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★★★★★ 5/5 from 320+ reviews

Professional Grantham Roofing Company | Call (877) 349-1553

Our Grantham crews average 17 roofs a month. We know what we're doing. Free estimates, no pressure. Ever.

📞 (877) 349-1553
12+
Years
500+
Projects
5
Rating
12+
Years Experience
500+
Projects Completed
5
Star Rating (320+ Reviews)
Licensed & Insured

Our Services

Our Roofing Services

Professional Roofing solutions for residential and commercial properties in Grantham.

roof replacement
FREE ESTIMATE

Roof Replacement

A roof replacement in Grantham typically runs $8,500 to $24,000 depending on the size and pitch. We give you an exact number upfront with a written proposal. No surprises on install day.

roof repair
SAME-DAY

Roof Repair

Roof repairs get worse when you ignore them. A $400 flashing repair turns into $4,000 of water damage inside the wall. Our Grantham crew can usually get there within 48 hours for non-emergency repairs.

storm damage repair
LICENSED

Storm Damage Repair

Wind damage doesn't always look obvious from the ground. Lifted shingles, broken seals, exposed nail heads. You can't see any of that without getting on the roof. Our Grantham inspector does a full 27-point inspection, free of charge.

new roof installation
TOP RATED

New Roof Installation

We price new installs by the roofing square (100 sq ft). Architectural shingles in Grantham typically run $350-$550 per square installed, depending on the pitch and access. That includes materials, labor, cleanup, and warranty registration.

metal roofing
GUARANTEED

Metal Roofing

Corrugated metal and R-panel are cost-effective options for barns, detached shops, and covered patios in Grantham. We install 29-gauge and 26-gauge corrugated with exposed fasteners using neoprene washer screws. For homes, we recommend 24-gauge standing seam with concealed fasteners. Cleaner look, no exposed fastener maintenance. DaVinci composite shake and slate profiles give you the metal longevity with a traditional New Hampshire aesthetic.

shingle roofing
INSURED

Shingle Roofing

Owens Corning Duration STORM shingles with triple-layer SureNail reinforcement strip. Rated to 130 mph wind per ASTM D7158. Algae-resistant granules prevent black streaking in humid New Hampshire climates. We install Duration in the full Owens Corning system for Preferred Protection or Platinum Protection warranty coverage. CertainTeed Landmark PRO with NailTrak technology is our alternative pick for Grantham homeowners who want the max warranty tier.

flat roofing
FREE ESTIMATE

Flat Roofing

PVC roofing membrane for Grantham restaurants, commercial kitchens, and any rooftop near grease exhaust. PVC resists animal fats and chemical exposure that destroys TPO and EPDM. We install IB Roof Systems and Duro-Last PVC with heat-welded seams and custom-fabricated accessories. Built-up roofing (BUR) with 3-4 plies of fiberglass felt in hot asphalt is still the longest-proven flat roof system with a 30+ year track record in New Hampshire.

commercial roofing
SAME-DAY

Commercial Roofing

Our Grantham commercial crews handle everything from small retail strip centers to 50,000 sq ft warehouses. TPO, EPDM, modified bitumen, metal. We're certified installers for all major commercial membrane systems.

gutter installation
LICENSED

Gutter Installation

Gutter replacement in Grantham runs $8-$15 per linear foot installed, depending on material and story height. That includes hangers every 24 inches, end caps, miters, and outlet drops. We custom-form everything on-site.

roof inspection
TOP RATED

Roof Inspection

Roof inspections after a storm are free. Always. We document hail hits, wind damage, and any pre-existing issues so your insurance claim is accurate and complete.

emergency roof repair
GUARANTEED

Emergency Roof Repair

Tree through the roof at 2 AM? Active leak flooding your kitchen? Call (877) 349-1553. We answer after hours for emergencies. Our Grantham emergency crew can be on-site within hours.

skylight installation
INSURED

Skylight Installation

Vented skylights open to let hot air escape. Great for kitchens and bathrooms in Grantham. Fixed skylights are cheaper and simpler. Solar-powered options from VELUX qualify for the federal 30% tax credit through 2032.

Ready to Get Started?

(877) 349-1553

Free Estimates • Available 24/7 • Licensed & Insured

Why Choose Grantham Roofing & Maintenance?

