Retrofit & New Framing Free On-Site Quotes Residential & Light Commercial

Wall Insulation in Ottawa

Retrofit insulation into closed wall cavities, or full batt insulation in open framing before drywall goes up. Free on-site quotes, or call (343) 459-3623.

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Retrofit Wall Insulation (Closed Cavities)

For finished walls with drywall already up.

Small Access Holes

A hole is drilled per wall cavity from the exterior siding or interior drywall.

Dense-Packed Fill

Cellulose or fiberglass is blown in under pressure to fill the full cavity height.

Patched and Finished

Access holes are patched to match the surrounding wall once the cavity is confirmed.

New-Framing Wall Insulation

For open stud bays in new construction, additions, and renovations before drywall closes the wall.

Batts Cut to Framing

Fiberglass or mineral wool batts fitted to standard stud spacing, cut around wiring.

Vapour Barrier Placement

Faced batts or a separate poly vapour barrier are installed on the correct side of the wall.

Inspected Before Closing

Coverage is checked for gaps or compression while the framing is still open.

Which Approach Fits Your Wall

If the wall already has drywall up and finished surfaces, dense-pack retrofit insulation is the practical route, since it avoids demolition and patching an entire wall. If the wall is still open framing, whether in new construction, an addition, or mid-renovation, batt insulation is the more direct and often more cost-effective choice while the studs are exposed. We assess the wall on-site and recommend the method that fits the actual condition rather than defaulting to one approach.

Our Process

How We Install Wall Insulation

Wall assessment

We check whether the wall is open framing or finished drywall to determine the method.

Material selection

Cellulose or fiberglass for retrofit cavities, batts or mineral wool for open framing.

Installation

Dense-pack blown in through access holes, or batts cut and fitted to open stud bays.

Finish work

Access holes patched, or the wall left ready for drywall, depending on the method used.

Wall Insulation Pricing in Ottawa

There is no fixed per-square-foot rate for wall insulation, since retrofit and new-framing jobs have very different labour and access requirements. We confirm exact pricing with a free on-site or phone assessment based on the method and total wall area.

Ottawa Insulation Experts provides professional wall insulation throughout Ottawa, Ontario. This service covers two distinct situations: retrofitting insulation into a finished wall with drywall already up, and installing full batt insulation into open framing before drywall goes up on new construction, additions, or renovations. Homeowners with older, under-insulated exterior walls and builders framing new walls both need this service, just through different methods. We assess the wall condition on-site and recommend dense-pack cellulose or fiberglass for closed cavities, or cut-to-fit batts for open framing.

Wall Insulation FAQs

Can you insulate a wall without removing the drywall?

Yes, through dense-pack retrofit insulation blown in via small drilled access holes, which are patched afterward. This avoids opening the whole wall.

Is retrofit wall insulation as effective as insulating open framing?

Properly dense-packed retrofit insulation fills the cavity thoroughly and performs well, though open-framing installation gives more direct visual confirmation of full coverage before the wall closes.

How do I know if my walls are already insulated?

Many older Ottawa homes have partially insulated or uninsulated exterior walls. We can check cavity fill during an on-site assessment, sometimes using a small inspection hole, before recommending retrofit work.

What is the difference between wall insulation and attic insulation pricing?

Attic blown-in insulation has a sourced per-square-foot range because the work is consistent across attics. Wall insulation pricing varies more with access and method, so we quote it after an on-site look.

Do you insulate interior walls too, not just exterior walls?

Interior walls are sometimes insulated for sound control between rooms, using unfaced batts or mineral wool, which we can include as part of a renovation or addition scope.