Commercial Roofing

We Provide Commercial Roofing Repairs & Installations in Ottawa

Commercial Roofing Services

Sanderson Roofing has completed countless Ottawa commercial roofing projects in its many years of business. Roofing products used include:

  • Built-up Roofing (conventional 4-ply hot asphalt & gravel) 
  • Cold applied Modified Bitumen
  • Torch applied Modified Bitumen
  • Mopped on Modified Bitumen
  • Single Ply Roofing

Cold Applied Modified Bitumen

The use of cold-applied roofing has become an attractive alternative to hot asphalt or open flame roofing methods. These roofs typically have a mechanically attached base sheet, and a second ply of modified bitumen membrane installed in bituminous adhesives or in a “peel and stick” method.

Torch Applied Modified Bitumen

Torch Applied Modified Bitumen roofing is another method of application, however because of the fire potential, it should only be applied by experienced roofers and should not be applied on older wooden structures.

Signs Of Flat Roof Damage

Surface Condition

Changing temperatures cause your roof to expand and contract which triggers movement in the roofing system. This eventually causes the membrane to age and crack, or even split.



Sun Damage

The sun's UV rays cause roofing to dry out and crack which results in general deterioration



Uplifting Fasteners

Over time, nails may begin to protrude through the top surface of the membrane causing leakage.

Sanderson Roofing Inspections

Over time, weather will cause flat roof aging and damage. Regular roof inspections and routine maintenance ensures that major damage is prevented. Sanderson performs the following tasks when completing a roofing inspection:

  • Ensure metal flashings are secure and caulked
  • Inspect roof for leaks, water damage and water ponding.
  • Inspect quality of existing roof membrane for deterioration and damage.
  • Condition of roof vents and other openings

Depending on the condition of your roof, Sanderson’s can advise you what is best for you and your property.

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