Trusted by homeowners and businesses across Grantham.

5-Star Google Rating

320+ homeowners reviewed us. We don't pay for reviews or offer discounts for them. Those are real people who hired us and took the time to say we did a good job.

GAF Master Elite Contractor

Only 3% of roofers earn this certification. It means we can offer the Golden Pledge warranty: 25-year workmanship plus 50-year materials. Best warranty in roofing, full stop.

Written Warranty

Manufacturer warranty plus our workmanship warranty in writing. If something fails because of our installation, we come back and fix it at no charge. Period.

Manufacturer Certified

GAF Master Elite, Owens Corning Preferred, CertainTeed SELECT ShingleMaster. We carry certifications from the big three. That means factory-trained crews and the best available warranties.

Our Work

Recent Projects

View All Projects →

Simple Process

How It Works

1

Schedule Your Inspection

Our inspector walks the roof looking at shingle condition, flashing integrity, vent function, and signs of moisture underneath. 30-45 minutes for most Grantham homes.

2

No-Surprise Quote

We price by the roofing square with all materials itemized. You'll see exactly what you're getting. Shingle brand, underlayment type, ventilation specs, flashing details.

3

Professional Crew

No subcontractors. Our crews, our equipment, our supervision. A project manager checks in throughout the day and does a final quality inspection before cleanup.

4

Your Approval

We walk the property with you, show you the finished roof, answer any questions. Then we run the magnetic nail sweep and clean up every scrap of debris.

Verified Reviews

What Our Customers Say

★★★★★ 5/5 from 320+ reviews
★★★★★

"I'm a contractor and I use Grantham Roofing & Maintenance for all my roofing subs. Their installs pass inspection every time. Their crew lead has been doing this 20+ years and it shows."

N
Nicole U.
Grantham
★★★★★

"Couldn't believe how clean the job site was when they left. Three passes with the magnet, swept the driveway, cleaned the gutters out. My wife said the yard looked better than before they showed up."

T
Tony R.
Grantham
★★★★★

"Asked for a second opinion because another company said I needed a full replacement. Grantham Roofing & Maintenance said I only needed valley flashing repair and some shingle replacement. Saved me about $14,000. I trust these guys."

L
Laura K.
Grantham

Service Areas

Areas We Serve

Local roofing coverage across Grantham and Henniker, Lyme, New London, Plymouth, Sugar Hill. One phone call to (877) 349-1553 and we schedule your free inspection.

Henniker Lyme New London Plymouth Sugar Hill Wilmot Berlin Conway Francestown Harrisville

FAQ

Frequently Asked Questions

Here's the process: we inspect your roof for free, document any storm damage with photos, and help you file the claim. Your insurance company sends an adjuster. We meet them on-site and walk the roof together. If approved, we do the work at the agreed price. If the estimate seems low, we supplement it with additional documentation.

Most residential roofs in Grantham are done in one day. We show up at 7 AM, tear off the old roof, install the new system, and clean up by end of day. Two-story homes, steep pitches, or large roofs might take two days. We never leave a house uncovered overnight.

Most residential roof replacements in Grantham cost between $8,500 and $24,000. The price depends on your roof size (measured in squares, where 1 square = 100 sq ft), pitch, accessibility, and material choice. Architectural shingles are $350-$550 per square installed. We give free estimates with exact pricing.

Age is the biggest factor. If your shingles are 20+ years old and you're seeing curling, cracking, or granule buildup in the gutters, it's time. Other red flags: leaks, missing shingles, daylight in the attic, and your neighbors all getting new roofs (same-age homes in a subdivision often need replacement around the same time).

Absolutely. A new roof shouldn't mean emptying your bank account. We have 0% intro options, low fixed-rate plans, and extended terms up to 12 years. Quick credit check, fast approval, and you can get your roof done this month instead of waiting until you've saved enough.

Have more questions? Call (877) 349-1553

SAME-DAY APPOINTMENTS AVAILABLE

Get Your Free Roof Inspection Today

24/7 emergency service. Most appointments available within 48 hours.

Call Now — Free Estimate
📞 (877) 349-1553

★★★★★ 5/5 from 320+ Reviews  ·  Licensed  ·  Insured

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