Granite State Masonry & Waterproofing

Granite State Masonry & Waterproofing is a masonry and basement-waterproofing contractor based in Merrimack, New Hampshire, serving nearby New England homeowners. The company's Google reviews are sharply split. Two reviews from 2024 and 2025 describe serious problems: a garage floor that reportedly cracked the day after it was poured, weeks of unreturned calls, and a 30-year basement-waterproofing warranty that one customer says led to a disconnected phone number when she tried to have it honored. That same reviewer speculates the business may have closed and reopened under a different name. A third review, from mid-2024, tells a very different story: a homeowner who hired the company to replace a front walkway and install a granite step and two porch columns called the finished work on-time, on-budget, and reasonably priced, with craftsmanship worth recommending. With only three reviews on file and no independently verified New Hampshire license (masonry and waterproofing are not among the trades New Hampshire licenses through its OPLC registry), there isn't much of a track record to weigh either account against. Anyone considering this contractor should ask directly about warranty terms on any waterproofing work and get a clear, in-writing timeline before work begins, given how differently the two most recent Google reviews describe the company's follow-through.