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4.7

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Avatar for George J Keller & Sons LLC
George J Keller & Sons LLC
4.4(
262
)

Serving Dover, NJ and surrounding areas

Approved

In business since 1980

Free estimates

Warranties offered

"Our house was re-roofed in July 2016 by George J Keller & Sons. We had estimates from 7 roofing companies and felt most comfortable with Keller. We felt Keller was the most honest because they didn't try to low ball the work. Our roof had been leaking on and off so my husband walked the roof and knew that we had some warped and/or soft sheathing. The other companies that came out told us only 3 to 4 sheaths would require replacement but we knew there were many more. We didn't want to select a roofer who wasn't honest from the beginning, Our sales person was Mike Koty and we liked him from the beginning. He went into the crawl space to check the interior condition of the roof which was something the majority of the other roofers didn't do. He also walked the roof. We had tons of questions and he answered each one fully and completely. The work took almost 2 days because there was so much sheathing to replace and, yes, they did show (without us asking) the rotten/warped sheaths. The workers were all professional and quiet and there was no debris left after the job was completed. The roof looks great and there are no more leaks. Just an excellent job from start to finis ...in fact, my neighbor was so impressed, he just had Keller reroof his house."
Green With Envy
Modern Farmhouse
Metal Roofing
Green With Envy
Modern Farmhouse

+41

Response time12 hrs
2 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Prestige Roofing & Construction LLC
Prestige Roofing & Construction LLC
5.0(
61
)

Serving Dover, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"We hired Prestige Roofing& Construction to fix our leaky roof . They were very knowledgeable on all aspects of roofing and got our roof problem rectified in a really quick time"
Chimney Repair
New steps
Roof replacement
Steps Rebuilt
Steps Rebuilt

+3

Response time4 hrs
Response rate98%
14 neighbors recently requested a quote
Avatar for Skyline Construction Group
Skyline Construction Group
4.9(
84
)

Serving Dover, NJ and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Contacted Skyline Construction Group after a leak appeared in my roof. Fast response, honest genuine help and advice. Came back the same day to fix the problem. Would highly recommend their services. Thank you Skyline Construction Group."
Response time10 hrs
Response rate93%
7 neighbors recently requested a quote
Avatar for Pro Master Construction NJ, LLC
Pro Master Construction NJ, LLC
5.0(
129
)

Serving Dover, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Pro Master Construction recently repaired my roof, and I am very impressed with their work. They were professional, efficient, and thorough. The repair was done quickly and the roof looks as good as new. I highly recommend Pro Master Construction for any roof repairs!"
Before
Before
Before
Before
After

+71

Response time6 hrs
Response rate97%
241 neighbors recently requested a quote
Avatar for Monarch Roofing LLC
Monarch Roofing LLC
5.0(
198
)

Serving Dover, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"I was most satisfied with the job quality for our replacement roof. Thanks a lot Monarch Roofing team. I will definitely call you again for any roofing and masonry needs."
Response time11 hrs
2 neighbors recently requested a quote
Recommended by97%of homeowners
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Roofing questions, answered by experts

The best material to sheath a roof will depend on your budget and if you require the strength of more robust materials. For most homes, the added strength is unnecessary, and oriented strand board, or OSB, makes sense. It’s inexpensive and robust enough for most roof types. Another popular but slightly more expensive option is plywood.

The principal, common, and auxiliary rafters are the most frequently used types of rafters. Principal rafters are large and typically appear toward the edges of the roof. Common rafters are smaller than principal rafters. Some people may use a mix of common and principal rafters. The auxiliary rafter is not common, but it provides extra reinforcement for a principal rafter on a large building.

Manufacturers, insurance companies, and municipality regulations are phasing out three-tab shingles. Because of their short lifespan and lack of durability compared to other roofing material types, manufacturers are leaning toward better products, and cities and insurers are starting to require better building materials overall. However, 3-tab shingles are still for sale, and some roofing companies still install them.

Roof blistering and hail damage are different in their physical appearance. Blistering, often caused by inadequate ventilation, low-quality material, and improper installation, looks like large, irregular bubbles popping out of your roof. Meanwhile, hail damage is usually circular or oval dents entering your roof and often follows the same path as the hail storm.

While it’s technically possible to repoint a chimney without scaffolding, it’s not recommended, especially for taller chimneys. Scaffolding provides a stable platform that allows for safer and more precise work. Without it, you might find yourself in a risky situation, and the quality of the repointing could suffer.

The Dover, NJ homeowners’ guide to roofing services

From average costs to expert advice, get all the answers you need to get your job done.