Spray Foam Insulation Contractor in the Lower Mainland, BC
Western Insulation installs closed-cell and open-cell spray foam in homes and buildings across Langley, Metro Vancouver and the Fraser Valley. Spray foam insulates and air-seals in one step, which makes it the best choice for rim joists, crawlspace walls, vaulted ceilings and garages. Every install is covered with the thermal barrier BC code requires.
Insulation and Air Sealing in One Application
Spray foam expands to fill gaps, cracks and odd-shaped cavities, so it stops air leaks that batts and loose fill can’t. Closed-cell foam also resists moisture, which matters in damp Lower Mainland crawlspaces and basements.
Air sealing built in
Moisture resistance (closed-cell)
Where Spray Foam Makes the Biggest Difference
Where Spray Foam Makes the Biggest Difference
Rim joists
One of the leakiest spots in any house; foam seals and insulates it in one pass.
Crawlspaces and basements
Closed-cell foam on foundation walls keeps cold and damp out – pair it with a crawl space vapour barrier.
Vaulted and cathedral ceilings
Gets high R-value into shallow rafter spaces where batts don't fit.
Garages, bonus rooms and additions
Stops the cold floor above the garage and drafty additions.
Closed-Cell vs Open-Cell Spray Foam
We utilize industry-leading spray foam insulation products that deliver optimal protection for homes throughout the Lower Mainland, Metro Vancouver & Fraser Valley regions.
Insulation Options
Closed-Cell Spray Foam
Highest R-value per inch (R-6 to R-7) with moisture resistance and structural benefits
Open-Cell Spray Foam
Excellent sound dampening properties with more economical coverage for larger areas
Hybrid systems
A thin layer of foam to air-seal, topped with blown-in insulation or batts to reach full R-value at lower cost.
Targeted air sealing
Small amounts of foam at rim joists, top plates and penetrations.
Spray Foam Safety and Code Requirements in BC
Spray foam must be covered by an approved thermal barrier, such as half-inch drywall, in most occupied spaces under the BC Building Code. We plan the barrier with you before we spray. Read our spray foam thermal barrier guide for the details.
During spraying and curing, the work area must be ventilated and people and pets kept out. Re-entry time depends on the product – we give you the manufacturer’s re-occupancy time in writing before the job. Spray foam must be installed to CAN/ULC-S705.2 by trained applicators.
Why Homeowners Choose Western Insulation for Spray Foam
Established 1998 and based in Langley Township – local crews who know Lower Mainland homes
In-house installation crews
Rebate-ready invoices showing area, R-value before and after, and insulation type
Workmanship warranty
Before-and-after photos of the finished work
Free written quote
Spray Foam Insulation Cost in Langley and Metro Vancouver
Spray foam costs more than fibreglass because the material and equipment cost more, but you are paying for air sealing as well as insulation.
Job | Typical range | Notes |
Closed-cell spray foam | About $3–$5 per sq ft | Depends on thickness (R-value) and access |
Rim joists only | Quoted per job | Often combined with crawlspace work |
Thermal barrier (drywall) | Quoted separately | Required in most occupied spaces |
What Our Customers Say
Spray Foam Rebates (HPCN Contractor Required)
Spray foam qualifies for the BC Hydro and FortisBC Home Renovation Rebate when an HPCN member installs it. The rebate depends on where the foam goes and the R-value added.
Current BC Rebates Include
Basement and crawlspace walls, exterior wall cavities and wall sheathing: $0.09 × R × sq ft, up to $1,200 each
Attic: $0.02 × R × sq ft, up to $900; other areas: $0.07 × R × sq ft, up to $1,000
Bonus up to $2,000 for completing more than one upgrade
Related Services
Spray foam is often combined with basement and crawlspace insulation, roof insulation and thermal acoustic insulation, depending on where your home or building needs sealing.
Spray Foam Insulation Across Langley, Metro Vancouver and the Fraser Valley
Our crews are based in Langley Township and do most spray foam insulation work in Langley, Surrey, White Rock, Aldergrove, Abbotsford and Maple Ridge, with regular projects across the rest of Metro Vancouver and the Fraser Valley.
Reviews and Accreditation
Book a Free Spray Foam Assessment
Tell us where the cold or damp is coming from. We’ll recommend closed-cell, open-cell or a hybrid, and quote the thermal barrier at the same time.
Frequently Asked Questions
Is spray foam better than fibreglass insulation?
Spray foam insulates and air-seals in one step, and closed-cell foam resists moisture, so it outperforms fibreglass in rim joists, crawlspaces, vaulted ceilings and other tight or damp spaces. In open attics, blown-in fibreglass usually gives the same R-value for much less money. Many homes use both.
What is the difference between closed-cell and open-cell spray foam?
Closed-cell foam is dense, about R-6 per inch, and resists water, so it suits crawlspaces, basements and exterior walls. Open-cell foam is softer, about R-3.5 to R-3.7 per inch, cheaper per inch and good for sound dampening, but it absorbs water and should stay out of below-grade or wet areas.
Does spray foam need to be covered in BC?
Yes, in most occupied spaces. The BC Building Code generally requires spray foam to be protected by an approved thermal barrier, such as half-inch drywall, plywood or a tested coating. Some unoccupied attics and crawlspaces have different rules. We plan the barrier before we spray.
Is spray foam safe for my family?
Spray foam is safe once it has cured, when installed by trained applicators to CAN/ULC-S705.2 and covered with the right thermal barrier. During spraying, the area must be ventilated and occupied only by the crew. We give you the manufacturer’s re-occupancy time in writing before the job.
Does spray foam qualify for BC Hydro rebates?
Yes. When an HPCN contractor installs it, spray foam on basement or crawlspace walls, exterior walls or sheathing earns $0.09 × R-value × sq ft, up to $1,200 per area. Foam in the attic earns the attic rate of $0.02 × R × sq ft, up to $900.
How much does spray foam insulation cost?
Closed-cell spray foam typically costs about $3 to $5 per square foot in the Lower Mainland, depending on thickness and access. The thermal barrier, such as drywall, is usually extra. Rim joists and small areas are quoted per job. You get a written quote after a free assessment.
