Free On-Site QuotesWritten Pricing Before Work StartsResidential & Commercial
Attic Insulation Installation in Ottawa
Blown-in cellulose or fiberglass installed to the R-60 target for uninsulated or barely insulated Ottawa attics. Free on-site quotes, or call (343) 459-3623.
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First-time installs
For Attics With Little or No Existing Insulation
This service is for attics that are bare, have only an inch or two of old material, or were never properly insulated in the first place, common in older Ottawa homes and additions. We blow in cellulose or fiberglass across the entire attic floor to a measured depth, not a guessed one, and air-seal penetrations such as light fixtures, plumbing stacks, and the attic hatch before insulation goes down, since heat loss through gaps undermines even a full-depth install.
Cellulose or Fiberglass: Which Fits Your Attic
Both materials reach the same R-60 target. The right one depends on your attic's shape and ventilation.
Blown-In Cellulose or Fiberglass
Dense recycled fibre packs tightly around joists, wiring, and irregular framing. Loose fiberglass resists settling over the years and keeps its R-value.
Measured to R-60
Ontario's Building Code (SB-12) sets a minimum R-60 target for Ottawa attics.
Ventilation Checked First
We confirm soffit and ridge venting is clear before insulating.
Our Process
How We Install Attic Insulation
1
Attic inspection
We check current depth, framing, ventilation, and any air-sealing gaps before quoting.
2
Air sealing
Gaps around fixtures, stacks, and the attic hatch are sealed so heat cannot bypass the new insulation.
3
Baffles installed
Where needed, baffles keep soffit vents clear so air can still move once insulation is blown in.
4
Blown-in installation
Cellulose or fiberglass is blown across the full attic floor to the agreed depth.
Attic Insulation Installation Cost in Ottawa
This is the sourced range for blown-in attic insulation. Your exact price depends on attic size, access, and current depth, confirmed with a free on-site assessment.
Most popular
Blown-In Cellulose
$1.50-$3.00 per sq ft
Recycled fibre, dense fill
Good for irregular framing
Installed to R-60
Ottawa Insulation Experts provides professional attic insulation installation throughout Ottawa, Ontario. This service is for homeowners with a bare or barely insulated attic, the most common gap we find in older Ottawa homes, additions, and properties that have never had a proper top-up. Under-insulated attics let heat escape through the roof deck, which drives up furnace runtime and contributes to ice damming at the eaves in winter. We install blown-in cellulose or fiberglass across the full attic floor, air-seal penetrations first, and measure the finished depth against the Ontario Building Code's R-60 target for the Ottawa region.
Attic Insulation Installation FAQs
How do you know how much insulation depth my attic needs?
We measure current depth during the on-site assessment and compare it against the R-60 target Ontario's building code sets for attics in the Ottawa area, then quote the depth needed to close that gap.
Is my attic a good candidate for blown-in installation over a full rebuild?
Most bare or barely insulated attics with sound framing and clear ventilation are straightforward blown-in jobs. We flag anything unusual, such as moisture damage or blocked soffits, during the assessment before quoting.
Do you air-seal the attic before insulating?
Yes. We seal gaps around light fixtures, plumbing stacks, and the attic hatch first, since air leaks let heat bypass even a full-depth blown-in installation.
Will blown-in insulation block my soffit vents?
No. We install baffles at the eaves before blowing in insulation so soffit vents stay clear and the attic can still ventilate properly.
How long does a first-time attic insulation install take?
Most single-family attics are completed in a single day. Larger or harder-to-access attics may take longer, which we scope during the quote.
Ready to Insulate Your Attic Before Winter?
Free on-site quotes for attic insulation installation across Ottawa.
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