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Belknap County, NH Windows, Siding, Roofing, and Doors

Coastal Windows & Exteriors is proud to bring our award-winning exterior home remodeling services to the beautiful communities of Belknap County, NH. As a trusted New England-based company, we specialize in energy-efficient windows, durable siding, weather-resistant roofing, and secure, stylish doors. Whether you’re nestled along Lake Winnipesaukee in Laconia or enjoying the peaceful towns of Gilford, Meredith, or Belmont, our expert team is here to serve you.

About Belknap County, NH

Located in the Lakes Region of central New Hampshire, Belknap County is known for its scenic beauty, historic charm, and close-knit communities. The county was founded in 1840 and named after Dr. Jeremy Belknap, a renowned historian and minister. Today, Belknap County is home to year-round residents and seasonal visitors alike, with homes ranging from classic New England capes to modern lakeside retreats. Coastal Windows & Exteriors is honored to support the unique character and style of homes throughout the area.

Why Belknap County Homeowners Choose Coastal

Local Expertise: We understand the unique climate and housing styles in the Lakes Region.
Energy Efficiency: Lower energy bills with top-rated products that seal in comfort.
Trusted Service: We’re known across New England for our integrity, craftsmanship, and reliability.
Award-Winning Products: Backed by industry-leading warranties and energy-saving performance.

Neighborhood Service Areas

Alton

Alton Bay

Barnstead

Belmont

Center Barnstead

Center Harbor

Gilford

Gilmanton

Gilmanton Iron Works

Laconia

Lochmere

Meredith

New Hampton

Sanbornton

Tilton

Winnisquam

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WHAT WE DO

Coastal Windows & Exteriors home improvement pros specializing in replacement windows, doors, roofing & siding throughout Norfolk County, MA and surrounding area throughout Massachusetts

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Window Replacement Services in Belknap County

Our energy-efficient replacement windows are perfect for combating New Hampshire’s cold winters and humid summers. Designed to provide superior insulation and beauty, our windows come in a variety of styles including double-hung, casement, bay, and bow. Whether you’re updating a family home in Tilton or a lakeside property in Alton, our expert installers ensure a seamless upgrade that boosts comfort and savings.

Siding Installation & Replacement

Enhance your home’s appearance and protection with premium vinyl and fiber cement siding. Coastal Windows & Exteriors serves the entire Belknap County area with siding options that resist fading, cracking, and moisture damage. From heritage homes in Gilmanton to new construction in Center Harbor, our siding keeps homes looking sharp and weatherproof year-round.

Roofing Services for Lasting Protection

We install high-quality asphalt shingle roofing systems built to withstand New England’s toughest storms. Whether you’re in Sanbornton or Laconia, our expert roofing team delivers peace of mind with every project. Our roofing products are backed by industry-leading warranties and designed for longevity, beauty, and energy performance.

Exterior Doors to Match Your Style

Your home’s entry should be as welcoming as it is secure. Our front entry, storm, and patio doors are crafted to deliver both curb appeal and protection. Serving towns across Belknap County, we offer a range of door styles and materials that suit both traditional and contemporary homes.

If you're ready to upgrade your Belknap County home, Coastal Windows & Exteriors is here to help. Contact us today for a free consultation and experience the difference of working with a company that truly cares about your home and community.