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Every home has a story — let’s make yours spectacular! Connect with leading siding companies in Londonderry NH who believe your home should be both gorgeous and green. Our revolutionary foam systems create R-values roughly 19% better than ordinary materials, delivering real savings that show up in every utility bill.
Your home works hard for your family — shouldn’t it work smarter too? Our eye-catching color range includes rich Espresso, bold Regatta, classic Lighthouse Red, and sleek Graphite that handle whatever New Hampshire dishes out. Love timeless beauty? Consider warm Country Beige, pure Aspen White, natural Cypress, or sophisticated Pearl! As the #1 woman-owned business for vinyl siding replacement in Londonderry NH throughout New England, our outstanding 4.8-star Google rating from 600+ delighted customers shows we make home dreams come alive.


Become the home everyone admires with stunning colors and designs that create instant wow-factor.
Stop throwing money away on energy costs with smart foam protection that keeps dollars in your account.
Say goodbye to constant repairs with tough materials that handle New Hampshire weather like champions.
Grow your biggest investment with smart upgrades that deliver proven 118% returns based on current data.
See your incredible transformation with free 3D technology that reveals your home’s amazing potential.
Relax completely knowing your upgrade is covered by our warranty protection.
Our dedicated experts work with homeowners throughout Londonderry and southern New Hampshire who demand both beauty and performance from their home improvements. From family neighborhoods to executive communities, we create stunning exteriors that protect and perform while reflecting each homeowner’s unique style. Our local knowledge and commitment to sustainable practices ensure your project delivers everything you envision and more. Ready to transform your home? Contact us for your personal consultation and see why Londonderry’s smartest homeowners choose our proven expertise for their most important investments!
“Working with Coastal Windows & Exteriors transformed our entire relationship with our home! They listened to our vision and made it happen perfectly within our timeline and budget. Our house looks absolutely amazing and our energy bills have dropped dramatically. They communicated every step of the way, respected our property, and delivered exactly what they promised. The craftsmanship is incredible and you can see they take real pride in their work. We recommend them to everyone in Londonderry!”
Ready to love your home but concerned about costs? Our simple financing process takes just minutes and our helpful team provides personal support every step of the way! Choose from 0% interest-free financing options plus customized payment plans that work with your lifestyle and budget. Begin your home transformation right now without financial pressure — quality siding solutions are accessible for every Londonderry family!
Build your ideal southern New Hampshire home with our stunning color collection featuring deep Espresso, vibrant Regatta, timeless Lighthouse Red, and contemporary Graphite for homes that make statements! Want lasting elegance? Choose Country Beige, Aspen White, Cypress, or Pearl for beauty that stands the test of time. Forward-thinking homeowners love Polaris, Indigo, Smoky Ash, and Metropolitan Gray! Select from texture options ranging from ultra-smooth modern to authentic wood-grain that provides natural appeal without ongoing maintenance demands!
Advanced foam technology beneath your new siding provides moisture control plus amazing additional performance benefits:
Choose smart technology for your southern New Hampshire home — schedule your consultation appointment today!
Londonderry stands as southern New Hampshire’s fastest-growing community located approximately 45 miles north of Boston, perfectly balancing suburban convenience with New England charm. This thriving town features diverse neighborhoods including established family areas, new developments, and executive communities spread throughout rolling hills and conservation land. Londonderry enjoys classic New Hampshire weather with cold snowy winters and beautiful summers, plus its southern location providing easier access to employment centers while maintaining small-town character. The community’s growth attracts young families and established professionals who value excellent schools, recreational opportunities, and strong property appreciation potential. Today’s Londonderry homeowners choose improvements that enhance their family’s lifestyle while managing New Hampshire’s climate through smart, sustainable building solutions.
Our family-focused process ensures exceptional results for southern New Hampshire families:
Choose family-focused installation excellence — call for your consultation today!
Your home improvement investment reflects several southern New Hampshire considerations:
Discover what your Londonderry home project will cost — request your straightforward estimate today!
Recognized for outstanding business leadership and innovation in home improvement through honest business practices.
Named Best of Northshore for consistently delivering exceptional siding and complete renovation services.
Honored for our dedication to supporting veterans and active military through Coastal’s Roofs for Heroes initiative.
Reflects our commitment to excellence and supporting women’s leadership in business.
Following strict safety standards and responsible practices protecting families and communities during every project.
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