Business Details
50+ Years
experience
Trusted Roofing Contractors in Mamaroneck, NY
Founded in 1934, Angus Theriault & Sons has served Westchester County and surrounding areas for over 80 years. As a family-owned business spanning three generations, we specialize in residential and commercial roofing solutions, including custom slate and copper fabrication, re-roofing, flat roofs, shingles, gutters, chimney flashing, and waterproofing. Our team brings over 95 years of combined experience, supported by certifications from the National Roofing Contractors Association (NRCA), Green Roofs for Healthy Cities (GRHC), and the Quality Master program.We stand behind our work with a 10-year guarantee on craftsmanship, ensuring long-term reliability and customer satisfaction. Our commitment to excellence has earned us enduring trust in the community, with clients praising our prompt, efficient, and professional service.
Services
Custom Slate & Copper
New Roofs
Re-Roofing
Flat Roofs
Shingles
Gutters
Chimney Flashing
Roof Repairs
Snow Guards
Waterproofing
Details
- Year established: 1934
Highlights and features
- We have over 80 years of experience serving Westchester County.
- Our team has 95+ years of combined experience in roofing.
- Certified by the National Roofing Contractors Association (NRCA).
- 10-year guarantee on workmanship for new roof projects.
- Certified 'Quality Master' company ensuring high industry standards.
Associations and certifications
- NRCA
- Green Roofs for Healthy Cities
- Quality Master
What people say
No water in basement
Fast service
Prompt response
Dry as a bone
Professional job
Services
Custom Slate & Copper
Craft bespoke slate and copper roofing solutions tailored to residential and commercial properties. Our expert fabrication ensures durability and aesthetic appeal, ideal for historic or modern structures. Clients benefit from long-lasting materials resistant to weather and corrosion.
Roof Repairs
Address leaks, storm damage, and wear with precision repairs. We prioritize rapid response to prevent further property damage, using high-quality materials for lasting results. Customers consistently report dry, leak-free outcomes post-service.
Gutter Cleaning
Prevent water damage with thorough gutter cleaning and drainage solutions. Regular maintenance ensures proper water flow, protecting foundations and exteriors. Clients highlight our efficient, reliable service in preventing seasonal flooding.
Chimney Flashing
Install and repair chimney flashing to prevent water infiltration at roof-chimney intersections. Our work meets industry standards, ensuring watertight seals. Customers praise the effectiveness of our solutions during heavy rains.
Flat Roofs
Design and install durable flat roofing systems for commercial properties. We use advanced waterproofing techniques to combat pooling and leaks. Businesses benefit from low-maintenance, cost-effective solutions suited to urban environments.
People
Steven Theriault
Third-Generation Owner
Steven Theriault continues the family legacy as the third-generation leader of Angus Theriault & Sons. With decades of hands-on experience, he oversees operations, ensuring adherence to the company's standards of quality and customer care established in 1934.
Questions
What areas do you serve?
We serve Westchester County and surrounding areas, including Mamaroneck, NY, where we've operated since 1934.
Do you offer warranties on your work?
Yes, we provide a 10-year guarantee on workmanship for all new roof projects.
Are your services available for emergency repairs?
While we prioritize scheduled work, we respond promptly to urgent repair needs during regular business hours.
What certifications do your team members hold?
Our team includes NRCA-certified professionals and is recognized as a Quality Master company for industry excellence.
How long does a typical roof installation take?
Most residential installations are completed within 1-3 days, depending on project complexity and weather conditions.
