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.

How much insulation should my St. Albert attic have?

The depth comes from what the code asks for on your permit, not from us. What we can tell you is the depth you have now, whether it is even, and whether the eaves and hatch are dealt with — those three often matter more than the last few inches.

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 St. Albert house and the parts a general top-up misses.

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.

I store things in my attic. Can I keep doing that?

Yes, but the plywood squashes the insulation beneath it to joist depth. Either the storage area gets raised on a platform above the finished depth, or it stays as a deliberately weaker zone kept small. We will not top up around it and pretend it is not there.

Can you just blow on top of what is already there?

Usually yes, if the existing insulation is dry, undisturbed and not contaminated. If it is wet or shows rodent activity it comes out first, because topping over that seals the problem in rather than fixing it.

Attic Insulation St. Albert | Attic Top-Up

Attic top-ups in St. Albert that hold their depth

The most common mistake in an St. Albert 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.

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

Topping up against removing and replacing

Usually a top-up is fine

Old fibreglass in an St. Albert attic that is dry and undisturbed can be levelled and topped up. It still insulates, and removing it is a large cost for a small gain.

When it has to come out

Insulation that is wet, contaminated, or full of rodent activity gets removed rather than buried, because topping over it seals the problem in. We will tell you which of the two you have after looking, not before.

St. Albert drywall in context

About St. Albert

Albert has a genuine mix of older and newer homes (about 54% pre-1991, 25% since 2000), so we see both plaster and stipple repair and new-build basement development.

What we see in St. Albert

In St. Albert the drywall work is both plaster and stipple repair and new-build basement development. We confirm what your home actually needs on site, in writing, before anything starts.

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 St. Albert 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.

Why air sealing comes before insulation in St. Albert

Insulation does not stop air

Batt and loose-fill slow heat transfer; neither stops air movement. In an St. Albert attic warm moist household air rises through pot lights, top plates and the hatch, passes straight through the insulation and condenses when it hits the cold deck.

What that looks like later

Frost on the underside of the sheathing in February, then staining on the ceiling in spring. Sealing the penetrations first is the difference between insulation that works and insulation that becomes the problem.

The eaves are where it goes thin

Geometry works against you

The roof meets the wall at the lowest point in the attic, so there is least room for insulation exactly where the wall below needs it most.

What it needs

Baffles that hold the insulation back from the soffit vents while still letting depth carry out over the wall plate. Skipping them in an St. Albert attic either blocks the venting or leaves a cold band above every exterior wall.

Cellulose against fibreglass in an St. Albert attic

Two products, different behaviour

Blown cellulose is denser, settles into gaps well and resists air movement through it better. Blown fibreglass is lighter, does not settle as much over time and is less prone to holding moisture.

How we choose

Either performs when installed to the right depth with the ceiling sealed underneath. We pick based on what is already up there and how the attic is built, and we tell you which we would use and why rather than defaulting to whichever is on the truck.

Insulating a St. Albert attic with knob-and-tube or old wiring

Stop and check first

Some older St. Albert homes still carry active knob-and-tube wiring in the attic. Burying it in insulation is not something we do — it needs an electrician to assess and usually to replace before the attic is filled.

Why we raise it

It is the kind of thing found halfway through a job, and it is far cheaper to find at the quote. If we see it, we tell you and we stop until it is dealt with.

How it works

Simple, clean, on schedule — Attic Insulation in St Albert

Free quote

We come out to your St Albert 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 St Albert 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 St Albert. No back-and-forth rescheduling — once it's booked, our team is there.

The work

We keep the dust under control and protect your St Albert 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 St Albert. If anything needs a second look, we handle it before we call the job done.

Reviews

Rated by St. Albert Homeowners

★ ★ ★ ★ ★

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

Read the reviews, or leave your own after your attic insulation project in St Albert.

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FAQ — Attic Insulation St. Albert

Attic Insulation St. Albert: your questions answered

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.
How much insulation should my St. Albert attic have?: The depth comes from what the code asks for on your permit, not from us. What we can tell you is the depth you have now, whether it is even, and whether the eaves and hatch are dealt with — those three often matter more than the last few inches.
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 St. Albert house and the parts a general top-up misses.
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.
I store things in my attic. Can I keep doing that?: Yes, but the plywood squashes the insulation beneath it to joist depth. Either the storage area gets raised on a platform above the finished depth, or it stays as a deliberately weaker zone kept small. We will not top up around it and pretend it is not there.
Can you just blow on top of what is already there?: Usually yes, if the existing insulation is dry, undisturbed and not contaminated. If it is wet or shows rodent activity it comes out first, because topping over that seals the problem in rather than fixing it.

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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 St. Albert

Attic top-ups in St. Albert that hold their depth