Strafford County NH Windows, Siding, Roofing & Door Solutions
Coastal Windows & Exteriors serves homeowners across Strafford County, NH — James Hardie siding, GAF Master Elite® roofing, energy-efficient replacement windows and ProVia entry doors, installed by our own factory-trained crews.
Built on Education. Backed by Awards. Loved by Strafford County Homeowners.
We bring dream homes to life with exterior remodeling in Strafford County, NH: energy-efficient roofing, replacement windows, vinyl and James Hardie siding, and entry doors — with an empathetic, educational approach.
Leading the Way in Exterior Remodeling
- Established in 2011 — woman-owned, family-run exterior remodeling company (not a franchise)
- Branch locations in Beverly, MA and Bedford, NH
- GAF-certified Master Elite® Roofing Contractor
- James Hardie Elite Preferred Contractor
- 4.8-star Google rating with 1,000+ verified reviews
- #1 Woman-Owned Replacement Company in New England (Inc. 5000 & Qualified Remodeler Top 500)
- #1 Woman-Owned James Hardie Exterior Remodeling Company in New England
- #2 Top Satisfaction Leader in Home Improvement (Qualified Remodeler)
Award-Winning. Woman-Owned. Here for You.
- James Hardie Service Excellence Award — 2023, 2024, 2025, 2026
- HIP Top 200 U.S. Home Improvement Companies — 2024, 2025, 2026
- James Hardie President's Club Award — 2025
- BONS Editors' Choice Award — 2023, 2024, 2025
- SBA Massachusetts Business Person of the Year — 2024
- Qualified Remodeler #1 Woman-Owned in New England — 2023, 2024
- GAF Master Elite President's Club Award — 7 consecutive years (2017–2023)
- Family Business of the Year, Greater Beverly Chamber of Commerce — 2022
About Strafford County, NH
Strafford County covers the Tri-City area — Dover, Rochester and Somersworth — plus Durham, Barrington and the Great Bay towns. Mill-city housing and two-families in Dover, Rochester and Somersworth, older colonials in Durham and Madbury, and steady new construction in Barrington and Lee.
Great Bay and Piscataqua River moisture combines with hard inland winters, and the tidal humidity keeps exterior wood damp longer than homeowners expect. That's the standard every product we install in Strafford County has to meet — not a catalog spec, but what a Dover winter actually does to a house.
Strafford County sits between our Bedford branch and the Maine line, so crews cover it constantly on the Seacoast rotation. Woman-owned since 2011, headquartered in Beverly, MA with a branch in Bedford, NH, we've built our reputation on educating homeowners first and quoting second.
Strafford County Roofing — Dover, Rochester, Durham & Every Town Between
Older Tri-City roofs often carry two or three shingle layers, and a proper tear-off is the only way to inspect and correct the deck underneath. We install complete GAF Master Elite® roof systems across Strafford County — a credential held by the top 2% of roofing contractors in North America — and a new roof returns up to 68% of its cost at resale.
Built for this climate
Impact-rated, algae-resistant shingles with lifetime warranties, specified for the conditions Strafford County actually sees rather than a national average.
Leaks fixed at the source
We diagnose the full system — flashing, underlayment, ventilation and decking — and correct the cause instead of patching the same spot every spring.
Metal roofing options
A 70-plus-year roof that sheds snow and resists ice damming — a strong fit for the most exposed homes in Dover and the surrounding towns.
Ventilated roof systems
Ice dams, attic moisture and premature shingle failure are ventilation problems. We balance intake and exhaust across the entire roofline.
GAF system warranties
A transferable lifetime shingle warranty from America's #1 roofing manufacturer, backed by our own 30-year labor workmanship guarantee.
Clean, contained job sites
Landscaping protection, daily magnet sweeps and a tidy site every evening on every Strafford County project.
Ready for your free Strafford County roofing estimate?
Free EstimateJames Hardie & Vinyl Siding Across Strafford County
Mill-era multifamilies and older colonials here need siding that handles moisture without the perpetual scraping and repainting. As a James Hardie Elite Preferred Contractor we install fiber cement and premium insulated vinyl throughout Strafford County. James Hardie siding returns 144% of its cost at resale; premium vinyl returns 97%.
Colors that hold
Strafford County trends practical and clean: light gray and white bodies, dark trim, and low-maintenance materials throughout. ColorPlus® Technology keeps those finishes true through years of New Hampshire weather.
Insulated vinyl value
Rigid foam backing adds wall insulation and panel rigidity, and premium vinyl still returns about 97% of its cost at resale.
Everlast composite
Impact resistance and color retention for homeowners who want premium performance without the fiber cement price point.
Moisture defense built in
Every Strafford County project includes HardieWrap® or premium housewrap, properly lapped and taped, because wind-driven rain finds every gap.
Trim and detail work
Corners, window surrounds, soffit and fascia finished as one system, so the whole exterior ages together instead of one detail failing early.
