Family-owned general contractor · Since 1921
North Georgia's trusted contractor for 100 years.
Roofing, storm & water restoration, remodeling, and 24/7 emergency service across North Georgia — with a former insurance adjuster on staff to get your claim done right.
What we do
One contractor for the whole home.
From an emergency at 2 a.m. to a full remodel, Duffy handles it start to finish — so you deal with one company you can trust, not ten you can't.
Roofing
Repairs, replacements & storm damage
From a few missing shingles to a full tear-off and replacement, we install and repair roofs built to stand up to Georgia weather, then stand behind the work.
Learn moreInsurance Claims Assistance
A former adjuster on your side
Storm or water damage claim? We have a former insurance adjuster on staff who documents the damage, meets your adjuster, and walks you through every step so you get what you're owed.
Learn moreWater & Storm Restoration
24/7 emergency response
When water gets in, every hour matters. We respond around the clock to dry out, tear out, and rebuild — restoring your home quickly and correctly.
Learn moreComplete Remodeling
Kitchens, baths & whole-home
Full-service remodeling managed start to finish by one accountable team — design, permits, trades, and finish work, done on schedule and to spec.
Learn moreDecks & Porches
Outdoor living, built to last
Custom decks, porches, and screened rooms engineered and built to code — the kind of outdoor space you'll actually use, season after season.
Learn moreGutters & Gutter Guards
Protect the whole house
Seamless gutters and guards that move water away from your foundation and keep the leaves out — so you're not up on a ladder every fall.
Learn moreEmergency Tree Removal
Down tree? We're on it.
A tree on the roof or blocking the drive can't wait. We remove hazardous and storm-downed trees fast, then handle any damage they left behind.
Learn moreConstruction Management
One team, full accountability
Full-service general contracting and construction management for larger projects — we coordinate every trade and timeline so you deal with one company, not ten.
Learn moreWhy Duffy
The difference a hundred years makes.
A century of trust
Family-owned and operating since 1921. Generations of doing right by North Georgia homeowners.
Insurance claims, handled
A former insurance adjuster on staff documents your damage and meets your adjuster, so you get what you're owed.
Licensed, insured, accountable
One accountable general contractor for the whole job — no chasing subs, no surprises, work we stand behind.
Where we work
Proudly serving 40+ North Georgia communities.
Based in Cumming, GA, we work across the north metro — from a single roof repair to a whole-home rebuild.
- Cumming
- Alpharetta
- Roswell
- Marietta
- Kennesaw
- Sandy Springs
- Atlanta
Reviews
Neighbors who trust us with their homes.
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Storm damage? Planning a project?
Get a free, no-pressure estimate.
Tell us what's going on and we'll come take a look. For emergencies, call any time — we answer 24/7.