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That cold-to-the-touch siding signals heat slipping out all winter. Your furnace works overtime to replace it, and rooms near outside walls never seem to warm up. Insulation puts a stop to that cycle.
This project also reinforces your home against the damp climate. It helps keep moisture from creeping into the wall sheathing and can reduce outside noise.
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| Exterior Insulation Coquitlam Material Type | Standalone Exterior Insulation Price | Combined Siding Insulation Price | Strapped Rainscreen Insulation Price |
|---|---|---|---|
| Standard Exterior Insulation | CAD 2,000 – CAD 4,000 | CAD 12,000 – CAD 25,000 | CAD 15,000 – CAD 35,000 |
| Exterior Spray Foam Insulation | CAD 3,000 – CAD 6,000 | CAD 15,000 – CAD 35,000 | CAD 15,000 – CAD 35,000 |
| Rigid Foam Board Insulation | CAD 2,000 – CAD 4,000 | CAD 12,000 – CAD 25,000 | CAD 15,000 – CAD 35,000 |
| Exterior Continuous Insulation | CAD 2,500 – CAD 5,000 | CAD 12,000 – CAD 25,000 | CAD 15,000 – CAD 35,000 |
| Exterior Wall Rigid Foam | CAD 2,000 – CAD 4,500 | CAD 12,000 – CAD 25,000 | CAD 15,000 – CAD 35,000 |
Benefits of Exterior Insulation
Cold siding means your walls are losing heat. Adding insulation outside helps stop heat loss through the studs and keeps the walls warm.
We focus on exterior insulation in Vancouver. We apply rigid foam or spray foam directly to the sheathing before putting on new siding or a rainscreen. A better building envelope lowers energy bills and removes cold spots.
Coquitlam has rainy winters and many older wood-frame homes, making exterior insulation very important. Without it, moisture can get behind the siding and cause rot.
In Coquitlam, many homes built before the 1990s have little wall insulation. A continuous layer of insulation protects the house from our wet climate and helps keep heating costs low all year.
Installation Techniques
In Coquitlam, we install exterior insulation using rigid mineral wool boards or closed-cell spray foam. We attach mineral wool boards to the sheathing with corrosion-resistant screws. Then, we tape the seams to make a continuous thermal break. Closed-cell spray foam is applied directly to the exterior wall surface. It bonds to the substrate and acts as a strong air and vapor barrier.
Given Coquitlam’s wet climate, we use a drained and ventilated rainscreen cavity. After securing the insulation, we fasten vertical strapping over it. This creates a drainage gap behind the cladding. The gap allows moisture that gets behind the siding to drain away and helps air movement for drying. This protects the insulation and wall assembly.
Exterior insulation moves the dew point to the outer face of the sheathing. This prevents winter condensation inside the wall assemblies in Coquitlam. By wrapping the studs in a continuous thermal layer, it nearly stops thermal bridging, which is a major cause of heat loss through wood framing.
A dedicated drainage plane is important in our climate. We install a weather-resistant barrier over the insulation, then a vented air gap. This gap allows any moisture that gets in to drain and evaporate. Flashings at all penetrations direct water away from the wall.
To handle local wind loads, we fasten the rainscreen strapping and cladding through the insulation into the building’s structural framing. We use stainless steel or coated fasteners to prevent corrosion in Coquitlam’s damp conditions.
Coquitlam exterior insulation rules
The City of Coquitlam Zoning Bylaw No. 3000, 1996 defines exterior cladding to include exterior insulation. It requires that any construction, reconstruction, alteration, or extension of a building’s exterior (including adding exterior insulation) on a residential lot must follow zoning rules for use, setbacks, height, lot coverage, and siting. This means exterior insulation work on a home in Coquitlam must be designed and installed so that the wall assembly, projections, and overall building meet the zone’s setback and height limits. Any satellite dishes, fences, or retaining walls related to the exterior work must also follow the detailed rules in Part 5 and the specific residential zone sections.
The City of Coquitlam Building Bylaw No. 3598, 2003 (enforced via Bylaw Notice Enforcement Bylaw No. 3749, 2006) states that exterior changes like adding or changing exterior insulation usually need a building permit. It is against the law to do work without the required permit, to work differently than approved plans, or to skip required inspections. For exterior insulation projects on homes in Coquitlam, the contractor must get the right building permit, follow approved drawings, call for inspections as needed, and not use the altered building before getting occupancy approvals. Failing to do so may lead to bylaw notices and fines under the Bylaw Notice Enforcement Bylaw.
The City of Coquitlam Noise Regulation Bylaw No. 1233, 1982 (enforced via Bylaw Notice Enforcement Bylaw No. 3749, 2006) bans construction noise that disturbs others. It has specific rules for general construction noise, weekend and holiday work, and pile driving. Exterior insulation work on homes in Coquitlam must be scheduled to meet the allowed hours and noise limits. Breaking these rules can result in a bylaw notice and fines for construction noise violations.
