We specialize in commercial and residential flat roofs.

At BestWest  Group, we specialize in the installation and replacement of commercial and residential flat roofs. Whether it’s a warehouse, factory, retail space, apartment building, or residential dwelling, we use only the most durable and time-tested roofing materials to ensure superior waterproofing and longevity—critical in Vancouver’s wet climate. 

For this reason, we exclusively install torch-on and SBS (Styrene-Butadiene-Styrene) membrane roofing systems, proven to offer exceptional durability and moisture protection. 

Our Flat Roofing & Waterproofing Applications 

✔ Commercial & Residential Flat Roofing – Designed for long-term performance in all weather conditions 
✔ Patio & Sundeck Waterproofing – Seamless protection to prevent leaks and moisture damage 
✔ Concrete & Parkade Waterproofing – Engineered solutions to protect against standing water and leaks 

Why We Choose Torch-On & SBS Membranes 

✔ Unmatched Durability – Properly installed SBS systems can last 30+ years 
✔ Superior Waterproofing – Multi-layer redundancy protects against rain, snow, and even standing water 
✔ Cost-Effective in the Long Run – Slightly higher initial cost, but lower maintenance and longer lifespan than other flat roofing options 
✔ Easy to Maintain & Repair – SBS membranes allow for simple repairs, extending the roof’s service life 

Conventional “water-proofing” applications include:

Vapour Barriers – Prevents moisture buildup within the roofing system 
Rigid Insulation Boards – Improves energy efficiency and temperature regulation 
Protection Boards – Adds durability and enhances system longevity 
SBS Membranes – Creates an impermeable waterproof barrier 
Slip Sheets & Protective Layers – Reduces friction between layers and adds additional protection 
Paving Stones – Often used for walkable roof surfaces and rooftop patios 
Green Roof Systems – Sustainable options that integrate vegetation for added insulation and environmental benefits 

Durable, Efficient, and Innovative Solutions 

When it comes to flat roofing, choosing the right products is crucial for longevity, energy efficiency, and weather protection. Whether you need waterproofing, insulation, or a green roofing solution, we offer a complete range of high-performance flat roof products to meet your specific needs. 

Industry-Leading Flat Roof Solutions 

We partner with SOPREMA, a trusted name in roofing materials, to provide top-tier waterproofing and insulation solutions for commercial and residential projects. As the only Canadian polyisocyanurate insulation manufacturer with an internal slope design department, SOPREMA ensures precision-engineered solutions tailored for commercial flat roofs.