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