Cellulose or fibreglass?

Both work when installed to depth with the ceiling sealed underneath. Cellulose is denser and resists air movement better; fibreglass is lighter and settles less. We pick based on what is already up there and tell you why.

Do you insulate over an addition or a vaulted ceiling?

Those need looking at specifically rather than quoting an average depth. Shallow attics, cathedral sections and knee walls are usually the coldest rooms in an Sherbrooke house and the parts a general top-up misses.

How much insulation should my attic have?

It is settled depth and even coverage that decide performance, not the product name. We set depth markers before blowing so the result is measurable, and check the corners rather than just the area near the hatch.

Can I add over the old insulation?

Usually yes, if it is dry, even and uncontaminated. If it is wet, compacted, rodent-affected or hiding unsealed penetrations, removing it first is worth the cost, and we tell you which one we found.

Should I block the vents to stop drafts?

No. The attic is meant to run close to outdoor temperature so the roof deck stays cold. Blocking soffit vents causes exactly the ice damming people add insulation to prevent.

Can you blow insulation over my pot lights?

Only if they are rated for contact with insulation. Older fixtures need clearance and have to be boxed or replaced. Either way they are significant air leaks, so they get sealed first.

Attic Insulation Sherbrooke Edmonton | Attic Top-Up

Attic insulation in Sherbrooke: air seal first, then blow

The most common mistake in an Sherbrooke attic is blowing insulation over an unsealed ceiling. Warm moist air keeps rising through pot lights, top plates and the hatch, and it carries moisture into cold insulation where it condenses. We air-seal the penetrations first, then insulate.

Blown-in loose-fill to the depth your permit specifies
Air sealing at pot lights, top plates and the attic hatch
Depth markers left in place so the result is verifiable
Baffles kept clear so the soffit vents still breathe
Attic hatch insulated and weatherstripped
Existing insulation levelled before the top-up

Depth, and how to check we delivered it

Verifiable rather than assumed

Blown insulation settles, and depth is easy to claim and hard to check once the hatch is closed. We leave depth markers through the Sherbrooke attic so the installed depth can be read off later by anyone.

Even coverage

Depth is also an average — a deep drift in the middle and thin corners is not the same as an even blanket. Coverage to the edges is what actually reduces heat loss.

Sherbrooke drywall in context

About Sherbrooke

Sherbrooke dates to the City's earliest land boom in 1906.

What we see in Sherbrooke

In Sherbrooke the drywall work is plaster and lath repair, popcorn and stipple ceiling removal, careful patching into original surfaces. We confirm what your home actually needs on site, in writing, before anything starts.

Ventilation is not optional up there

Cold attic, by design

An Sherbrooke attic is meant to run close to outdoor temperature so the roof deck stays cold and snow does not melt and refreeze at the eaves.

The failure it prevents

Blocking soffit vents with insulation causes exactly the ice damming people add insulation to prevent. Air sealing the ceiling below and keeping the vents clear are two halves of the same job.

Sealing the ceiling below first

The order that matters

Warm moist air leaking from the house into a cold Sherbrooke attic is what frosts the underside of the roof deck and wets the insulation.

Where it leaks

The hatch, pot lights, bath fans, plumbing stacks and the top plates of interior walls. Blowing more insulation over unsealed penetrations buries the problem instead of fixing it, so sealing comes first.

Bathroom and kitchen fans venting into the attic

Found more often than you would think

In older Sherbrooke homes a bathroom fan is frequently ducted into the attic space rather than through the roof or soffit. It dumps warm wet air straight into the coldest part of the house.

Why it matters before insulating

Burying that under fresh loose-fill hides a moisture source that will show up as frost and staining. If we find one we tell you, because it needs correcting first — insulation on top of it makes it harder to reach and harder to diagnose.

Depth is the whole number

What you are buying

Attic performance is almost entirely a function of settled depth and even coverage. Two attics with the same product can perform very differently.

