When a balcony leaks into the unit below in a BC strata, stop the water and tell the strata council and your insurance broker the same day. The strata usually repairs the balcony and insures the building. Its deductible, which the Province says can run from $100,000 to $750,000 or higher, can be recovered from an owner found responsible.
Who pays in the end turns on three things: how the balcony is shown on the strata plan, what your registered bylaws say, and where the water actually came from. This guide follows the Strata Property Act (current to October 13, 2026) and the Province of British Columbia's strata guidance, and it is general information, not legal advice. Valordek manufactures vinyl membranes for balconies, so the second half of the guide covers the part most strata guides skip: where balcony leaks start, and what a membrane warranty does and does not cover. For the repair project itself, see our guide to BC strata balcony waterproofing responsibility, and for the product, the Valordek vinyl decking overview.
What to do first when a balcony leaks into the unit below
The first hours matter more than the question of who pays, because water that keeps coming turns a ceiling stain into wet insulation, drywall and framing. Work through these steps in order, whether you live above or below.
- Limit the damage. Below, move belongings, catch drips and keep away from wet light fixtures and outlets. Above, clear any blocked balcony drain or scupper, and sweep away standing water or snow so the balcony can drain.
- Tell the strata and your broker the same day. The Province of BC advises owners and tenants to "immediately contact the insurance broker and the strata council" after damage. Put the notice to the council or property manager in writing.
- Record everything. Take dated photos and video of the ceiling, walls and balcony above, note the weather when it leaked, and keep damaged items until an adjuster has seen them.
- Let the strata investigate the source. Do not open the ceiling or start repairs on the balcony yourself. The strata normally repairs the balcony and arranges the investigation, and work done before the source is found can confuse both the repair and the insurance claim.
- Keep a cost log. Record cleanup, drying, temporary accommodation and replacement costs with receipts, because who pays for which item may be decided later.
Who repairs a leaking balcony in a BC strata?
In most BC stratas the strata corporation repairs a leaking balcony, because balconies are usually limited common property and the standard bylaws give the strata the duty to repair balconies and the building exterior. Section 72 of the Strata Property Act requires the strata corporation to "repair and maintain common property and common assets", and it allows the strata, by bylaw, to make an owner responsible for limited common property that owner uses.
The Schedule of Standard Bylaws draws the line. Standard bylaw 8 makes the strata repair limited common property when the work happens less than once a year, and, "no matter how often the repair or maintenance ordinarily occurs", the structure and exterior of a building and "chimneys, stairs, balconies and other things attached to the exterior of a building". Standard bylaw 2 leaves owners to repair and maintain limited common property they use, except for what bylaw 8 gives the strata.
Many stratas have replaced or amended the standard bylaws, for example to make owners keep balcony drains clear. Your registered bylaws, the strata plan and any alteration agreement for your balcony decide your case, which is why the first document to read is the bylaws your strata has filed, not a generic guide.
Who pays for the water damage in the unit below?
Damage to the building in the unit below is usually a claim on the strata's property insurance, and the strata pays the deductible as a common expense before deciding whether to recover it from an owner. Section 149 requires a strata corporation to insure common property, common assets and the buildings on the strata plan, for full replacement value against major perils.
Section 158 makes the deductible on a strata claim a common expense paid through strata fees, and it keeps the strata's ability to sue an owner to recover the deductible "if the owner is responsible for the loss or damage that gave rise to the claim". The Province of BC explains that responsibility "does not mean that the strata owner is at fault or negligent", using a dishwasher hose that breaks prematurely as its example. Bylaws can change how that works, which is another reason to read your own.
Each owner's own policy covers what the strata's policy does not. The Province says strata homeowners and investors are "strongly advised to purchase insurance", that their contents and similar expenses "are not covered by the strata corporation's insurance policy", and that owner insurance "can cover some or all of the cost of the strata insurance deductible". Section 161 of the Act allows owners to insure their own improvements, losses beyond the strata's cover and their own liability.
| Item | Usually handled by | Where it comes from |
|---|---|---|
| Repairing the balcony and its waterproofing | The strata corporation | Strata Property Act s. 72; standard bylaw 8 |
| Damage to the building in the unit below | The strata's property insurance | s. 149 |
| The insurance deductible | A common expense, recoverable from an owner responsible for the loss | s. 158 |
| Contents, owner upgrades and owner liability | Each owner's own policy | s. 161; Province of BC |
| A disagreement about any of these | A council hearing, then the Civil Resolution Tribunal | s. 34.1; s. 189.1 |
The deductible is the number that makes the question urgent. When a strata's deductible is in the hundreds of thousands, a leak that would once have been an insurance claim can land on one owner, and whether that owner's policy has deductible coverage decides whether it is affordable.
Where do balcony leaks into the unit below usually start?
Most balcony leaks start at a detail, not in the open field of the deck: the wall, the door, a railing post or a drain. A vinyl membrane such as Valordek is one continuous sheet bonded to the plywood with heat-welded seams, so water rarely gets through the middle of it. It gets in where the membrane stops, turns or is pierced.
