When it comes to understanding and choosing the best shingle manufacturer warranties, Roofmaster Ottawa makes the choice easy. Most of the jobs installed by Roofmaster use CertainTeed brand shingles. These are among the highest rated shingles in the industry. CertainTeed shingles go through vigorous testing to meet the company’s stringent standards and requirements which in many cases surpass all other shingle brands in Canada. Roofmaster has offered the high-quality “Integri