-effective insulation for walls and ceilings.
Insulation Removal
Removal of old, damaged, or contaminated insulation to expose the existing space.
Get a Free Blown-In Insulation Quote
Looking for blown-in insulation? TNT Spray Foam provides professional blown-in insulation services throughout Québec and Eastern Ontario.
Tell us about your project and our team will help determine the right blown-in insulation solution for your space.
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