Vapour Barrier Mission

Vapour Barrier Mission

Poly Vapour Barrier Mission
Basement Vapour Barrier Mission

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

Get My Free Quote Call (403) 829-8702

Emplastrum Drywall 5-Star Google Reviews Trustpilot
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 Mission, sealed before the board goes on

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

A vapour barrier is one of the few things in a build that is completely hidden and completely unforgiving — once the drywall is on, a torn sheet or an unsealed outlet box stays that way for the life of the wall. In Mission 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. Mission is an older SW Calgary community where settling cracks, aging texture and the occasional plaster repair come up, so attic top-ups and wall insulation upgrades are common here alongside basement development, since original insulation levels are often below current standards. We cover Mission, Pine Creek, Alpine Park, Osprey Hill and every Calgary quadrant, 7 days a week.

Watch

Vapour Barrier Mission

Watch vapour barrier installation jobs in Mission Calgary on our YouTube channel

What affects the cost of vapour barrier installation in Mission?

Area, penetrations and detailing

Vapour barrier cost in Mission 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 Mission 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. Housing in Mission is mixed, which is why we look before we quote rather than after.

Which side the vapour barrier goes on, and why that is not optional

The warm side, always

In Mission the barrier goes on the warm side of the insulation — the side facing into the heated Mission room. That is what stops indoor moisture from travelling into the wall cavity and condensing when it reaches cold framing.

What goes wrong when it is reversed

A barrier installed on the cold side traps moisture inside the assembly instead of keeping it out. It is one of the few mistakes in a Mission wall that cannot be corrected without opening the wall back up, which is exactly why we check every Mission job before anything is covered. Housing in Mission is mixed, which is why we look before we quote rather than after.

How we install and seal it in Mission

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 Mission home. Poly on the walls with open boxes behind it is not a working vapour barrier, and it is the single most common thing we find on jobs that were started by someone else. In Mission we see everything from original finishes to recent renovations on the same block.

Common vapour barrier situations in Mission

Mission has some of the oldest housing stock we work in, so ceiling and cornice details here can be genuinely unusual — we match what is actually there rather than defaulting to a modern flat finish that would look out of place. That is the standard on every job here, big or small — on-site quote, fixed price.

Why Mission 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 Mission.

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 Mission and every Calgary quadrant, 7 days a week. Free on-site quotes and a fixed price before any work starts. Mission spans a range of build eras, so what is behind the wall differs street to street.
How it works

Simple, clean, on schedule — Vapour Barrier Installation in Mission Calgary

1

Free quote

Someone attends the Mission Calgary address, inspects what the vapour barrier installation actually involves, and gives you a firm number before leaving. Nothing is estimated from a photo.

2

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 Mission Calgary. No back-and-forth rescheduling.

3

The work

Floors get covered and doorways sealed before the vapour barrier installation begins. Your Mission Calgary home stays liveable while we work, and the site is tidied each day.

4

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 Mission Calgary.

Reviews

Rated by Calgary Homeowners

★ ★ ★ ★ ★

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

Read what other people said, then tell us how we did on your own vapour barrier installation job in Mission Calgary.

Read our reviews on Google
FAQ — Vapour Barrier Mission

Vapour Barrier Mission: your questions answered

Does my basement development in Mission need a vapour barrier?
Almost always, yes — exterior basement walls in our climate need a barrier on the warm side of the insulation before drywall. We confirm what your specific assembly needs on the site visit rather than guessing from the plan.
Which side of the insulation does the poly go on in a Mission home?
The warm side — the side facing into the heated room. It is the detail that gets reversed most often, and it is not correctable once the wall is boarded.
Do you seal the outlet boxes and vents in Mission?
Yes — every outlet, switch box, vent and pipe penetration gets sealed individually. Poly hung over open boxes looks finished and does not work.
Do I still need a vapour barrier in Mission if I have spray foam?
Sometimes not — some spray foam assemblies act as their own barrier, and adding poly over them can be the wrong call. It depends on the product and the thickness, so we confirm on site instead of assuming.
Can you do the vapour barrier and the drywall together in Mission?
Yes — insulation, vapour barrier and boarding as one job is the most common way we do it, and it means one crew is responsible for what ends up behind the wall. We also cover Pine Creek, Alpine Park, Osprey Hill and every Calgary quadrant.
Is it worth keeping the original plaster in our Mission character home, or should we just replace it with drywall?
Depends on the damage — small areas are usually cheaper and more true-to-character to repair in place; if a whole wall is failing, replacing with drywall and matching the surrounding texture is often the better long-term call. We'll tell you honestly which applies.
Emplastrum Drywall — Vapour Barrier Mission | Taping, Mudding, Ceilings & Painting

More from Emplastrum

Other Drywall Services in Mission Calgary — Taping, Mudding, Ceilings & Painting

All services↗ Drywall Repair & Painting› Popcorn Ceiling Removal & Painting› Interior Painting› Ceiling Painting› Basement Painting› Renovation Painting› Taping & Mudding› Drywall Repair› Popcorn Ceiling Removal› Water Damage Drywall› Basement Drywall› Drywall Installation› Texture Matching› Poly-B Repair› Renovation Drywall› Ceiling Repair› Skim Coating› Level 5 Finish› Garage Drywall› Soundproofing› Fire-Rated Drywall› New Construction Drywall› Legal Suite Drywall› Plaster Repair› Knockdown Ceiling Removal› Ceiling Texture› Drywall Boarding› Acoustical Ceiling Installation› Metal Stud Framing› Drywall Removal & Demolition› Insulation Installation› Drywall Patching› Level 4 Drywall Finish› Framing› Acoustic Insulation› Attic Insulation›
Related areas

We also serve nearby

Vapour Barrier Installation GlenbrookVapour Barrier Installation GlendaleVapour Barrier Installation HaysboroVapour Barrier Installation Alpine ParkVapour Barrier Installation AltadoreVapour Barrier Installation Aspen WoodsVapour Barrier Installation BankviewVapour Barrier Installation BayviewVapour Barrier Installation Bel-AireVapour Barrier Installation Belmont

Need Calgary’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 Calgary →
Also available in Mission

Other jobs we take on in Mission

Interior Painting MissionKnockdown Ceiling Removal Mission CalgaryLegal Suite Drywall Mission CalgaryLevel 4 Drywall Finish MissionLevel 5 Drywall Finish Mission CalgaryMetal Stud Framing MissionNew Construction Drywall Mission CalgaryPlaster Repair Mission CalgaryPoly-B Drywall Repair Mission CalgaryPopcorn Ceiling Removal & Painting MissionPopcorn Ceiling Removal MissionRenovation Drywall Mission
From the Blog

Drywall Tips & Guides — Mission Calgary

Get Your Free Drywall Quote
Tell us about your project — we’ll get right back to you, 7 days a week. Prefer to call? (403) 829-8702.
No obligation. We never share your information.
📞  Call (403) 829-8702 Free Quote
See our latest drywall projects & updates on FacebookFollow Emplastrum Drywall — Calgary, Airdrie, Cochrane, Chestermere & Okotoks Follow on Facebook