The leaky condo crisis did not end in 2000. It just stopped being news. Across the Lower Mainland and Vancouver Island, hundreds of buildings put up between 1985 and 1998 still carry the original face-sealed stucco walls that started it. A rainscreen retrofit in Vancouver is what a strata corporation books when the depreciation report finally names the building envelope as the next major expense, usually 25 to 30 years after the building was framed.
We work on these buildings most weeks. The pattern is consistent. A unit owner reports a damp smell or a water stain. The strata council orders a building envelope inspection. The engineer’s report names the same three issues: no drainage cavity behind the stucco, deteriorated weather-resistant barrier, and sheathing damage across 30 to 60 percent of the wall area. The fix is not a patch. It is a full envelope rebuild from the studs out.
## Why face-sealed walls failed
For most of the 1990s, BC builders treated stucco like an impermeable shell. The assembly was building paper directly under the cladding, then a layer of acrylic or cementitious stucco bonded to it. The theory was that no water would ever pass the cladding. The reality, in a region that sees over 1,500 mm of rain a year, was that any breach (a hairline crack, a poorly sealed window flange, a missing kick-out flashing) let water enter, and once it entered, it had nowhere to go.
The wall could not drain. It could not dry. Sheathing rotted. Framing rotted. Insulation packed wet and stayed wet. The 1996 Barrett Commission documented the scale, but the buildings were already up. Owners discovered the problem one inspection at a time.
A modern rainscreen wall does the opposite. It accepts that some water will pass the cladding. It gives that water a drainage cavity to fall through and an exit at the bottom. A properly detailed weather-resistant barrier behind the cavity handles whatever moisture gets that far. Air flows behind the cladding, so anything wet dries within hours. The assembly is forgiving of small flashing imperfections in a way the old face-sealed wall never was.
## What a rainscreen retrofit actually involves
The work happens in phases. None of them is fast on a multi-family building.
**Phase 1, investigation.** The contractor and building envelope consultant open test cuts at the locations the engineer’s report flagged. Sheathing condition, flashing details, and window perimeters are documented. This phase takes one to three weeks on a typical four-story strata.
**Phase 2, full cladding removal.** Stucco comes off in panels. Underneath, the old building paper is stripped. Sheathing is inspected wall by wall. Anything punky or stained is cut out and replaced with new plywood or OSB. On most leaky-condo-era buildings we have worked on, 20 to 40 percent of the sheathing area needs replacement. Some need more.
**Phase 3, new envelope.** New weather-resistant barrier goes on, taped at every seam. Window flashings are rebuilt with proper sill pans, head flashing, and continuous tie-ins to the WRB. Furring strips, usually 19 mm pressure-treated vertical strapping, create the drainage and ventilation cavity. Insect screens go at the top and bottom of the cavity.
**Phase 4, new cladding.** Hardie panel, fiber cement plank, longboard composite, or a metal panel system goes on the strapping. The choice depends on the original architectural intent, strata budget, and what the engineer specifies. Re-flashing windows and penetrations is the slow part. The cladding itself is the fast part.
A four-story strata of 40 units typically runs six to ten months from first scaffolding to final inspection. Smaller buildings can be five to six months. Larger envelope projects with full window replacement push past a year.
## The cost reality nobody puts in the marketing
A rainscreen retrofit in Vancouver currently runs $80 to $160 per square foot of wall area, all-in. That number includes scaffolding, cladding removal, sheathing repair at typical levels, new envelope, new cladding, window perimeter rebuild, and final paint or finish. It does not include window replacement, balcony membrane work, or roof tie-in repairs, which often get bundled into the same special levy because the scaffolding is already up.
For a 40-unit strata with roughly 30,000 square feet of wall area, that is a project budget in the $2.5 to $5 million range. Special levies of $40,000 to $90,000 per unit are common. Strata councils that try to phase the work to soften the levy almost always pay more in total because scaffolding cycles twice and mobilization is paid twice.
## Insurance, warranties, and what is actually covered
Most strata insurance policies do not cover envelope deterioration. They cover sudden water damage events (a burst pipe, a roof leak from a storm) but the slow accumulated rot of a face-sealed wall is treated as a maintenance issue and excluded. Owners learn this the hard way when they read the policy after the engineer’s report.
What does help is the BC Homeowner Protection Act and, where applicable, the residual warranty on buildings that went through the original leaky-condo reconstruction program in the early 2000s. New rainscreen work itself carries a five-year material and labour warranty from a qualified contractor, with longer manufacturer warranties on most cladding systems. Hardie products typically come with a 30-year non-prorated finish warranty when installed by a certified contractor, which is a useful number to put in the AGM package when the council is explaining the levy.
## How to read a contractor’s proposal
Three things signal a rainscreen retrofit proposal worth trusting. The first is a line item for sheathing replacement at a realistic percentage. Anything under 10 percent on a 30-year-old building usually means the contractor is hoping for change orders later. The second is a detailed window perimeter scope. Windows are where most leaky-condo failures started, and any retrofit that does not properly rebuild those flashings is a retrofit that fails again. The third is named cladding products and named WRB tape, not generic descriptions.
What is missing also matters. A proposal with no scaffolding allowance, no construction waste removal line, or no provision for protecting landscaping is a proposal that will grow during the project. We see these often when an owner asks us for a second opinion.
It is also worth asking the contractor for their last three multi-family envelope references and calling them. Strata councils that win their levy vote often do so because the council president can stand at the AGM and say, “I spoke to the strata president at the last building this company finished.”
## Why MV Construction takes on these jobs
We are a full-service [exterior renovation](https://mvconstruction.ca/exterior/) contractor, fully licensed and WCB-insured, with 10+ years of multi-family envelope work across Greater Vancouver and Vancouver Island. Our strata project list runs from Coquitlam to West Vancouver to mid-Island, and the warranties we sign are backed by the corporate track record. Every project starts with a written scope and detailed estimate so the strata council and unit owners know exactly what the levy is paying for.
A leaky-condo-era building is not a small repair, and choosing the wrong contractor on a $3 million envelope job is how strata corporations end up in second lawsuits five years later. We would rather decline a job we cannot do at the standard than win it on price and disappoint the owners.
If your strata depreciation report is naming the envelope and your council is starting to interview contractors, [request a written estimate](https://mvconstruction.ca/contact-us/) or call 778-378-6393. We will visit the building, walk the elevations with the consultant if one is engaged, and put a real number on the work.