- The wall. Where the membrane turns up the wall and meets the building envelope, reversed laps or a failed termination let water run behind it. Our guide to vinyl deck leaks at the wall covers the lap order.
- The door. The sill and door pan at a sliding door are the least visible joint on the balcony; see balcony leaks at the sliding door.
- Railing posts. Posts bolted through the finished membrane leave holes sealed only by sealant; see leaks around railing posts.
- Drains and scuppers. A blocked drain ponds water against every joint on the balcony, and a poorly sealed one lets it straight through.
Where the water appears below is not always where it got in, because it can travel along framing before it drips. Our guide to why balconies leak explains how to trace it, and if the leak has been running for a while, rot under the membrane is worth checking for before the balcony is resurfaced.
What if the membrane itself failed?
If the investigation finds the membrane itself defective, the manufacturer's warranty is the place to look, but it covers the product, not the installation. Valordek's warranty, as published on its warranty page, sets out the terms below.
| Valordek vinyl decking | |
|---|---|
| Waterproofing | 15-year waterproofing warranty on both product lines; covers manufacturing defects that cause leaks |
| Appearance | 5-year appearance warranty |
| Conditions | Valid only when a certified installer used Valordek-approved adhesives and system components |
| Not covered | Improper installation, abuse or misuse; natural fading; sub-structure issues; sealant failure that requires annual homeowner maintenance; installation workmanship, which is the independent contractor's liability |
| Temperature range | -40°C to 80°C |
| Maintenance | Inspect the sealant annually and reseal as needed; clean the deck regularly |
| How to claim | A written claim with your name, address and phone number, proof of purchase and a description of the problem, sent to Valordek, 17514 55B Avenue, Surrey, BC V3S 7G6 |
In practice, most balcony leaks into a unit below are a failed detail, an aged sealant joint or a blocked drain rather than a manufacturing defect, which is why the investigation matters before anyone talks about warranties.
What if the owners and the strata disagree?
An owner who disagrees with the strata starts with a council hearing, and only then can apply to the Civil Resolution Tribunal. Under section 34.1, an owner or tenant can ask in writing for a hearing at a council meeting; the council must hold it within 4 weeks, and when the owner is seeking a decision, give it in writing within one week after the hearing.
Section 189.1 requires an owner or tenant to have requested that hearing before asking the Civil Resolution Tribunal to resolve a strata dispute, unless the tribunal directs otherwise. The tribunal decides many strata disputes, and its published decisions show how often these cases turn on where the water came from and on the exact wording of the bylaws. For anything beyond general information, talk to a strata lawyer.
How can a strata prevent the next leak?
The leaks that reach the unit below are usually the ones nobody inspected, so a yearly check of the balcony's joints is the cheapest protection a strata has. Valordek's care guide asks for an annual inspection of the sealant wherever the membrane meets the building, posts, columns, vents and drains, and of the seams.
- Inspect every year, and record what was checked, so a later dispute has evidence.
- Keep drains clear, and make clear in the bylaws or rules who does it.
- Plan replacement before failure. A depreciation report that names balcony membranes gives the strata a timeline; our guide to what to do when the depreciation report flags balcony membranes covers the next steps.
- Use a certified installer with approved components, so a future membrane defect is covered by the warranty and the workmanship is the installer's responsibility.
When a balcony is due for new waterproofing, a Valordek dealer can assess the balcony membrane and details and quote the work for the strata.
Frequently asked questions
Does strata insurance cover water damage?
Usually, for the building. Section 149 of the Strata Property Act requires a BC strata to insure common property, common assets and the buildings on the strata plan, for full replacement value against major perils. Owners' contents and their own upgrades are not covered by the strata's policy and need the owner's own insurance.
Who pays the strata insurance deductible?
The strata pays it first: section 158 makes the deductible a common expense paid through strata fees. The strata can then recover it from an owner who is responsible for the loss, and the Province of BC notes that being responsible does not have to mean being at fault or negligent.
Does insurance cover balcony leaks?
Policies often treat sudden water damage differently from wear and gradual leakage. In a BC strata, the strata's property insurance responds to damage to the building, subject to its deductible, while repairing the failed balcony membrane is usually a strata maintenance cost. The wording of each policy decides, so ask your broker.
Is a leaking balcony a structural defect?
Not necessarily. A vinyl membrane such as Valordek is one continuous sheet with heat-welded seams, so most leaks start at details: the wall, the door, railing posts and drains. Those are waterproofing failures, but water that gets through can rot plywood and framing, so the investigation should check the structure too.
How do you stop a balcony from leaking?
Find where the water gets in first. Clear blocked drains and remove standing water as a temporary step, then have the strata's contractor inspect the membrane, seams and every detail. A lasting fix repairs or replaces the failed detail or membrane, using Valordek-approved components if a Valordek warranty is to apply.
Who pays for a balcony leak, the owner or the strata?
In most BC stratas, the strata repairs the balcony and its waterproofing under the standard bylaws, but your registered bylaws, the strata plan and where the water came from decide each case.
