Does my basement development in Reunion need a vapour barrier?

Yes, essentially always -- our climate means a Reunion exterior basement wall gets a barrier on the warm side of the insulation before drywall goes on. The requirement for your Reunion assembly is confirmed in person on the visit, not guessed from the plan.

Which side of the insulation does the poly go on in a Reunion home?

The warm side of the assembly -- the one looking into the heated Reunion room. More than anything else on a Reunion job this gets reversed, and it cannot be corrected after boarding.

Do you seal the outlet boxes and vents in Reunion?

Yes -- each and every outlet, switch box, vent and pipe going through a Reunion wall is sealed on its own. Hanging poly over open boxes in Reunion framing gives you the look of a finished barrier without the performance.

Do I still need a vapour barrier in Reunion if I have spray foam?

Sometimes it should not go on at all -- some spray foam assemblies in Reunion homes are already the barrier, and poly over them is the wrong move. It varies with product and thickness, so we verify it on site in Reunion instead of assuming.

Can you do the vapour barrier and the drywall together in Reunion?

Yes -- running insulation, barrier and boarding as a single Reunion job is our usual approach, and it puts one crew on the hook for what ends up in the wall. We also cover Bayside, Kings Heights, Coopers Crossing and the Airdrie area.

Call (403) 829-8702 Free Quote

Vapour Barrier Reunion

Vapour Barrier Installation Reunion Airdrie

Poly Vapour Barrier Reunion

Basement Vapour Barrier Reunion

Vapour barrier installation in Reunion, Airdrie — 6 mil poly sealed over insulation before drywall, lapped at the seams and sealed at every penetration.

Emplastrum Drywall 5-Star Google Reviews

Trustpilot

Get Your Free Drywall Quote

Tell us about your project — we’ll get right back to you, 7 days a week.

Full Name / Company

Phone Number

Email Address

Area

Service Needed

I agree to be contacted by Emplastrum Drywall about my project by phone, text, or email.

No obligation. We never share your information.

Free on-site quotes7 days a weekNW Calgary · NE Calgary · SW Calgary · SE CalgaryLocally owned & operatedThe Go-To Drywall Contractor for Repair, Restoration & Finishing

Vapour barrier installation in Reunion, sealed before the board goes on

Few parts of a Reunion build are as completely concealed, or as unforgiving, as the vapour barrier; once boarded, a torn sheet or unsealed box is permanent. In Reunion we install and seal 6 mil poly over the insulation on the warm side, lapped at the seams and sealed at every penetration, before any board goes up. Reunion is a newer Airdrie community where settling cracks and finishing work are common, so basement development insulation is the main call here, with the main floors already insulated to a recent code. We cover Reunion and all of Airdrie, 7 days a week.

Vapour barrier installation in Reunion basements and renovations
6 mil poly on the warm side of the insulation in Reunion
On Reunion work the laps land on framing and get sealed, not just fastened
Outlet boxes, vents and plumbing penetrations sealed in Reunion
Rim joist and window returns detailed properly
Kept visible for inspection in the Reunion home ahead of the drywall stage
Reunion coverage — we come to you

What affects the cost of vapour barrier installation in Reunion?

Area, penetrations and detailing

Vapour barrier cost in Reunion depends on the wall and ceiling area being covered, the number of penetrations that need sealing — outlets, vents, pipes and light boxes — and how much detail work the rim joist and window returns need. We measure the space and give a fixed price before we start.

Usually priced with the insulation

Most Reunion vapour barrier work is quoted together with the insulation and the boarding that follows it, because it is the same crew and the same visit. Removal is a frequent Reunion request, and the age of the ceiling decides how that work is approached.

Vapour barrier placement in a Reunion home, and why it is not negotiable

The warm side, always

In Reunion the barrier goes on the warm side of the insulation — the side facing into the heated Reunion room. That is how indoor moisture is prevented from moving into a Reunion cavity and condensing on cold framing.

What goes wrong when it is reversed

Installed cold-side, the barrier traps moisture within the assembly rather than keeping it out. It is one of the few mistakes in a Reunion wall that cannot be corrected without opening the wall back up, which is exactly why we check every Reunion job before anything is covered. In Reunion basements the deciding detail is usually access: what has to stay reachable once the ceiling is closed up.

How we install and seal it in Reunion

Hung, lapped and sealed

We run the poly in the largest sheets the space allows to keep seams to a minimum, lap every seam over a stud or joist rather than in open cavity, and seal it — a stapled overlap on its own is not a seal.

The penetrations are the job

Outlet and switch boxes, bath fans, dryer vents, plumbing stacks and pot lights each get sealed individually in your Reunion home. Where poly is on the walls but the boxes behind are open, the barrier does not work; it is the commonest fault we find on part-finished Reunion jobs.

Common vapour barrier situations in Reunion

In Reunion, from the first patch to a finished basement, Reunion is one of the areas we serve every week. We take down dated popcorn and stipple ceilings and skim them to a smooth, modern flat finish. We board, tape, mud and finish basements to a smooth, paint-ready Level 4 or 5. One trusted team, tidy and dust-conscious in your home. One fixed price after an honest on-site look, and the job done right the first time.

Why Reunion homeowners have us do the vapour barrier

We are the ones boarding over it

As a drywall company we install the barrier the way we want to board over it, because we are the trade that has to live with what is behind the sheet in Reunion.

Left ready to be looked at

We leave the barrier complete and visible so it can be inspected before the drywall goes on — nothing gets covered until it has been seen.