Transferable warranties
James Hardie's 30-year finish warranty and a transferable lifetime warranty on premium vinyl protect the investment either way.
Contact us for a free 3D model of your actual home with new siding.
Free EstimateReplacement Windows for Strafford County Homes
Rental and multifamily owners across Dover and Rochester replace windows to cut heating costs and end the tenant draft complaints for good. Every window we install in Strafford County is custom-built to the opening and includes our premium energy package at no extra cost. Replacement windows deliver a 76% return on investment.
Stop paying to heat the outside
Triple-pane glass with advanced low-E coatings and insulated frames cuts heat loss at the source — New Hampshire homeowners commonly save $500-plus per year.
Water intrusion eliminated
Foam-filled frames, precision flashing and sealed exterior trim close the paths moisture uses to get into the wall.
Harvey and premium lines
A well-regarded New England brand offered alongside other premium manufacturers, all with the same full weatherproofing and energy package.
Custom configurations
Colonial double-hungs, picture windows, casements, bays, black frames, divided lights and arched tops — sized to the openings you already have in your Rochester or Durham home.
Noticeably quieter rooms
Triple-pane glass measurably reduces outside noise, which homeowners on busy streets notice the first night after installation.
No upsells
The premium energy package comes standard on every window project. No add-on pricing, no surprises at signing.
Start saving on energy bills — get your free window estimate today.
Free EstimateEntry & Sliding Door Replacement in Strafford County
High-traffic multifamily entries need doors built for constant use — steel and fiberglass with reinforced hardware, not builder-grade slabs. We install ProVia entry doors and insulated sliding glass doors throughout Strafford County — sealed, thermally broken and built to keep working through New Hampshire winters. Entry door replacement delivers a 216% return on investment.
Sealed against the weather
Fiberglass and steel construction with thermal break cores and adjustable thresholds stop drafts and keep water out of the sill.
Storm and screen options
Self-closing storm configurations with reinforced hinges and heavy-duty hardware for exposed entries.
ProVia craftsmanship
Custom-built doors with decorative glass, hardware packages and finishes matched to your home's exterior palette.
Sliding patio doors
Insulated low-E glass, modern rollers and multi-point locking hardware that ends the cold zone in front of the door.
Curb appeal that lasts
Color-matched finishes that still look right a decade later — a meaningful difference on Dover and Rochester street frontages.
Precision installation
Level, plumb and fully weatherproofed. Most door failures are installation failures, and that's where we spend the time.
Upgrade your entry — schedule a free door consultation.
Free EstimateTowns We Serve in Strafford County
Don't see your town? We serve 730+ communities across Massachusetts, New Hampshire and Maine. Call 1-800-903-6604 to schedule your free consultation.
Exterior Remodeling Questions in Strafford County
How do I find a reliable roofing contractor near me in Strafford County?
Start with a GAF Master Elite® certified roofing contractor — only the top 2% of contractors in North America earn that designation. Look for verified credentials, a written workmanship warranty, an honest assessment rather than a scare tactic, and a roof system designed for New England's freeze-thaw cycles, heavy snow and nor'easters.
How much does roof replacement cost in Strafford County?
Roof replacement in New England averages $35,701 for asphalt shingles and $56,282 for metal roofing, based on current Cost vs. Value data. Your actual cost depends on roof size, pitch, material choice, layers to remove and installation complexity — which is why we measure and quote in person, at no charge.
What's the difference between regular and insulated vinyl siding?
The key difference is a foam backing. Insulated vinyl siding adds a layer of rigid foam that improves energy efficiency and wall rigidity — a meaningful difference in comfort and heating costs in this climate.
What windows keep heat and cold out?
Triple-pane, ENERGY STAR certified windows are the most effective option for New England. Most drafts come from air infiltration around the frame rather than through the glass, so installation quality matters as much as the window itself.
How long do replacement windows last in Strafford County?
Quality vinyl windows with professional installation last 25 to 30 years here, through snow load, freeze-thaw cycling and nor'easters. Fogged glass, sticking sashes or visible frame damage are the signs the current units are past their service life.
What is the exterior door installation cost?
Exterior door installation in New England ranges from $2,547 for a steel entry door to $11,953 for a grand fiberglass door, depending on material, style, glass package and installation complexity.
Do you work on rental and multifamily properties in Dover and Rochester?
Yes. We handle multifamily siding, roofing and window projects across Strafford County, including phased scheduling so tenants keep access and units stay occupied through the work.
How do I know if my roof needs replacement or just repair?
Curling or cupping shingles, granules in the gutters, daylight in the attic, repeated leaks in the same spot, or an age past 20 years all point to replacement. We give an honest assessment — if a repair genuinely solves it, we'll tell you.
Request Your Free Strafford County Quote
Tell us about your project and a consultant who works in Strafford County every week will price it out — no pressure, no subcontracted sales team.
- Serving 13+ Strafford County towns
- Save 50% off installation + financing up to 20 years
- Prefer to talk? 1-800-903-6604