Vapour Barrier Installation Aspen Gardens Edmonton

Vapour barrier in Aspen Gardens, sealed as a continuous plane

A vapour barrier only works as a continuous plane. In Aspen Gardens 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.

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

Vapour Barrier Installation Aspen Gardens Edmonton

Basement walls, where the rules change

Aspen Gardens drywall in context

Where the barrier meets the ceiling and the floor

Where poly is the wrong choice

Why the warm side, and why only one

Inspecting it before it is covered

Renovations, and meeting an existing barrier

Simple, clean, on schedule — Vapour Barrier Installation in Aspen Gardens Edmonton

Vapour Barrier Installation Aspen Gardens Edmonton: your questions answered

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.

Do the electrical boxes really need sealing?

They are the most common failure point. Every outlet in an exterior wall is a cut in the plane, and unsealed it is a direct path for moist air into the cavity at the coldest part of the wall.

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.

Is poly always the right answer?

No. Some assemblies, such as insulated concrete basements or walls with exterior rigid insulation, are designed to dry inward, and poly stops that. We look at the whole assembly rather than defaulting.

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.

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.