Attic Insulation Top-Up
An attic insulation top-up builds a new layer of loose fill over the old one, bringing a shallow attic floor up to R-60.
How a top-up worksAttic Insulation Questions From Caledon Homeowners
Ontario attic rebates up to $1,250 may applyCaledon homeowners ask us these attic insulation questions most often, from century farmhouses to new streets in Bolton.
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Frequently Asked Questions
Cellulose attic insulation is usually the better choice. It is heavier per cubic foot, it fills the irregular bays of an older attic well, and it slows air drifting through the layer. Blown fiberglass weighs less and suits ceilings that cannot carry much load.
Leave it untouched until a lab has tested a sample. When asbestos is found, an abatement contractor clears the vermiculite, and attic insulation is installed afterward.
Air leaks, not thin attic insulation, are the most common cause. Heated air slips out around light fixtures, pipes and wall tops, and loose fill does nothing to stop air that is moving. Thin or settled fill makes it worse.
A house with about 1,200 square feet of attic usually takes one day, sealing and baffles included. Older homes that need more sealing can take two.
Yes, often the largest difference of all. Old farmhouses can leak several times more air through the attic than newer houses, especially where balloon-framed walls open into it, and closing those paths brings the biggest gain in comfort.
Heat leaking up from the house warms the roof and melts the snow, which freezes again over the colder eaves. Sealing, more attic insulation and open soffit vents keep the whole roof cold.
In many cases it can. Cellulose can be dense-packed into each rafter space through coin-sized holes that get patched later, and the free inspection tells us whether the spaces are clear enough.
It rests on attic floor area, existing depth, the material and any removal. Typical Ontario ranges are on our cost page, and your written estimate gives the exact number.
Yes. Without an assessment, Home Renovation Savings pays up to $1,250 for raising an attic from R-12 or lower to R-50, but only on jobs by installers on its roster, and that roster is no longer open. Its assessment route leaves the choice of contractor to you. As of our October 2026 check, the program is currently scheduled to end on November 30, 2026, and the full details are on our attic insulation rebate page.
Yes. Our crews cover all of Caledon, including Caledon East, Caledon Village, Inglewood, Alton, Palgrave, Mono Mills, Cheltenham and Belfountain.
Services
Read About Each Attic Service
Each page covers how the work is done and an Ontario price range.
Blown-In Cellulose Insulation
Blown-in cellulose insulation lays one continuous blanket across the attic floor and reaches into every corner, in new and old houses alike.
How cellulose is blown in
Century Home Attic Insulation
Century home attic insulation starts with a longer inspection, because a house past its hundredth birthday hides problems a newer home never has.
Details for older homes
Attic Insulation Removal
Attic insulation removal clears away fill that is soaked, mouldy, flattened or fouled by mice, squirrels or raccoons, leaving a clean attic ready for sealing and new material.
How old fill is removed
Attic Air Sealing
Attic air sealing plugs the small openings where heated room air escapes upward through the ceiling, and it opens every job we take on.
Where the leaks get sealed
Ice Dam Prevention
Ice dam prevention is most effective from inside the attic, where the goal is a roof deck too cold to melt the snow sitting on it.
How ice dams are stopped
Cathedral Ceiling Insulation
Cathedral ceiling insulation goes into the thin space above an angled ceiling, where there is no open attic floor to work from.
Options for sloped ceilings
Attic Insulation Rebate
Ontario's attic insulation rebate is one stream of Home Renovation Savings, a program Save on Energy and Enbridge Gas run together, and it refunds a share of the bill once an attic reaches R-50 or more.
Rebate routes and amounts
Attic Insulation Cost
Attic insulation cost comes down to four things: attic floor area, the depth already there, the material chosen and whether old insulation must come out first.
Price ranges by job
Free Estimate
Describe Your House And Attic
Mention when the house was built and which rooms run cold, and we will arrive prepared. Our phone line is +1 (289) 210-8354.
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