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When water gets past a failed membrane here, it doesn’t just pool—it soaks into the substructure, rotting the framing from the inside out. Left unchecked, that moisture invites mold and compromises the deck’s integrity.
A quality membrane also protects against UV breakdown and freeze-thaw cycles that can crack surfaces. It keeps your deck safe and functional year-round, allowing you to enjoy the views without worrying about damage.
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| Balcony Membrane Westwood Plateau Material and Thickness | Deck Condition Balcony Membrane Prices | Substrate Condition Balcony Membrane Prices | Replaced Flashing Balcony Membrane Prices | New Flashing Balcony Membrane Prices |
|---|---|---|---|---|
| Balcony Membrane Overlay System | CAD 16 – CAD 38 | CAD 18 – CAD 42 | CAD 20 – CAD 46 | CAD 22 – CAD 50 |
| Full Tear-Off to Slab | CAD 38 – CAD 78 | CAD 40 – CAD 82 | CAD 42 – CAD 88 | CAD 45 – CAD 95 |
| New Waterproof System Only | CAD 20 – CAD 45 | CAD 22 – CAD 48 | CAD 24 – CAD 52 | CAD 26 – CAD 56 |
| Membrane Overlay with Flashing | CAD 18 – CAD 41 | CAD 20 – CAD 45 | CAD 22 – CAD 49 | CAD 24 – CAD 53 |
| Subfloor Replacement Membrane System | CAD 42 – CAD 85 | CAD 45 – CAD 90 | CAD 48 – CAD 96 | CAD 50 – CAD 100 |
Protect Your Deck
A damaged balcony membrane allows water to seep through slowly. You may not notice it until stains appear on the ceiling below. By then, the plywood may be rotting, and repair costs can rise quickly. Sealing the surface prevents this hidden damage, keeping the structure sound and the space above usable during wet seasons.
We remove the old surface, check the substrate, and install a flexible membrane that bonds tightly around edges, drains, and penetrations. This waterproof layer directs rain and snowmelt off the deck instead of letting it pool. For more on how these systems perform across the Lower Mainland, see balcony membranes in Vancouver and what each material does best.
Westwood Plateau is higher up, so it gets more wind-driven rain and more freeze-thaw cycles than lower neighborhoods. Balconies here deal with extra stress from standing water that freezes overnight, widening cracks that were tiny the day before. A membrane designed for local weather prevents this cycle before it damages the decking.
Many homes in the area have large outdoor spaces overlooking the ridge, but the original waterproofing is often old and worn out. Replacing it with a modern, cold-flexible membrane resets the protection and preserves the view, along with the rooms below. Learn more about working on properties here on our Westwood Plateau page.
Balcony Membrane Installation Methods
In Westwood Plateau, we usually use liquid-applied polyurethane or reinforced PVC sheet membranes. The liquid systems cure into a seamless, flexible layer that fits the complex angles around custom railings and built-in planters found in this area. Sheet membranes, often heat-welded at the seams, provide a consistent thickness that works well on larger decks with fewer openings.
Installation starts by checking the plywood substrate for rot, especially near the ledger board where rain can gather. We then prime the deck and install a sloped mortar bed or tapered sleepers to create proper drainage before applying the membrane. Drains and scuppers get secondary clamping rings, and all vertical transitions are sealed with reinforced tape embedded into the base coat.
The cold-flexible nature of these membranes is important for this climate. They stay flexible well below freezing, allowing the material to stretch over small cracks that open during freeze-thaw cycles instead of tearing. We embed a polyester fleece into the wet base coat to add strength, bridging minor movements in the substrate without breaking the waterproof seal.
Balcony membranes in Westwood Plateau must manage moisture and thermal expansion due to the local climate. Proper integration with the building is crucial to prevent water leaks and protect the structure. Our installation methods ensure that the membrane sticks well to the substrate, creating a dependable barrier against moisture.
Careful attention to flashing and drainage is essential. By directing water away from key areas, we reduce the risk of damage to the structure below. Using tapered sleepers or mortar beds improves drainage, stopping water from pooling, which can cause damage over time.
Our balcony membrane installation focuses on long-term performance, making sure homes in Westwood Plateau stay dry and structurally sound, even in tough weather.
Balcony Membrane Noise Regulations
For balcony membrane work in Westwood Plateau, the City of Coquitlam’s Noise Control Bylaw No. 1233, 1982 limits construction noise to 7:00 a.m. to 8:00 p.m. Monday to Friday and 9:00 a.m. to 6:00 p.m. on Saturdays. Work outside these hours needs special permission from the City. Contractors working for profit cannot create noise on Sundays or holidays. However, not-for-profit homeowner work may be allowed during limited hours on those days. The City’s Good Neighbour Construction guidance also reinforces these hours for balcony membrane replacement or similar exterior renovations. Furthermore, any construction activity on residential properties must follow these hours, including balcony membrane work.
We recently completed a membrane replacement for a school in Westwood Plateau. The balcony surfaces on several classroom wings were old and allowed water to seep behind the cladding. This could have caused serious damage. We installed new, durable, watertight membranes, working on one building at a time. This way, we did not disrupt their class schedule. Now, the entire campus has a watertight surface that can handle our wet winters. Their maintenance team no longer worries about leaks.
Local Community Connections
We often do balcony membrane work on Westwood Plateau. It’s a regular part of our week. We get there easily using Highway 1 and Lougheed Highway, usually in about 35 to 45 minutes, passing through Coquitlam. While we are in the area, we often pick up materials from local suppliers like Windsor Plywood, Coquitlam and Choicelle Hardware Inc and Windsor Plywood Coquitlam. This helps us support the community.
Water can pool on a balcony in Westwood Plateau, leading to rot in the structure. We remove the old surface, inspect the substrate, and install a flexible membrane that bonds well and directs water away. We usually use liquid-applied polyurethane or reinforced PVC sheet membranes that remain flexible even in freezing temperatures. These membranes have sloped drainage and reinforced seams. Because Westwood Plateau is at a higher elevation, it experiences more wind-driven rain and freeze-thaw cycles, making a cold-flexible membrane essential. The City of Coquitlam restricts construction noise to 7 a.m. to 8 p.m. on weekdays and 9 a.m. to 6 p.m. on Saturdays. Project costs vary: a membrane overlay system may cost CAD 16 to 50, while a full tear-off to slab costs CAD 38 to 95. We can reach Westwood Plateau in about 35 to 45 minutes.
Find answers to common questions about our services, process, and craftsmanship.