Attic Insulation Installation & Upgrade in Ottawa and Montreal
🏅 IICRC Certified 📅 19+ Years 🌡️ Insulated to R60 💰 Rebate Guidance
Upgrading your attic insulation to R60 is one of the highest-return improvements you can make on an Ottawa or Montreal home. We install blown-in cellulose, top up thin attics, air-seal the leaks first, and help you claim the rebates you qualify for. And because we inspect before we install, you never blow new insulation over a hidden problem.
Certified since 2005 with 15,000+ inspections behind us. Call 1-877-566-6653 or book a free virtual inspection to start.
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A properly insulated attic is the cheapest comfort upgrade most homes will ever get. Many older Ottawa and Montreal attics sit at R20 to R30, well below the R60 that Hydro-Quebec and Ontario programs now target, which means heat pours out through the ceiling all winter and creeps back in all summer. Topping up to R60 with blown-in cellulose closes that gap, and cellulose is treated to resist mold, made from recycled fibre, and blows cleanly into the tight corners batts never reach.
Before we install a thing, we look at what is already up there. Blowing new insulation over a compressed, damp, or contaminated base layer wastes the R-value you paid for and can seal a problem in. Because we are a mold remediation company first, that inspection is second nature to us, and most of the time the good news is simple: your existing insulation is fine and we just top it up.
When testing does turn up mold, rodent damage, or vermiculite, we handle that first through our attic insulation removal and attic mold removal teams, then come back and re-insulate to R60. We confirm what needs doing with an infrared insulation inspection, and financing is laid out on our financial assistance page. Ottawa and Montreal homeowners get one crew from inspection through installation.
Why homeowners choose us to insulate their attic
Most attic insulation jobs are a straightforward top-up to R60. What sets us apart is that we check the attic is sound before we install, so you are not paying to seal a hidden problem under fresh insulation.
We check before we install
A quick reading tells us whether we can top up what you have or need to address a problem first. No guessing, no upselling a full tear-out you do not need.
Certified, insured crews
IICRC-certified technicians who handle mold, vermiculite, and asbestos-suspect material to the right containment standard, not a general handyman.
Rebuilt to R60
We re-insulate to current attic targets, seal the air leaks that caused the moisture, and leave you with the R-value the label actually promises.
Verified clean at the end
The job is not done when the new insulation is in. It is done when a post-work check confirms the attic is clean and dry.
How we insulate your attic
Three stages. We inspect and test first, deal with anything that has to come out, then insulate to R60 and confirm the job.
Inspect and test
We look for moisture, mold, pest activity, and how the attic breathes. Infrared and moisture readings show where insulation is wet, compressed, or hiding a problem. Older homes get a vermiculite check for asbestos before anyone disturbs the material.
Clear anything that has to go
If the attic is clean, we skip straight to installing. If testing found mold, pests, or vermiculite, our insulation removal team takes it out under containment and dries the deck first, so the new layer goes onto a sound surface.
Re-insulate and verify
We air-seal the leaks that let warm, damp air into the attic, then re-insulate to R60 with blown-in cellulose or the right material for your build. A final check confirms the space is clean, dry, and performing.
Our insulation services
From a simple attic top-up to whole-home efficiency work, we install the right material for your build and scope it from what the inspection actually finds.
Insulation installation and upgrade
If the existing insulation is clean and simply thin, we top it up to R60. Blown-in cellulose fills the gaps and settled spots that batt alone misses, and we pair it with attic air sealing so the R-value holds instead of leaking out at the edges. A proper upgrade cuts drafts, evens out cold rooms, and takes load off the furnace through an Ottawa or Montreal winter.
Basement, wall and air-sealing work
The attic is where most homes lose the most heat, but it is not the only place. We insulate basements and rim joists, add wall insulation where the build allows, and air-seal the gaps around top plates, plumbing stacks, and attic hatches. Sealing first is what makes new insulation actually perform, rather than letting warm air slip past it and cause the condensation that starts moisture problems.
Contaminated attic? We clear it first
Sometimes the inspection finds rodent droppings, mold growth, or vermiculite that has to be dealt with before any new insulation goes in. When that happens, our attic insulation removal and attic mold removal teams handle the cleanup under containment, then we come back and insulate a clean, dry attic. One company, so nothing falls between the removal crew and the insulation crew.
Ready to upgrade your attic to R60?
A quick inspection settles the plan. We test the attic and tell you plainly whether it is a simple top-up or needs work first, then give you a same-day quote. Call 1-877-566-6653.
What attic insulation costs
The honest answer is that it depends on the attic. Square footage, how much old material has to come out, whether there is mold or asbestos-suspect vermiculite to handle, the target R-value, and how much air sealing the space needs all move the number. A straightforward top-up on a clean attic sits at the low end. A full contaminated tear-out with decontamination and a rebuild to R60 sits higher because it is really three jobs in one.
As a rough guide, attic insulation removal cost is usually quoted by the square foot, and a full attic insulation replacement on an average home falls into a wide range depending on the factors above. We do not post a fixed price because a number that fits one attic misleads the next homeowner. What you get instead is a same-day, itemized quote after the inspection, so you can see exactly what the removal, decontamination, and re-insulation each cost for your home. Financing options are on our financial assistance page.
Note: any cost figures are general estimate ranges for information only. Actual pricing depends on the size and condition of your attic and is confirmed in a written quote after inspection.