How we handle it

Depth markers are set before blowing so the result is measurable rather than asserted, and the Sherbrooke attic is checked at the corners rather than only where the hatch is. An attic that is deep in the middle and thin at the perimeter is the usual finding.

The attic hatch, which everybody forgets

A hole in the ceiling

The hatch in an Sherbrooke home is often an uninsulated panel sitting in a frame with no weatherstrip. It is a direct opening between the house and a space that is at outdoor temperature.

What we do

The hatch gets insulated on its back face and weatherstripped so it seals when closed. It is a small job that shows up disproportionately in comfort, and it is the first place we look when someone says the hallway is cold.

How it works

Simple, clean, on schedule — Attic Insulation in Sherbrooke Edmonton

Free quote

We come out to your Sherbrooke Edmonton property, take a real look at the attic insulation, and hand you a fixed price on the spot — no guessing, no vague ballpark. Every attic insulation quote in Sherbrooke Edmonton starts with an honest, on-site assessment.

Book a day

We pick a day that works for your schedule and show up on time, ready to start the attic insulation in Sherbrooke Edmonton. No back-and-forth rescheduling — once it's booked, our team is there.

The work

We keep the dust under control and protect your Sherbrooke Edmonton home while we finish the attic insulation to a clean, paint-ready standard. Floors covered, doors sealed off, and the site left tidy at the end of every day.

Walk it with you

We don't pack up till you've walked the finished attic insulation with us and you're happy with the result in Sherbrooke Edmonton. If anything needs a second look, we handle it before we call the job done.

Reviews

Rated by Edmonton Homeowners

★ ★ ★ ★ ★

Emplastrum Drywall is the attic insulation contractor Sherbrooke Edmonton trusts for repair, restoration and finishing — rated on Google by Edmonton homeowners.

Read the reviews, or leave your own after your attic insulation project in Sherbrooke Edmonton.

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FAQ — Attic Insulation Sherbrooke Edmonton

Attic Insulation Sherbrooke Edmonton: your questions answered

Cellulose or fibreglass?: Both work when installed to depth with the ceiling sealed underneath. Cellulose is denser and resists air movement better; fibreglass is lighter and settles less. We pick based on what is already up there and tell you why.
Do you insulate over an addition or a vaulted ceiling?: Those need looking at specifically rather than quoting an average depth. Shallow attics, cathedral sections and knee walls are usually the coldest rooms in an Sherbrooke house and the parts a general top-up misses.
How much insulation should my attic have?: It is settled depth and even coverage that decide performance, not the product name. We set depth markers before blowing so the result is measurable, and check the corners rather than just the area near the hatch.
Can I add over the old insulation?: Usually yes, if it is dry, even and uncontaminated. If it is wet, compacted, rodent-affected or hiding unsealed penetrations, removing it first is worth the cost, and we tell you which one we found.
Should I block the vents to stop drafts?: No. The attic is meant to run close to outdoor temperature so the roof deck stays cold. Blocking soffit vents causes exactly the ice damming people add insulation to prevent.
Can you blow insulation over my pot lights?: Only if they are rated for contact with insulation. Older fixtures need clearance and have to be boxed or replaced. Either way they are significant air leaks, so they get sealed first.

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Room length (ft)Room width (ft)Ceiling height (ft)Number of rooms Include ceilingSheet sizeCoats of paintCavity depthFraming spacingInsulation already there (in)Top up to (in)Stud spacingDoorsWindowsWaste allowance (%)

Estimate only — rounded up, based on standard coverage rates (drywall +10% waste; paint ~350 sq ft per gallon per coat; batt bundles by cavity depth, less a framing factor; studs at your chosen spacing plus waste). Product coverage varies by brand — confirm quantities before buying. Ask us about the right R-value for your project.

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Attic Insulation Sherbrooke Edmonton

Attic insulation in Sherbrooke: air seal first, then blow