Coastal Windows & Exteriors
Woburn, MA · Established NH · Ranked #10 of 25 in Southern New Hampshire
About Coastal Windows & Exteriors
Coastal Windows & Exteriors is a Woburn, MA-based (serving Southern NH) siding contractor offering siding, windows, roofing, doors. Manufacturer credentials: James Hardie Elite Preferred. Holds a 4.8★ rating across 1060 Google reviews.
Siding materials they install
James Hardie / fiber cement sidingVinyl siding installation
Strengths
- Manufacturer-certified installer: James Hardie Elite Preferred
- Financing available
- Strong review base — 4.8★ across 1060 Google reviews
- Licensed & insured
Worth checking
- Founding year not independently verified
- Headquartered in MA (serves NH as a service area)
Credentials
James Hardie Elite PreferredGAF Master Elite
Warranty
James Hardie limited warranty (Good Housekeeping-backed); financing up to 20 years
Areas served
Salem, NH · Derry, NH · Londonderry, NH · Nashua, NH · Manchester, NH
How we scored Coastal Windows & Exteriors
Our 68/100 reflects four weighted pillars. See the full method for exact weights.
- Customer reputation — 90/100. Aggregated star rating across Google, BBB and Facebook, weighted by review volume on a logarithmic curve — so a handful of perfect reviews can’t outweigh a long, consistent track record, and an established firm isn’t buried by a brand-new one.
- Manufacturer credentials — 66/100. The heart of a siding rating: manufacturer installer programs (James Hardie Elite Preferred, CertainTeed, the Vinyl Siding Institute, LP SmartSide, Mastic/Alside), plus state licensing and liability insurance. Certified crews install to spec and unlock the strongest material warranties.
- Workmanship & warranty — 48/100. Years installing exterior cladding, the breadth of materials a crew works in (fiber cement, vinyl, cedar, engineered wood), and the strength of the written workmanship warranty behind the labor.
- Service & local fit — 66/100. How rooted the company is in Southern New Hampshire, whether financing is offered, and how easy it is to reach, schedule and get a written estimate from.
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