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TRUSTED BY THIELLS, NY HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon416
    Verified roofing services reviews

Top-Rated Roofers in Thiells - Updated Nov 2026

Avatar for Dalmatia Roofing
Dalmatia Roofing
4.9(
70
)
Asphalt Shingle Roofing - Install or Replace

Serving Thiells, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Emergency services offered

"After a bad experience with another contractor, I turned to Dalmatia Roofing. Paul & his crew were different professional, efficient, and dedicated to quality. They restored my trust in roofing services, and I'm grateful for their help."
Roofing Projects
Roofing Projects
Roofing Projects
Roofing Projects
Roofing Projects

+12

Response time6 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for A&GJ Construction
A&GJ Construction
4.8(
156
)
Asphalt Shingle Roofing - RepairTraditional Tile Roofing - RepairNatural Slate Roofing - Repair+5 more

Serving Thiells, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"called Arian about a roof repair, he came next day . He gave me a good estimate for the repair, after discussing the repair we talked about a new roof because the roof was over 30 years old. He gave me a good price. He and his 5 guys came 2 days later. They finished the job in 6 hours did a good job at a fair price and left the property in clean condition"
Vent on the roof
Vent line on roof
Ventilation on the roof Garden City
Ventilation on the roof Garden City
Vent on the roof

+107

Response time7 hrs
Response rate94%
92 neighbors recently requested a quote
Avatar for Prime Roofing LLC
Prime Roofing LLC
5.0(
9
)
Asphalt Shingle Roofing - Install or ReplaceAsphalt Shingle Roofing - Repair

Serving Thiells, NY and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

At Prime Roofing, we are a trusted roofing company in Rockland County and Westchester County, we offer affordable roofing solutions without compromising on quality. Our expertise includes flat roof installations, commercial roofing, slat roof installations, cedar shake roofing, storm damage restoration and metal roof installations. Whether you need a durable solution for your home or a reliable roof for your business, our skilled team ensures every project is completed with precision and care. Trust us to protect your property with the best roofing solutions available.

Prime Roofing LLC
Prime Roofing LLC
Prime Roofing LLC
Prime Roofing LLC
Prime Roofing LLC

+15

14 neighbors recently requested a quote
Avatar for GM1 Construction LLC
GM1 Construction LLC
4.9(
45
)
Asphalt Shingle Roofing - RepairAsphalt Shingle Roofing - Repair - For BusinessFlat, Foam or Single Ply Roofing - Repair+3 more

Serving Thiells, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Jason and his crew sealed my 3-season room roof and they also did some repairs to my chimney. I couldn’t be happier with the results. Jason and his crew were professional, punctual and incredibly skilled. I highly recommend GM1 to anyone in need of roofing in need of roofing or chimney services. I can rest easy tonight knowing that my roof will no longer leak. Thank you for a job well done!"
Old pipe flashing
Pipe flashing
New pipe flashing
REBUILD NEW BRICK CHIMNEY
REBUILD NEW BRICK CHIMNEY

+20

Response time4 hrs
Response rate98%
85 neighbors recently requested a quote
Avatar for Precision Roofing, Inc.
Precision Roofing, Inc.
4.7(
22
)
Asphalt Shingle Roofing - RepairFlat, Foam or Single Ply Roofing - Repair- For BusinessMetal Roofing - Repair+11 more

Serving Thiells, NY and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"We contracted with Precision Roofer to replace our roof. Their representative, Mr Venezia, went over all aspects of the job in his presentation addressing our concerns. The work crew arrived on time and skillfully replaced our roof, afterwards throughly cleaning up all debris. The job was completed in one day. We highly received Precision Roofing ."
Work
Work
Work
Work
Work

+48

Response time1 day
Response rate87%
36 neighbors recently requested a quote
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Roofing FAQs, answered by experts

The most common defect in a flat roof is leaking. Flat roofs have minimal slope, so water pools more readily on a flat roof than on a sloped roof, and the risk of the waterproof membrane failing increases with exposure. Tears and punctures from foot traffic and blown debris are other common problems, especially with single-ply roofing membranes like TPO and EPDM roofs.

An insulated garage benefits from roof vents to ensure proper ventilation and prevent moisture buildup. Insulation can trap moisture in the garage, especially during temperature fluctuations, and roof vents play a crucial role in expelling the moisture in the air. Including roof vents promotes air circulation, preventing condensation and enhancing overall air quality.

Roofing felt is the most common type of roof underlayment, likely because it has been around the longest. It’s called roofing felt because it is often made of felt soaked in asphalt. Depending on the type of roofing a home has, roofing felt comes in different thicknesses. 

If properly installed and maintained, roofing felt should last between 10 and 25 years. 

Tar and gravel roofs last an average of 30 years, which is longer than the average lifespan of many other flat roofs. The gravel on top of the waterproof membrane helps protect the roof from UV damage and physical damage, so if you keep your roof drains clear and carry out annual roof inspections to catch issues early, you could see up to 40 years of useful life from your roof.

While you can technically install TPO roofing over an existing roof, it isn't always wise to do so. The more layers of material you add to your roof, the more weight it must support. You may also develop moisture issues by covering your existing roof with TPO. Your local building codes and regulations may actually require you to remove the existing roof before adding TPO, so check with your local municipality.

The Thiells, NY homeowners’ guide to roofing services

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