Choosing the right insulation for your attic
There is no single best insulation, only the right one for your attic’s shape, ventilation, and budget. Blown-in cellulose is our common choice for open attic floors because it fills gaps and settles into awkward spaces that batt leaves cold. Batt works where the framing is regular and accessible. Spray foam has a place for sealing rim joists and tricky transitions, though it is not usually the whole-attic answer people assume.
Whatever the material, the R-value only counts if the air sealing underneath it is done first. Insulation slows heat; it does not stop air movement. Seal the leaks, then insulate to R60, and the two work together instead of against each other.
Insulation rebates in Ontario
There’s good news for Ontario homeowners. Government funding is available if you are looking to improve your home’s energy efficiency. Below is a brief overview of the programs available in 2026.
Enbridge Home Renovation Savings Program
Ontario homeowners looking to upgrade their attic insulation can get a rebate through the Enbridge Home Renovation Savings program. The standalone attic insulation rebate does not require an energy assessment, and there are additional rebates available when you bundle other eligible upgrades such as basement or wall insulation, air sealing, windows and doors, or a furnace or heat pump.
Insulation-related upgrades that are eligible include:
- Attic insulation (standalone express rebate path, no energy audit required)
- Basement and exterior wall insulation
- Air sealing and draft proofing
Rebate amounts and eligibility are set by Enbridge and change periodically, so we confirm the current rebate for your home during your inspection. See full details about the Home Renovation Savings program.
Enbridge Home Winterproofing Program
With this program, income-qualified Ontario residents can have their home winterproofed at no cost. This includes installation of additional insulation and free draft proofing, which can meaningfully cut winter energy costs. The Home Winterproofing Program and the Energy Affordability Program now share one streamlined application.
The primary eligibility criteria state that applicants must have:
- A household income within the program limits
- A home that meets the program’s requirements
- An eligible utility account
Find out if you are eligible here.
Energy Affordability Program (Save on Energy)
Formerly the Home Assistance Program, the Energy Affordability Program provides income-qualified homeowners with free home upgrades including insulation installation, draft proofing and energy-efficient products. These upgrades help lower monthly electricity bills and improve year-round comfort.
Ontario Renovates
Ontario Renovates is a municipally administered program that helps low-to-moderate-income homeowners with essential home repairs and accessibility modifications, which can include insulation and energy-efficiency work. Eligibility and funding are set by your local service manager, so availability varies by municipality. Check with your city or region to see whether you qualify.
Program details and amounts are set by each provider and change over time. We confirm what applies to your home during your inspection. For financing options through Mold Busters, see our financial assistance page.
Attic insulation questions, answered
If the old insulation is clean and dry, no. Topping it up is cheaper and works fine. The removal case is about contamination, not age. When insulation is holding mold, water damage from a roof leak, or rodent droppings, leaving it in place traps the problem and drags down the performance of anything you add on top. In that situation removal is worth it, because you are not just adding R-value, you are clearing out an unhealthy, underperforming layer. The way to know which camp you are in is a quick inspection.
Blown-in insulation is vacuumed out with a large insulation removal machine and hose, which pulls the loose material into sealed bags. Batt insulation is rolled up and bagged by hand. When the material is contaminated with mold or droppings, the work is done under containment with the crew in protective gear so nothing spreads into the rest of the house. The bagged material is disposed of properly, and the attic deck is cleaned and dried before new insulation goes in. This is not a job to do with a shop vacuum on a Saturday, especially if there is any chance of asbestos in older insulation.
It can. The one to watch for is vermiculite, a pebbly, grey-brown loose-fill insulation often sold under the Zonolite name. A large share of it came from a mine that was contaminated with asbestos, so vermiculite in an attic is treated as asbestos-containing until testing proves otherwise. If your home was insulated before the 1990s and you see this material, do not disturb it. We check for vermiculite as part of the inspection and arrange testing before any removal, because disturbing asbestos fibres is the real hazard, not the material sitting undisturbed.
Cost depends far more on the attic’s condition than its square footage alone. A clean top-up to R60 sits at the low end. If old material has to be removed first, or there is mold or vermiculite to handle, the price rises because removal and decontamination are separate work from the re-insulation. Rather than quote a figure that would mislead you, we give an itemized, same-day estimate after inspecting the attic, so the removal, any decontamination, and the new insulation are each priced for your actual home. See our financial assistance page for financing options.
R-value measures how well insulation resists heat flow, and the higher the number the better it holds heat in winter and out in summer. R60 is the current attic target for our climate, and it works out to roughly 16 to 20 inches of blown-in insulation depending on the material. Many older Ottawa and Montreal homes were built to R20 or R30 and never upgraded, which is why their attics leak so much heat. We measure the existing depth during the inspection and tell you how much you need to add to reach R60.
Insulation is porous, so once mold has grown into it there is no reliable way to clean it in place. Hard surfaces like the roof sheathing and joists can be treated and saved, but contaminated batt or blown-in material is removed and replaced. The exception is light surface dust with no actual growth in the insulation itself, which the inspection sorts out. The rule of thumb: clean the structure, replace the insulation. Trying to salvage moldy insulation to save money almost always ends with a callback.
Free guide: industry-standard mold removal guidelines
The same reference our certified crews use on the job, including what to look for before insulation goes back in. Grab the free download from our resource library.
Get the free guideBook your attic inspection
Tell us what is happening in your attic, whether that is a musty smell, a cold room below, visible mold, or a top-up you have been meaning to do. We serve Ottawa, Montreal, and the surrounding regions with the same certified crew from inspection through to a verified-clean finish.
Call: 1-877-566-6653
Hours: Monday to Friday, 8:00 a.m. to 5:00 p.m.
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