Leaky Condo & Rainscreen Remediation on the North Shore

The North Shore's leaky-condo legacy

If your building or home went up on the North Shore between the mid-1980s and the late 1990s, there's a real chance it was built face-sealed — the stucco or cladding was meant to keep every drop of water out on its own, with no way for moisture to escape once it got in. In a dry climate that can work. On the wet coast, it doesn't.

When water found its way past the surface at a window, a joint, or a roofline with little or no overhang, it had nowhere to drain. It sat against the sheathing and framing and slowly rotted the wall from the inside. Across BC this became known as the leaky-condo crisis, and North Vancouver and West Vancouver were hit especially hard — heavy rain, dense tree cover, and a lot of 80s and 90s wood-frame construction add up to close to a worst case.

What rainscreen remediation actually is

Rainscreen remediation is the real fix, not a recoat. Painting or patching a failed face-sealed wall only hides the problem. Proper remediation means taking the wall back to sound structure and rebuilding it so it sheds water for good.

On a full building-envelope renovation we:

• Strip the failed cladding back to the sheathing so we can see exactly what we're dealing with
• Repair or replace any rotted sheathing, framing and structure we uncover
• Install a continuous weather-resistive barrier and proper window, deck and penetration flashings
• Build a drained and vented rainscreen cavity — a deliberate air gap behind the cladding so any water that gets past the surface drains down and dries out
• Re-clad with new cladding detailed to shed water instead of trapping it

The air gap is the whole point. A rainscreen wall assumes water will get in somewhere and gives it a fast way back out.

Signs your envelope is failing

Envelope failure is slow and usually hidden until it isn't. Watch for:

• Staining, dark streaks or bubbling paint on interior walls, especially below windows and at corners
• A musty smell, or soft, spongy spots in drywall or trim
• Cracked, bulging or delaminating stucco, or caulking that's pulling away everywhere
• Rusty fastener stains bleeding through the cladding
• Windows and doors that have started to stick or leak
• Trim, sills or deck ledgers you can push a screwdriver straight into

If you're seeing any of these, start with our free structural check so we can tell you whether it's surface-level or something deeper. Where water has clearly been getting in, our write-up on water-ingress and rot repair walks through what that trail of damage usually looks like.

Behind the envelope, we usually find rot — and sometimes structure

Here's the part a lot of coatings crews skip: by the time a face-sealed wall is failing, there is almost always rot behind it. You can't see it until the cladding comes off, and you can't rainscreen over it — new cladding on rotten sheathing just hides a problem that keeps growing.

We're a structural and envelope specialist, so when we open a wall we're equipped to deal with whatever's back there. That ranges from localized rot repair in sheathing and trim up to real structural repair when posts, beams, rim joists or framing have lost strength. One crew, one scope — we don't strip your wall and then hand you off when the job turns structural.

Strata buildings vs single-family homes

The leaky-condo legacy hit strata buildings hardest, and remediation on a strata is as much a process as a repair — depreciation reports, an engineer's envelope assessment, phasing the work around residents, and keeping owners informed. We're used to working alongside building-envelope consultants and property managers, and we detail our scope so a council and its members can actually follow where the money is going. There's more on that in our note on strata building-envelope renewal.

On a single-family home the engineering is simpler but the stakes are just as personal. The same principles apply — strip to sound structure, fix the rot, build a drained and vented wall — scaled to one house and one owner.

How we approach a remediation

Every building is different, but our approach is consistent:

• Assess — we look at the whole envelope, not just the obvious leak, and work out where water is getting in and where it's going.
• Expose — targeted openings (or a full strip on a larger scope) to confirm the extent of rot and any structural damage before we commit to a plan.
• Repair — rebuild sound sheathing, framing and structure so the rainscreen is going onto something solid.
• Rebuild the wall — barrier, flashings, drained and vented cavity, new cladding, all detailed to shed water.
• Walk it through with you — so you understand what failed, what we fixed, and why it won't come back the same way.

If you're on the North Shore and worried about your envelope, call us at (778) 882-8001 or get in touch and we'll take a look.

Frequently asked questions

What's the difference between leaky-condo remediation and just re-stuccoing?

Re-stuccoing or recoating only renews the outer surface of a face-sealed wall, so any water that gets past it still has nowhere to drain. True remediation strips the cladding, repairs the rot and structure behind it, and rebuilds the wall as a drained, vented rainscreen so water can escape. One hides the problem; the other fixes it.

How do I know if my home has a face-sealed wall or a rainscreen?

Most North Shore buildings from before the late 1990s with stucco or stucco-look cladding applied tight to the sheathing are face-sealed. Rainscreen walls became the standard after the code was updated following the leaky-condo crisis, so newer and already-remediated buildings usually have the drained cavity. If you're not sure, our structural check will tell you.

Will you find rot behind my cladding?

Usually, yes. By the time a face-sealed wall shows signs of failure, there is almost always rot in the sheathing or framing behind it. We don't know the full extent until the cladding comes off, which is why we expose and confirm the damage before committing to a final scope.

Can you handle it if the damage turns out to be structural?

Yes. We're a structural and envelope specialist, so if we open a wall and find failed framing, beams or rim joists, we repair that too. We don't strip your wall and then hand you off to another trade when the job gets structural.

Do you work on strata buildings as well as houses?

Both. We work alongside envelope consultants and property managers on strata remediations and handle single-family homes directly. The principles are the same at either scale: strip to sound structure, fix the rot, and build a drained and vented wall.