Fixed price, same-day reply

We cover Reunion and all of Airdrie, 7 days a week. On-site quoting in Reunion costs nothing, and the price is set before anything starts. Basement development is common in Reunion, and a basement behaves differently from the rest of the house — cooler, damper, and less forgiving of a rushed finish.

How it works

Simple, clean, on schedule — Vapour Barrier Installation in Reunion Airdrie

Free quote

We come out to your Reunion Airdrie property, take a real look at the vapour barrier installation, and hand you a fixed price on the spot — no guessing, no vague ballpark.

Book a day

We book around you, not around our week. When the day comes the Reunion Airdrie crew is there at the agreed time, loaded for the vapour barrier installation.

The work

We keep the dust under control and protect your Reunion Airdrie home while we finish the vapour barrier installation to a clean, paint-ready standard.

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 Reunion Airdrie.

Reviews

Rated by Airdrie Homeowners

★ ★ ★ ★ ★

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

Have a look through them before you decide — and leave one yourself once your Reunion Airdrie job is done.

Read our reviews on Google

In Reunion

What vapour barrier installation usually involves in Reunion

In Reunion we see original finishes and recent renovations on the same block, so the vapour barrier installation is scoped per house, not per postcode.

Popcorn ceilings are still in place in parts of Reunion. Anything from that era is treated as unknown until its age is established, and handled accordingly.

Stipple ceilings turn up throughout Reunion, often with more than one layer from earlier repairs, and each layer changes how the new work has to be feathered.

FAQ — Vapour Barrier Reunion

Vapour Barrier Reunion: your questions answered

Does my basement development in Reunion need a vapour barrier?: Yes, essentially always -- our climate means a Reunion exterior basement wall gets a barrier on the warm side of the insulation before drywall goes on. The requirement for your Reunion assembly is confirmed in person on the visit, not guessed from the plan.
Which side of the insulation does the poly go on in a Reunion home?: The warm side of the assembly -- the one looking into the heated Reunion room. More than anything else on a Reunion job this gets reversed, and it cannot be corrected after boarding.
Do you seal the outlet boxes and vents in Reunion?: Yes -- each and every outlet, switch box, vent and pipe going through a Reunion wall is sealed on its own. Hanging poly over open boxes in Reunion framing gives you the look of a finished barrier without the performance.
Do I still need a vapour barrier in Reunion if I have spray foam?: Sometimes it should not go on at all -- some spray foam assemblies in Reunion homes are already the barrier, and poly over them is the wrong move. It varies with product and thickness, so we verify it on site in Reunion instead of assuming.
Can you do the vapour barrier and the drywall together in Reunion?: Yes -- running insulation, barrier and boarding as a single Reunion job is our usual approach, and it puts one crew on the hook for what ends up in the wall. We also cover Bayside, Kings Heights, Coopers Crossing and the Airdrie area.

Other Drywall Services in Reunion Airdrie — Taping, Mudding, Ceilings & Painting

We cover Reunion Airdrie as part of our wider Vapour Barrier Installation Airdrie service, across Airdrie — see every neighbourhood we work in, or talk to your drywall contractor in Airdrie.

All services↗

Drywall & Ceilings

Drywall Repair Reunion› Drywall Patching Reunion› Ceiling Repair Reunion› Water Damage Drywall Reunion› Poly-B Repair Reunion› Plaster Repair Reunion› Drywall Installation Reunion› Drywall Boarding Reunion› Basement Drywall Reunion› Renovation Drywall Reunion› New Construction Drywall Reunion› Legal Suite Drywall Reunion› Garage Drywall Reunion› Taping & Mudding Reunion› Level 4 Drywall Finish Reunion› Level 5 Finish Reunion› Skim Coating Reunion› Texture Matching Reunion› Popcorn Ceiling Removal Reunion› Knockdown Ceiling Removal Reunion› Ceiling Texture Reunion› Acoustical Ceiling Installation Reunion› Soundproofing Reunion› Fire-Rated Drywall Reunion› Drywall Removal & Demolition Reunion›

Framing

Framing Reunion› Metal Stud Framing Reunion›

Insulation

Insulation Installation Reunion› Batt Insulation Reunion› Loose Fill Insulation Reunion› Attic Insulation Reunion› Acoustic Insulation Reunion›

Painting

Interior Painting Reunion› Ceiling Painting Reunion› Basement Painting Reunion› Renovation Painting Reunion› Drywall Repair & Painting Reunion› Popcorn Ceiling Removal & Painting Reunion›

Related areas

We also serve nearby

Other services in Airdrie

Need Airdrie’s go-to drywall contractor for repair, restoration and finishing? One trusted team for boarding, taping, finishing, repairs & renovations — start to finish.

Your Drywall Contractor in Airdrie →

One trusted team, the whole job

Poly-B repair, drywall & painting in Reunion Airdrie

Poly first, then board — see Basement Drywall Reunion Airdrie.

Insulation not in yet? Start at Insulation Installation Reunion Airdrie.

Also available in Reunion

Other jobs we take on in Reunion

From the Blog

Drywall Tips & Guides — Reunion Airdrie

Basement drywall boarded and finished by Emplastrum Drywall in Calgary

August 6, 2026

Drywall in Calgary: The Complete 2026 Homeowner Guide

Drywall in Calgary covers board choice, finishing levels, repairs and paint. This guide walks a homeowner through every stage of drywall in Calgary.