Grafton County NH Windows, Siding, Roofing & Door Solutions
Coastal Windows & Exteriors serves homeowners across Grafton 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 Grafton County Homeowners.
We bring dream homes to life with exterior remodeling in Grafton 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 Grafton County, NH
Grafton County stretches from Hanover and Lebanon in the Upper Valley north through Plymouth and Littleton into the western White Mountains. Academic-town colonials around Hanover, working farmhouses in the river towns, and mountain homes and ski properties in the northern reaches.
Long, cold winters with major snowfall and heavy ice loading — Grafton County exteriors are tested harder and longer than almost anywhere else in New England. That's the standard every product we install in Grafton County has to meet — not a catalog spec, but what a Lebanon winter actually does to a house.
We block-schedule Upper Valley and White Mountain projects so crews work consecutive days and your home isn't opened up longer than necessary. 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.
Grafton County Roofing — Lebanon, Hanover, Plymouth & Every Town Between
Snow retention, ice damming and ventilation drive Grafton County roofing — a shingle-only quote here ignores the actual failure mode. We install complete GAF Master Elite® roof systems across Grafton 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 Grafton 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 Lebanon 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 Grafton County project.
Ready for your free Grafton County roofing estimate?
Free EstimateJames Hardie & Vinyl Siding Across Grafton County
Snow banked against walls for months makes rot-proof siding and proper moisture barriers non-negotiable in the northern towns. As a James Hardie Elite Preferred Contractor we install fiber cement and premium insulated vinyl throughout Grafton County. James Hardie siding returns 144% of its cost at resale; premium vinyl returns 97%.
Colors that hold
Upper Valley and mountain homes favor deep greens, charcoals and natural wood-tone accents with heavy trim. 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 Grafton 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 Grafton County Homes
Heating costs in Grafton County are among the highest in the state, which makes triple-pane replacement windows an unusually strong investment. Every window we install in Grafton 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 Hanover or Plymouth 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 Grafton County
Mudroom and main entries take constant winter abuse here, and thermally broken fiberglass units hold their seal where wood and steel fail. We install ProVia entry doors and insulated sliding glass doors throughout Grafton 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 Lebanon and Hanover 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 Grafton 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 Grafton County
How do I find a reliable roofing contractor near me in Grafton 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 Grafton 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 Grafton 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.
How much can new windows save on heating in northern New Hampshire?
Homeowners upgrading from single-pane or failed double-pane units commonly see $500 or more per year in Grafton County's climate, and the comfort difference near the glass is immediate. Actual savings depend on your home's size, insulation and heating fuel.
Do you install snow retention systems on Grafton County roofs?
Yes. On metal and steep-slope roofs above entries, walkways and driveways we install snow guards or rail systems so sliding snow doesn't damage landscaping, gutters or anyone underneath.
Request Your Free Grafton County Quote
Tell us about your project and a consultant who works in Grafton County every week will price it out — no pressure, no subcontracted sales team.
- Serving 39+ Grafton County towns
- Save 50% off installation + financing up to 20 years
- Prefer to talk? 1-800-903-6604