Crew after removal and cleanup of old existing asphalt and gravel roof system

We work with the best systems

Norwin Roofing adheres to the highest standards for commercial roof installations for roof replacements as well as new full or partial roofs. Our strong track record with school divisions shows that we are the roofer of choice for projects when safety, reliability and quality are job one.

Choosing the right roofing system for your project can be challenging. Norwin Roofing offers professional and experienced inspection and consultation services for the four main roofing products we install and service:

  • 2-Ply SBS membrane roofs
  • 4-Play asphalt and gravel roofs
  • Repair TPO roofs
  • Repair EPDM single ply roof systems

2-ply SBS Membrane

A torch on roof, or a 2-ply SBS roof system, is one of the most popular roofing systems. Consisting of polyester or fiberglass reinforcing mat sandwiched between two layers of rubberized asphalt, two ply roof system are durable and relatively quick to install. However, proper installation by experienced roofing technicians is key as an improperly installed torch on roof can fail within the first few years. At Norwin Roofing we take measures to ensure that the quality of our 2-ply SBS roof systems stands up over time.

4-Ply Asphalt and Gravel

The 4-ply asphalt and gravel roof system consists of piles of felt embedded in asphalt and a flood coat with gravel at 400 lbs. per 100 sq. ft. These roofs are generally insulated from the roof deck up.

Single Ply Membrane (TPO/PVC)

TPO (thermoplastic polyolefin) single-ply roof systems represent a cost effective means of covering large areas of roof in a short period of time. As demand increases for energy effient roofing systems TPO single-ply membranes provide resistence to ultratiolet, ozone and chemical exposure. Heat welded single-ply membranes, are becoming an integral part of the commercial roofing market and advances in polymer technologies have made single-ply roof systems a more durable and cost effective solution for commercial building projects.

EPDM (Single Ply)

When time is a limitation within a roofing project, EPDM ( ethylene propylene diene terpolymer) single ply roofing systems offer a viable and effective roofing solution. Single-ply membranes come in various thicknesses and require different application knowledge and techniques. Norwin installers are trained in heat welding, rubber application (EPDM), and solvent application of one-ply roofing systems.

Annual Roof Inspection

A new roof installed by us should last approximately 20 to 25 years but regular, annual maintenance can extend that by five years or more. Unattended roofing systems can fail earlier in our extreme weather, sometimes in just ten years. It’s worth it to consider an annual roof inspection as part of your regular building maintenance. More >