Vapour Barrier Installation Laurier Heights Edmonton

Vapour barrier in Laurier Heights, sealed as a continuous plane

A vapour barrier only works as a continuous plane. In Laurier Heights the failures are almost never the sheet itself — they are the electrical boxes, the top and bottom plates, the window returns and the penetrations, where the poly is cut and not resealed.

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

Vapour Barrier Installation Laurier Heights Edmonton

What a vapour barrier is not

Laurier Heights drywall in context

Bathrooms, kitchens and the wet rooms

Where the barrier meets the ceiling and the floor

Why the warm side, and why only one

The parts an inspector looks at first

Warm side, always

Simple, clean, on schedule — Vapour Barrier Installation in Laurier Heights Edmonton

Vapour Barrier Installation Laurier Heights Edmonton: your questions answered

Can you install the barrier if someone else did the insulation?

Yes, but we check the insulation first. A barrier over a poorly filled cavity locks the problem in, and once the board is on neither can be corrected without opening the wall.

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.

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 Laurier Heights renovations quite often have both, and finding that before boarding is worth the hour.

What about outlets on exterior walls?

Each one is a deliberate hole. They need poly hats or airtight boxes sealed to the sheet. Taping poly to the front of an ordinary box does not last once board is fastened over it, and it is the most common leak we find.

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.

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.