How We Became a Trusted Roofing Company in Ottawa

Value, Quality, and Service

Our experienced estimators carefully evaluate your needs to determine the most cost-effective and suitable solutions for your roofing requirements. They are paid by salary not commission, so there is no pressure to “upsell” customers beyond their needs.

We carefully select our manufacturers and suppliers to obtain the most durable, cost-effective and attractive materials. Then, our knowledgeable and experienced installers build the roof to the highest standards in the industry.

Our customers are our most important asset and are always served promptly and courteously. Sanderson Roofs come with a comprehensive written warranty and we stand behind each and every one! Read our Code of Ethics.

A Part of the Community

We are one of the roofing companies who believe it is important for every business to give back to the community in which it operates. As a result we have supported, through money or services, the following charities or non-profits:

  • The Easter Seal Society
  • The Royal Ottawa Hospital
  • The United Way
  • The Shepherds of Good Hope
  • The Ottawa West Golden Knight Hockey Team
  • Habitat for Humanity
  • The Canadian Institute for the Blind
  • The Ontario Police Association
  • The Jewish Youth Library 
  • The Union Mission for Men
  • Merrywood Camp for Disabled Children
  • The Rotary Home for Children
  • The Canadian Council for the Blind
  • The Cumberland Grads Hockey Team
  • Coro Vivo Choir
  • National Arts Center Foundation

Our History


In 1895 John D. Sanderson was working as a shingler and lather for another roofing company when he decided to strike out on his own and form his own firm. At first it was small – just himself and another man. Gradually he expanded his services and staff to include flat roofing and sheet metal work. Unfortunately in 1908, while still in his thirties, he became seriously ill and died.


His son Herbert, still a teenager at the time, took over the running of the business and managed it through the great Depression and the turmoil caused by two World Wars. Prior to 1920 he took in his brother Arthur as a partner. Herbert was our longest-serving president and he put his mark on the firm more than anyone else.


In the late 1940’s Arthur became seriously ill, and Herbert hired Lloyd Mann (who was married to Herbert’s daughter Roslyn). Lloyd had just returned from serving overseas as a decorated RCAF bomber pilot during the Second World War. Herbert loved the business and kept working well into his 80’s, gradually turning over the management to Lloyd. Herbert died in 1978 and Lloyd Mann became president although he had been managing the business prior to that time due to Herbert’s advancing age. Lloyd modernized the firm considerably during this time.


In 1966 Lloyd & Roslyn’s son Donald began working part-time for the firm while still in high school. He continued working there through university and later joined the firm on a full-time basis and has been running the business for the last few years. The firm is currently owned by Donald Mann who is the great-grandson of the founder.

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