Is a bathroom done differently?

Same rules, larger consequences. A bathroom pushes far more vapour into the wall, so a gap shows up faster. The fan housing and duct are sealed rather than trimmed around, and we check the fan vents outside rather than into the attic.

Why is there staining around my window reveals?

Usually the vapour barrier return at the window was torn or tucked rather than sealed. It is a cold junction, so condensation shows there first — often as staining or mould at the reveal.

Will this pass inspection?

It is built to what the code asks for on your permit, and we leave it visible and sequence to your inspection date rather than boarding ahead. If an inspector raises something, we want the note directly so it is fixed from the actual reason.

Can I add poly over insulation that already has a facing?

Usually no. Two retarders leave any moisture that gets in with no direction to dry. We check what is already in the wall before adding to it rather than assuming the cavity is bare.

Does it matter where the sheet meets the ceiling and floor?

It is the whole job. Left loose at the top or bottom plate, warm air simply goes over or under a perfectly installed sheet. The junction into a vaulted ceiling is the most commonly skipped and the wettest point in the room.

What if there is already a vapour barrier in the wall?

We tie into it, and we check whether there is a second one somewhere that would trap moisture between the two. Older Aldergrove renovations quite often have both, and finding that before boarding is worth the hour.

Vapour Barrier Installation Aldergrove Edmonton | 6 Mil Poly

Vapour barrier details in Aldergrove that pass inspection

Alberta winters put a large vapour drive from inside to outside, so the barrier belongs on the warm side of the insulation. Getting the position right matters as much as getting it sealed: a second barrier on the cold side traps moisture in the assembly with no way to dry.

Poly on the warm side of the insulation
Window and door returns detailed properly
Left ready for inspection before boarding
Electrical boxes poly-hatted and sealed
Seams lapped at framing and sealed, not just taped
Rim joists air-sealed before insulating

Laps, and the framing member behind them

Where sheets meet

A lap needs to land on solid framing and be sealed with acoustical sealant compressed between the layers, not taped in mid-air across a cavity.

Why it fails otherwise

An unsupported lap flexes with pressure changes and the seal works loose. In an Aldergrove build the sheets are planned so that laps fall on studs rather than wherever the roll ran out.

Aldergrove drywall in context

About Aldergrove

Planned in the 1970s, this area's multi-family dwellings on smaller lots were designed to help preserve agricultural land and conserve energy.

What we see in Aldergrove

In Aldergrove 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.

Bathrooms, kitchens and the wet rooms

More moisture, same rules

A Aldergrove bathroom pushes far more vapour into the wall than a bedroom. The barrier is not different, but the consequences of a gap are larger and show up faster.

Fans and penetrations

The fan housing, the duct and any pot lights all pierce the plane in the wettest room in the house. Those are sealed rather than trimmed around, and we check that the fan actually vents outside rather than into the attic.

Why the warm side, and why only one

Which way the moisture moves

Through an Aldergrove winter, warm humid indoor air pushes outward through the assembly. A vapour barrier on the warm side stops that moisture before it reaches a cold surface where it can condense.

Two barriers is worse than one

A second barrier on the cold side traps moisture between the two with no direction to dry. It is a genuine mistake we still find in renovated walls, and it is invisible until the damage shows.

Top plates, bottom plates and the perimeter

The edges do the leaking

The continuous joints at the top and bottom of an Aldergrove wall are longer than every box and lap put together, and they are the easiest to seal well or badly.

What good looks like

Sealant on the plate, poly laid into it and compressed by the framing or the board above, carried around corners rather than cut and butted at every change of direction.

What a vapour barrier is not

It is not an air barrier by itself

Poly slows vapour diffusion. Sealed properly it also slows air, and unsealed it does very little of either. The sealing is what turns a sheet of plastic into a working assembly.

It is not a damp-proofing fix

If a Aldergrove basement has water coming through the wall, vapour control is not the answer and installing it will hide the evidence. That is a drainage and waterproofing problem, and we will say so rather than board over it.

Warm side, always

The one rule everything else follows

The barrier goes on the heated side of the insulation. In an Aldergrove climate that is the room side of an exterior wall.

Why position decides everything

Put it on the cold side and you have placed a moisture stop exactly where indoor humidity will condense against it, inside the wall, where nothing dries and nothing is visible until the damage is done.

How it works

Simple, clean, on schedule — Vapour Barrier Installation in Aldergrove Edmonton

Free quote

We come out to your Aldergrove Edmonton property, take a real look at the vapour barrier installation, and hand you a fixed price on the spot — no guessing, no vague ballpark. Every vapour barrier installation quote in Aldergrove 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 vapour barrier installation in Aldergrove 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 Aldergrove Edmonton home while we finish the vapour barrier installation 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 vapour barrier installation with us and you're happy with the result in Aldergrove Edmonton. If anything needs a second look, we handle it before we call the job done.

Reviews

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Emplastrum Drywall is the vapour barrier installation contractor Aldergrove Edmonton trusts for repair, restoration and finishing — rated on Google by Edmonton homeowners.

Read the reviews, or leave your own after your vapour barrier installation project in Aldergrove Edmonton.

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FAQ — Vapour Barrier Installation Aldergrove Edmonton

Vapour Barrier Installation Aldergrove Edmonton: your questions answered

Is a bathroom done differently?: Same rules, larger consequences. A bathroom pushes far more vapour into the wall, so a gap shows up faster. The fan housing and duct are sealed rather than trimmed around, and we check the fan vents outside rather than into the attic.
Why is there staining around my window reveals?: Usually the vapour barrier return at the window was torn or tucked rather than sealed. It is a cold junction, so condensation shows there first — often as staining or mould at the reveal.
Will this pass inspection?: It is built to what the code asks for on your permit, and we leave it visible and sequence to your inspection date rather than boarding ahead. If an inspector raises something, we want the note directly so it is fixed from the actual reason.
Can I add poly over insulation that already has a facing?: Usually no. Two retarders leave any moisture that gets in with no direction to dry. We check what is already in the wall before adding to it rather than assuming the cavity is bare.
Does it matter where the sheet meets the ceiling and floor?: It is the whole job. Left loose at the top or bottom plate, warm air simply goes over or under a perfectly installed sheet. The junction into a vaulted ceiling is the most commonly skipped and the wettest point in the room.
What if there is already a vapour barrier in the wall?: We tie into it, and we check whether there is a second one somewhere that would trap moisture between the two. Older Aldergrove renovations quite often have both, and finding that before boarding is worth the hour.

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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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Vapour Barrier Installation Aldergrove Edmonton

Vapour barrier details in Aldergrove that pass inspection