48-Year NH Roofer Maintains GAF Master Elite and Carlisle EPDM Credentials, Bolstering Commercial Roofing Options in the Northeast
Merrimack Valley Roofing and Gutters, founded in 1976, continues to hold GAF Master Elite and Carlisle Sure-Seal EPDM certifications, underscoring its expertise and reliability for commercial property owners across Southern New Hampshire, Northeast Massachusetts, and Southern Maine.

Merrimack Valley Roofing and Gutters, a Sandown, New Hampshire-based commercial roofing contractor established in 1976, has announced that its GAF Master Elite status and Carlisle Sure-Seal EPDM certification remain active. These credentials, held by fewer than 2% of U.S. roofing contractors, underscore the company's 48 years of uninterrupted industry experience and its ability to deliver multi-system roofing solutions for commercial property managers, builders, and developers across the region.
The announcement comes as commercial building owners in Southern New Hampshire, Northeast Massachusetts, and Southern Maine face complex roofing decisions involving material selection, installation quality, and long-term warranty protection. Merrimack Valley Roofing's Master Elite designation, awarded by GAF—one of North America's largest roofing manufacturers—signals that the company meets rigorous training, insurance, and quality standards. Similarly, its Carlisle Sure-Seal EPDM certification qualifies the firm to install and warrant Carlisle's rubber roofing membrane systems, providing manufacturer-backed assurance that commercial developers often require for asset protection.
Beyond these certifications, the company holds an BBB A+ accreditation, reflecting consistent client service and business conduct over its operational history. This combination of credentials and longevity positions Merrimack Valley Roofing as a reliable partner for commercial projects that demand documented expertise and accountability.
The firm offers a range of roofing systems, including EPDM, TPO, metal, and slate, catering to varied commercial building types. TPO roofing systems, known for their heat-reflective properties and weldable seams, have become a popular choice for flat and low-slope roofs. Merrimack Valley Roofing applies the same technical competency to TPO installations, meeting the standards expected in new construction and re-roofing projects. Metal and slate systems extend the company's capabilities to historic structures and high-end developments where durability and aesthetic character are priorities.
Merrimack Valley Roofing and Gutters serves commercial property owners, general contractors, and developers across Southern New Hampshire, Northeast Massachusetts, and Southern Maine. Its central location in Sandown, NH, enables timely response across this three-state footprint, supporting regional development activity and ongoing maintenance programs in established commercial corridors and growing suburban areas.
With nearly five decades of field experience and active manufacturer certifications, the company offers a documented track record that project stakeholders can evaluate against their specific requirements. This combination of credentials and longevity is particularly relevant at a time when commercial building owners are seeking contractors who can navigate complex material choices and provide long-term warranty support.