What are the opening hours?

Monday 8:30am - 4:30pm Tuesday 8:30am - 4:30pm Wednesday 8:30am - 4:30pm Thursday 8:30am - 4:30pm Friday 8:30am - 4:30pm

George J. Keller & Sons, LLC

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United States
Flanders, NJ
George J. Keller & Sons, LLC

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We are a family-owned operation serving NJ since 1980 providing Roofing, Siding, Windows and Gutters

When you’re looking for a home remodeling company for roofing, siding, windows or decks, remember: of the thousands of home contracting companies in Northern and Central New Jersey, only one offers its customers:

• 41 consecutive years in business
• roofing, siding, and window process guides
• standard 10-year workmanship warranty for your roof replacement and the ability to offer you the highest rated manufacturer warranties as well
• 200+ references you can call
• all crew supervisors have 15+ years of experience
• written estimates with price guarantees for the work specified
• roofing insurance (ask us why this is imperative for Homeowners)
• Multiple manufacturer Certifications (GAF, James Hardie, Andersen)

Contact us:
973-970-0168
[email protected]
www.GJKeller.com

10/31/2026

Did You Know: Witches spend Halloween night flying on their broomsticks, judging homes from above. Missing shingles? Sneer. Clogged gutters? Cackle. But our customers' homes? They can’t help but nod approvingly and keep on flying. Happy Halloween from all of us at GJK!

10/28/2026

🎉 Big news! George J. Keller & Sons has officially earned CertainTeed's Premier SidingMaster certification, the highest level of siding certification CertainTeed offers.

This achievement reflects our team's advanced expertise in siding installation, from precision techniques to top-tier craftsmanship on every project. It's one more way we ensure every home we work on gets the quality and durability it deserves.

Thinking about a siding upgrade? You can trust the team with the credentials to back it up. 🏡

https://bit.ly/4roxIk9

10/22/2026

Always such valuable time spent networking together, and it was very much our pleasure to host everyone this morning!

10/22/2026

Roofing, siding, and window upgrades do more than improve curb appeal; they protect one of your biggest investments.

Here's how exterior improvements help preserve your home's value:

✔ Prevent water damage and structural issues
✔ Improve energy efficiency
✔ Boost resale value and buyer confidence
✔ Reduce long-term maintenance costs

Investing in your home's exterior now pays off for years to come.

https://bit.ly/4ycHl8e

10/20/2026

Love your George J. Keller & Sons experience? Share it and get rewarded.

If you're an existing client, you can refer a friend or family member for a project of $2,000 or more, and once the project is completed, you'll receive $100 as a thank-you.

It's our way of saying thanks for spreading the word about quality you can trust.

Contact us today to refer someone or get started on your own project.

https://bit.ly/4ycHl8e

10/16/2026

This week, we spent two wonderful days at the GAF - Roofing headquarters for the 3-Star President’s Club Elite Event. It is always an honor and a privilege to spend time with the leaders at GAF and fellow like-minded contractor peers. This time together having deep dive discussions into current considerations and what’s to come in the future, to be able to provide customers the best roofing experience possible, is simply immeasurable and we are extremely proud to be part of such an elite group of thinkers and doers.

10/14/2026

Nothing tells the story better than the transformation itself. Take a look at this recent project completed by our team, from worn and weathered to a fresh, reliable roof and siding built to last.

Every project reflects our commitment to quality craftsmanship and materials that stand up to New Jersey weather.

Ready for your own transformation? Contact us for a free estimate.

https://bit.ly/4ycHl8e

10/08/2026

Clogged gutters do more than just look messy. Left unattended, they can lead to ice dams, water damage, and even foundation issues once winter weather arrives.

Before the cold sets in, make sure to:

✔ Clear out leaves and debris
✔ Check for loose or sagging sections
✔ Confirm downspouts are draining properly
✔ Look for signs of water damage near the roofline

A little gutter care now goes a long way toward protecting your home this winter.

https://bit.ly/4ycHl8e

10/06/2026

As leaves fall and temperatures drop, it's easy to miss the early warning signs that your roof needs attention. Before winter weather sets in, keep an eye out for:

✔ Missing or curling shingles
✔ Granules collecting in gutters
✔ Water stains on ceilings or walls
✔ Sagging areas on the roofline
✔ Daylight visible through the attic

Catching these signs early can save you from costly repairs down the road.

https://bit.ly/4rq8kdM

09/30/2026

A new roof, siding, or windows is an investment in your home, and we want to make it as easy as possible.

Ask us about flexible financing options that let you get the project started now, without the upfront financial stress.

Contact us today to learn more and schedule your free estimate.

https://bit.ly/4fOVYI3

Address

Flanders, NJ

Opening Hours

Monday	8:30am - 4:30pm
Tuesday	8:30am - 4:30pm
Wednesday	8:30am - 4:30pm
Thursday	8:30am - 4:30pm
Friday	8:30am - 4:30pm

Telephone

+19739270963

Website

https://www.GJKeller.com/

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