About
Our Family Legacy
Serving Thunder Bay & Northwestern Ontario Since 1990
The JM Northshore Roofing Story
At JM Northshore Roofing, we believe a roof is more than just shingles and nails - it’s the protection for your family’s most valuable asset. What started in 1990 as a small, family-run business has grown into Northwestern Ontario’s premier roofing authority, and we’ve kept our values intact every step of the way.
Over the last three decades, our business has truly been a family affair. From grandparents and spouses to our current father-son leadership, we have built this company on the foundation of shared integrity and hard work. By maintaining a stable, highly skilled core team of essential workers, we provide a level of consistency and craftsmanship that is rare in today’s market.
Ready to start your project? Contact Now: 807-475-9292 or mark@jmnorthshoreroofing.ca
The GAF Master Elite Difference
We are proud to be the only GAF Master Elite roofing company in Northwestern Ontario. This is a promise to our customers. Because we have met the highest standards of training and excellence in the industry, we can offer our clients:
01
Manufacturer
Warranties
Protection that provides true peace of mind.
02
Superior
Products
High-performance materials specifically selected to withstand the harsh Northern Ontario climate.
03
Verified
Expertise
Rigorous, ongoing training that ensures your roof is installed correctly, the first time.
#1 Roofing & Exterior Services in Thunder Bay & Northwestern Ontario
At JM Northshore Roofing, we provide specialized roofing solutions for residential and commercial properties throughout Thunder Bay and the surrounding region. As Northwestern Ontario’s only GAF Master Elite contractor, we offer industry-leading warranties and precision craftsmanship.
Expert installation of asphalt shingles and cedar shakes. GAF Master Elite certified for superior materials and warranty options.
High-performance roofing systems for Thunder Bay businesses. Professional installation and preventative maintenance.
Specialized masonry maintenance and structural repair to ensure your chimney remains weather-tight and safe.
Precision-fit, leak-proof skylight solutions designed to brighten your home while withstanding Northern Ontario weather.