REFRESH YOUR HOME: 50% Off Installation + Financing up to 20 Years + $250 Online Booking Bonus

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Coastal Windows & ExteriorsFree Estimate

Local Exterior Contractor · Portsmouth, NH

Siding, Windows, Roofing & Doors in Portsmouth, NH

Portsmouth's mix of historic and modern coastal homes get Coastal's Elite Preferred James Hardie® and premium vinyl installs.

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★★★★★5-Star on Google
Licensed · Insured · Lifetime Warranty
Recent Coastal Windows & Exteriors install in Portsmouth, New Hampshire
★4.8Google
James Hardie Elite Preferred ContractorCertified Vinyl Siding InstallerGoogle 5-star reviews#1 Woman-Owned Construction Company in New EnglandInc. 5000SBA financing

Services in Portsmouth

Everything we install in Portsmouth

Factory-trained crews. Lifetime product warranties. Financing up to 20 years.

Replacement Windows installed by Coastal Windows & Exteriors

Replacement Windows

Triple-pane, energy-efficient windows built for New England winters.

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James Hardie® Siding installed by Coastal Windows & Exteriors

James Hardie® Siding

Fiber-cement siding engineered for coastal weather.

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Vinyl Siding installed by Coastal Windows & Exteriors

Vinyl Siding

Foam-backed premium vinyl in 30+ fade-resistant colors.

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Roof Replacement installed by Coastal Windows & Exteriors

Roof Replacement

GAF architectural shingle systems installed by Master Elite crews.

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Entry Doors installed by Coastal Windows & Exteriors

Entry Doors

ProVia fiberglass and steel entry doors with 236% ROI.

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What New Hampshire homeowners say

Real customer reviews

★★★★★

"They made this experience personable and easy… so fast at returning my call. Emily was patient and answered all our questions."

— Christie, Salem

★★★★★

"Very happy with the speed of scheduling — completed the same day! Peace of mind going into the winter months. Thank you Coastal!"

— Meredith F., Tewksbury

★★★★★

"Great all-around process from selecting a product to pricing and installation. Everything cleaned up every day. Highly recommend."

— Jon M., Duxbury

Service Area

Proudly serving Portsmouth & surrounding New Hampshire towns

Same local crews, same lifetime warranty across every community. Don't see your town? Call 978-818-1503 — we probably still serve it.

ZIP codes served

  • 03801

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Nearby communities

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Schedule your Portsmouth consultation

No pressure, no obligation — response within one business day.

Product interest

Or call 978-818-1503

Recent projects

Projects near Portsmouth, New Hampshire

FAQ

Common questions from Portsmouth homeowners

We serve Portsmouth and every surrounding community across Massachusetts, New Hampshire, and Maine. Local crews handle every install — same lifetime warranty across the entire service area.