With over 10 years of experience working with these roof systems, CWS presently installs over 50 000 square feet of thermoplastic roof systems each year in Victoria BC.

TPO and PVC roof systems


     Thermoplastic Polyolefin (TPO) and Poly Vinyl Chloride (PVC) are thermoplastic roof systems that are both white and highly reflective roof membranes. These roofs provide excellent weathering characteristics and are highly resistant to ultraviolet light and most chemicals.

   The membranes have a reinforced scrim and are puncture and tear resistant. Thermoplastic roofs have outstanding seam strength due to the fact the sheets are welded together using hot air. These types of roof systems are lightweight and well suited for second generation (roof-over) applications.

There are three typical installation methods for TPO and PVC roof systems that provide lightweight and cost-effective solutions:


Mechanically Attached - The roof membrane is affixed to the structural deck with mechanical fastener.











Fully Adhered - The membrane is bonded directly to the affixed insulation board or other roofing membrane substrate.











Point-affixed - Ideal for retrofit installation over metal applications, plates are installed at set intervals and the roof membrane is welded directly to the plates. 












WARRANTY - 10, 15 and 20 year system warranty by manufacturer upon request.

Membrane warranty - Lifetime!



Our TPO & PVC projects



  • NZ Builders "Residential house" (Victoria, 2015) - 1500 sq.ft

  • NZ Builders "Residential house" (Victoria, 2015) - 2500 sq.ft

  • NZ Builders "Residential house" (Victoria, 2013) - 3600 sq.ft

  • Duncan Traveloge (Duncan, 2015)  - 12000 sq.ft

  • WAX Museum (Victoria, 2012) - 6000 sq.ft.

  • Rootcellar (Victoria, 2015) - 5000 sq.ft

  • Residential building (Salt Spring Island, 2015) - 4000 sq.ft

  • Residential building (Duncan, 2015) - 2000 sq.ft

  • ARC (Victoria, 2012) - 6000 sq. ft

  • Apartment buidlind (Victoria, 2013) 7500 sq ft.

  • Ware house Slegg Lumber (Langford 2014) 25000 sq ft.