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Even with the thermostat cranked, a draft lingers near the windows on cold nights. Heat escapes through the walls, causing energy bills to rise.
Proper insulation protects your home from moisture damage. A continuous layer on the exterior enhances durability and comfort without major renovations.
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| Exterior Insulation Westwood Plateau Insulation Material Type | Per Square Foot Price | Per Square Metre Price | 100mm Thickness Price | 1200mm Thickness Price |
|---|---|---|---|---|
| Exterior Wall Insulation | CAD 8 – CAD 20 | CAD 90 – CAD 220 | CAD 8 – CAD 20 | CAD 8 – CAD 20 |
| Mineral Wool Insulation | CAD 8 – CAD 20 | CAD 90 – CAD 220 | CAD 8 – CAD 20 | CAD 8 – CAD 20 |
| Foam Board Insulation | CAD 7 – CAD 13 | CAD 80 – CAD 140 | CAD 7 – CAD 13 | CAD 7 – CAD 13 |
| Spray Polyurethane Foam | CAD 12 – CAD 22 | CAD 130 – CAD 240 | CAD 12 – CAD 22 | CAD 12 – CAD 22 |
| Rock Wool Insulation | CAD 8 – CAD 20 | CAD 90 – CAD 220 | CAD 8 – CAD 20 | CAD 8 – CAD 20 |
Effective Exterior Insulation
Cold air finds every gap in your walls. Adding exterior insulation wraps your home in a thermal blanket that blocks drafts at the source.
We install rigid foam boards over your existing sheathing and cover them with new siding. This creates a tight building envelope that keeps warm air in and cold air out without affecting your interior walls.
Homes here face stronger winds and colder nights than those in the valley. This makes a well-insulated exterior essential for comfort on Westwood Plateau.
Many houses in this area were built in the 1990s with standard batt insulation that has settled over time. Continuous exterior insulation fills those weak points and stops wind-driven moisture from getting behind your siding.
Insulation Installation Methods
Rigid foam boards, like EPS, XPS, or mineral wool, are placed directly over the existing sheathing on homes in Westwood Plateau. Each panel is secured with long screws and washers through vertical furring strips, which lock the insulation into the studs. This setup creates a drained space behind the siding that safely channels out moisture.
The seams between the boards are staggered and sealed with high-bond tape to prevent air from getting in. Taping around windows and doors connects the insulation with the flashing, blocking wind-driven moisture. Together, the furring strips and taped seams create a tight barrier that stops drafts, which is important in this high area.
In Westwood Plateau, it is important to control condensation inside the walls. Exterior insulation moves the dew point to the outside of the sheathing. This stops moisture from indoor air from cooling against cold studs and condensing. This helps reduce dampness that can damage the sheathing.
A continuous layer of insulation wraps around the whole structure to reduce thermal bridging through the wood framing. Also, the ventilated rain screen cavity helps release any moisture and balances pressure, which lowers the force that pushes rain into the cladding. These methods keep homes in Westwood Plateau dry and strong.
Permit requirements for insulation
For exterior insulation work on homes in Westwood Plateau, construction-related noise is allowed only between 7:00 a.m. and 8:00 p.m. Monday to Friday, and between 9:00 a.m. and 6:00 p.m. on Saturdays. Noisy construction for profit is generally not allowed on Sundays and statutory holidays unless special permission is obtained from the City. Under Coquitlam’s Building Bylaw, building permits are usually required for construction, alteration, or reconstruction work on homes. Inspections are needed after insulation, air barriers, and vapour barriers are installed but before they are covered. Exterior insulation retrofits that change the building envelope or cladding in Westwood Plateau will typically need a building permit and inspection before the insulation is concealed. Coquitlam defines exterior cladding to include exterior insulation, vapour barriers, and vented air cavities. Exterior sheathing includes solid materials plus embedded or exterior insulation. For homes in Westwood Plateau, any exterior insulation installed as part of cladding or sheathing must meet these standards and be shown on permit plans submitted to the Planning Director before the Building Inspector can issue a building permit.