Does my basement development in Rundle need a vapour barrier?

Yes in nearly every case. In this climate a Rundle basement exterior wall needs a barrier on the warm side of the insulation before boarding. What your particular Rundle assembly requires is established at the visit, not inferred from a drawing.

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

On the warm side, meaning the face turned toward the heated space in your Rundle home. Of all the details on a Rundle job this is the one most often got backwards, and boarding makes it permanent.

Do you seal the outlet boxes and vents in Rundle?

Yes. In a Rundle home each outlet, switch box, vent and pipe penetration is sealed on its own. In a Rundle home, poly draped over open boxes has the appearance of a finished job and none of the function.

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

Not always. Certain spray foam assemblies are their own barrier, and putting poly over one in a Rundle home can be a mistake. Product and thickness decide it, which is why we check at the Rundle property rather than assume.

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

Yes. On most Rundle jobs we do insulation, barrier and boarding together, so a single crew answers for what is behind the wall. We also cover Homestead, Moraine, Twinhills and every Calgary quadrant.

Call (403) 829-8702 Free Quote

Vapour Barrier Rundle

Vapour Barrier Installation Rundle Calgary

Poly Vapour Barrier Rundle

Basement Vapour Barrier Rundle

Vapour barrier installation in Rundle, Calgary — 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 Rundle, sealed before the board goes on

Nothing else in a Rundle build is this hidden and this unforgiving: after the drywall goes up, a tear in the sheet or an unsealed box is there permanently. In Rundle 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. Rundle is an established NE Calgary community of older homes where repair and stipple-ceiling work are common, 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 Rundle, Homestead, Moraine, Twinhills and every Calgary quadrant, 7 days a week.

Vapour barrier installation in Rundle basements and renovations
6 mil poly on the warm side of the insulation in Rundle
In a Rundle wall the seams are lapped onto framing and sealed rather than stapled and left
Outlet boxes, vents and plumbing penetrations sealed in Rundle
Rim joist and window returns detailed properly
Left exposed and inspection-ready at the Rundle property before boarding
Rundle coverage — we come to you

What affects the cost of vapour barrier installation in Rundle?

Area, penetrations and detailing

Vapour barrier cost in Rundle 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 Rundle 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. Rundle spans a range of build eras, so what is behind the wall differs street to street.

The side a vapour barrier belongs on in Rundle -- and why there is no choice about it

The warm side, always

In Rundle the barrier goes on the warm side of the insulation — the side facing into the heated Rundle room. It is what keeps household moisture out of the Rundle wall cavity, where it would condense on cold framing.

What goes wrong when it is reversed

Put the barrier on the cold side and it seals moisture into the assembly rather than out of it. It is one of the few mistakes in a Rundle wall that cannot be corrected without opening the wall back up, which is exactly why we check every Rundle job before anything is covered. Rundle spans a range of build eras, so what is behind the wall differs street to street.

How we install and seal it in Rundle

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 Rundle home. A Rundle wall with poly up and boxes still open behind it has no working vapour barrier -- and it is the most frequent thing we find on jobs someone else began.

Common vapour barrier situations in Rundle

In Rundle, by now most Rundle homes have been through at least one round of renovation, so we regularly patch drywall left rough behind old cabinetry or flooring trim, and skim whole rooms flat when owners are finally removing the original textured ceiling. Assessed on site, priced up front, and finished properly — every time.

Why Rundle 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 Rundle.

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 Rundle and every Calgary quadrant, 7 days a week. Quotes at your Rundle property are free, with a fixed price before work begins. Housing in Rundle is mixed, which is why we look before we quote rather than after.

How it works

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

Free quote

Before anything is priced we walk the vapour barrier installation with you at the Rundle Calgary property. You get a fixed figure that day, not a range that moves later.

Book a day

Scheduling is settled in one conversation. The vapour barrier installation start date in Rundle Calgary is confirmed and the team turns up on it.

The work

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

Reviews

Rated by Calgary Homeowners

★ ★ ★ ★ ★

Emplastrum Drywall does vapour barrier installation in Rundle Calgary — patches, restoration and paint-ready finishing. The reviews come from Calgary homeowners on Google, not from us.

Go through them, then judge us on your own Rundle Calgary project.

Read our reviews on Google

FAQ — Vapour Barrier Rundle

Vapour Barrier Rundle: your questions answered

Does my basement development in Rundle need a vapour barrier?: Yes in nearly every case. In this climate a Rundle basement exterior wall needs a barrier on the warm side of the insulation before boarding. What your particular Rundle assembly requires is established at the visit, not inferred from a drawing.
Which side of the insulation does the poly go on in a Rundle home?: On the warm side, meaning the face turned toward the heated space in your Rundle home. Of all the details on a Rundle job this is the one most often got backwards, and boarding makes it permanent.
Do you seal the outlet boxes and vents in Rundle?: Yes. In a Rundle home each outlet, switch box, vent and pipe penetration is sealed on its own. In a Rundle home, poly draped over open boxes has the appearance of a finished job and none of the function.
Do I still need a vapour barrier in Rundle if I have spray foam?: Not always. Certain spray foam assemblies are their own barrier, and putting poly over one in a Rundle home can be a mistake. Product and thickness decide it, which is why we check at the Rundle property rather than assume.
Can you do the vapour barrier and the drywall together in Rundle?: Yes. On most Rundle jobs we do insulation, barrier and boarding together, so a single crew answers for what is behind the wall. We also cover Homestead, Moraine, Twinhills and every Calgary quadrant.

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

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

All services↗

Drywall & Ceilings

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

Framing

Framing Rundle› Metal Stud Framing Rundle›

Insulation

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

Painting

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

Related areas

We also serve nearby

Other services in Calgary

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 →

One trusted team, the whole job

Poly-B repair, drywall & painting in Rundle Calgary

Poly first, then board — see Basement Drywall Rundle Calgary.

Insulation not in yet? Start at Insulation Installation Rundle Calgary.

The whole job in Rundle

What else we can do while we are in Rundle

From the Blog

Drywall Tips & Guides — Rundle Calgary

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.