TrueSeal Insulation provides residential insulation services across Toronto and the Greater Toronto Area, delivered with careful attention to detail. We handle every project — attic, walls or basement — for new construction and renovations alike.
Our full-service approach guides you from start to finish: thermal assessment, material recommendation, installation and final checks. Every job has one goal: a more comfortable home, better protected from moisture, and more energy efficient.
Whether it's new construction or a renovation, we tailor the insulation solution to your building.
Blown-in or batt insulation, vapor barrier and proper ventilation to eliminate thermal bridging and prevent ice damming.
Learn more →Exterior wall insulation for new builds or renovations, including spray foam for optimal air sealing.
Learn more →Foundation and slab insulation for a basement that's comfortable, dry and free of heat loss to the outside.
Learn more →Safe removal of contaminated insulation (mold, rodent droppings, vermiculite) and decontamination before re-insulating.
Learn more →No shortcuts, no surprises. Here's what backs every project we take on.
We carry full liability insurance on every job, so your home and property are protected from start to finish.
Every installation is backed by our workmanship guarantee. If something isn't right, we make it right.
A detailed on-site assessment and clear pricing, usually within a day of your call — no pressure, no obligation.
We install established, code-compliant insulation products — including Owens Corning fiberglass — never off-brand or unrated material.
Our installations qualify toward Ontario's Home Renovation Savings Program — up to $10,000 in rebates on eligible upgrades. See details.
Government and utility rebate programs for home insulation upgrades change from time to time. Here's a look at what's currently available in Ontario.
Home Renovation Savings Program: combine two or more eligible upgrades (attic, walls, basement, air sealing) for a rebate up to $5,000 on a natural gas heated home, or up to $10,000 on an electrically heated home.
Individual rebate amounts vary by upgrade type and how much you improve your R-value — see the full breakdown on our Rebates page.
A simple, transparent process from the first call to the final check.
Reach us by phone or through the form. We discuss your project and your needs.
We send an inspector on-site for a detailed, no-obligation estimate.
Our team carries out the work cleanly and efficiently, to a high standard.
A full inspection to guarantee durable, properly installed insulation.
Straightforward answers to what homeowners ask us most.
Most attic insulation jobs are completed in a single day. Wall or basement work, or a full decontamination-and-reinsulation job, can take longer depending on the size of the space and condition of the existing insulation — we'll give you a clear timeline at your free estimate.
Yes. Insulation installation happens indoors (attic, walls, basement), so cold weather doesn't stop the work. Winter is actually a good time to book, since it's easier to feel where a home is losing heat and confirm the improvement right away.
No. Most jobs don't require you to leave. We section off the work area, protect your floors and belongings, and clean up when we're done.
It depends on your home type, heating source, and current insulation levels. We'll walk through what may apply during your free estimate — see our Rebates page for current program details and how the process works.
We handle decontamination and removal before installing new insulation, so you're not just covering up a problem. This is a common situation in older Toronto-area homes and we assess it as part of your free estimate.
Yes. Every installation is backed by our workmanship guarantee, and we carry full liability insurance on every job — see our Trust & Guarantees section for details.
Straightforward answers to the questions we hear most often.
What R-value means, why it matters for Ontario winters, and what most Toronto-area attics are missing.
Read more →Cold rooms, high bills, ice damming — the tell-tale signs that your insulation isn't doing its job.
Read more →A plain-language look at the current rebate programs for insulation upgrades in Ontario.
Read more →Our team is based in Toronto and serves the Greater Toronto Area. For any residential project elsewhere in Ontario, contact us to check availability in your area.
And everywhere else across the GTA for larger projects — contact us to check availability in your area.
See all areas we serve, including Hamilton, Burlington, Oakville and beyond →
