Family Owned & Operated

Workmanship Warranty

Emergency Services 24/7

Locally Sourced Materials

Roofing Excellence

A 2024 award-winning roofing company, Dennis General Contractor (DGC) specializes in providing top-tier commercial and residential roofing services across Southwest Montana. As a family-owned business, our mission is to revolutionize the roofing industry with unmatched quality, exceptional customer care, and a commitment to community empowerment. we strive to create a legacy of integrity and support, not just for our clients but also for our dedicated team and the community we proudly serve.

2024

award-winning
roofing company

Quality & Integrity in Every Roof

As soon as you suspect there’s something wrong, let us know. We’ll come to your home and take care of the roof repair you need. We offer free estimates on all our repair jobs. We’ll assess the condition of your roof and let you know how much it will cost to restore.

Asphalt Shingles

Durable and cost-effective, our asphalt shingle roofs provide reliable protection and versatile style options to suit any home.

Synthetic Tiles

Combining the elegance of traditional tiles with advanced durability, our synthetic tile roofs offer long-lasting beauty and low maintenance.

Metal Roofing

Known for their exceptional durability and energy efficiency, our metal roofs provide a sleek, modern look that stands up to Montana's toughest weather.

Low Slope

Ideal for commercial developmetns, our low slope roofing solutions deliver superior waterproofing and energy efficiency, ensuring long-term performance and value.

Custom Sustainable Roofing

Our sustainable roofs with asphalt leverage advanced shingle technology known as polymer modified (rubberized) asphalt, providing cleaner, longer-lasting protection for your home

Your Experience with Dennis General Contractor

Whether you’re a homeowner, contractor, or insurance company, our commitment to using high-quality materials, innovative technology, and certified expertise ensures exceptional results, while our dedication to giving back and treating every client like family sets us apart from the rest.When you work with us you can count on:

Community Focused

Our production team uses the “Catch-All” system to protect landscaping and maintain pristine job sites, often leaving properties cleaner than we found them.

Award-Winning Service

Recognized for roofing excellence with the 2024 Arma Gold award, we consistently deliver high-quality workmanship and customer satisfaction.

Innovative Technology

We offer a client customer portal for real-time project updates, 3D renderings for design visualization, and advanced CRM for seamless project management.

Certified Excellence

Our team holds multiple certifications, including Malarkey Emerald Pro, Velux skylight, Brava roof tile, OSHA, and HAAG, ensuring top-tier expertise.

High-Quality Materials

We use premium, American-made materials, including smog-reducing Malarkey shingles, to ensure durability and environmental responsibility.

Storm Restoration Experts

Specializing in roof replacements and storm restoration, we handle insurance claims from start to finish, providing a hassle-free experience for our clients.

Family-Owned and Operated

We bring a personal touch and a strong commitment to integrity, treating every client as part of our extended family.

Comprehensive Clean-Up

We are committed to giving back to the community and empowering future generations, making a positive impact beyond roofing.

Community Focused

Our production team uses the “Catch-All” system to protect landscaping and maintain pristine job sites, often leaving properties cleaner than we found them.

Award-Winning Service

Recognized for roofing excellence with the 2024 Arma Gold award, we consistently deliver high-quality workmanship and customer satisfaction.

Innovative Technology

We offer a client customer portal for real-time project updates, 3D renderings for design visualization, and advanced CRM for seamless project management.

Storm Restoration Experts

Specializing in roof replacements and storm restoration, we handle insurance claims from start to finish, providing a hassle-free experience for our clients.

Certified Excellence

Our team holds multiple certifications, including Malarkey Emerald Pro, Velux skylight, Brava roof tile, OSHA, and HAAG, ensuring top-tier expertise.

Family-Owned and Operated

We bring a personal touch and a strong commitment to integrity, treating every client as part of our extended family.

High-Quality Materials

We use premium, American-made materials, including smog-reducing Malarkey shingles, to ensure durability and environmental responsibility.

Comprehensive Clean-Up

We are committed to giving back to the community and empowering future generations, making a positive impact beyond roofing.

What Our Clients Say About Us