Residential Roofing for BC Homes

It is possible on a single existing layer, and it is cheaper on the day. It also hides the deck, so rot and soft sheathing stay hidden, the second layer traps heat and ages faster, and flashings often get reused rather than replaced. We generally recommend a tear-off so the deck can be inspected and flashings addressed. A house with more than one layer already has to be stripped.

Yes, and doing them together is usually the right call. The two systems meet at a wall or a headwall flashing, and that joint is only watertight if the membrane is installed first and carried up behind the shingle course above it. Splitting the work between two contractors and two visits is how that lap ends up reversed.

Nobody knows for certain until the old roofing is off. Staining, sagging between rafters and daylight at sheathing joints predict most of it. Because deck condition is not fully visible beforehand, ask how replacement sheathing is handled in the quote so you know how any rot found on tear-off will be priced before the crew starts.

Yes. Standard practice is to tear off in sections small enough to dry in and cover the same day rather than leaving the deck open. Shingles also need warmth for the sealant strip to bond, so in cold weather tabs are hand-sealed with asphalt cement instead of waiting on spring sun, which protects against blow-off and keeps the material warranty intact. Torch-on membrane needs a dry, clean deck, so those sections are scheduled around the forecast. For the specifics of each system we install, see IKO shingle systems and Malarkey shingle systems.

We serve British Columbia, Alberta and Texas. Our core service area is Metro Vancouver, including West Vancouver, North Vancouver, Burnaby, and Langley.