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commercial Roofing

Commercial Roofing Repairs and Installations Services in Ottawa

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


Cold applied modified bitumen
Single ply roofing - EPDM, TPO, and PVC


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.

Signs of Flat Roof Damage

Check out the 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 and water damage
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 Roofing can advise you what is best for you and your property.


Call Sanderson Roofing for more information and to discuss your unique roofing needs. Request a free estimate!

Ottawa’s Trusted Roofing Contractor


Celebrating our 125th year in business, we take great pride in being the top choice for residential and commercial roofing services in the Ottawa region.

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