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Best roofers near Alton, NH

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TRUSTED BY ALTON, NH HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon244
    Verified roofing services reviews

Top-Rated Roofers in Alton - Updated Nov 2026

Avatar for Jalbert Contracting, LLC
Jalbert Contracting, LLC
4.9(
37
)
Asphalt Shingle Roofing - Install or ReplaceAsphalt Shingle Roofing - Install or Replace - For Business

Serving Alton, NH and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I was totally satisfied with the roofing project. I got 3 bids and this company's proposal was the most cost effective. It was also right in line with my cost expectations due to other roofing projects that I had done elsewhere. He also kept in touch with me as to timing as roofing shingles had some delivery issues due to the pandemic. Once he started, his crew was in and out in a single day with no disruptions to me. Upon inspection, it was a thorough job and I've very satisfied and will reach out to the company for other projects. I highly recommend Jalbert Contracting."
Stain Revamp
Stain Revamp
Response time1 day
18 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for JP Carroll Roofing - Boston
JP Carroll Roofing - Boston
4.8(
20
)
Asphalt Shingle Roofing - RepairAsphalt Shingle Roofing - Install or ReplaceInspection - Roofing

Serving Alton, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Warranties offered

"Kevin and his crew showed up early and got right to work. Finish product is looking great. There was a small issue with a few of the baffles in the attic not being secured correctly and Kevin took care of it quickly. Would definitely recommend JP Carroll."
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing

+14

141 neighbors recently requested a quote
Avatar for OTB REMODELING
OTB REMODELING
5.0(
16
)
Metal Roofing - Install or ReplaceAsphalt Shingle Roofing - Install or Replace

Serving Alton, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Really needed a new roof after this winter. These guys were knowledgeable and got me on their schedule relatively fast. Workmanship was high quality and the crew was extremely professional. Absolutely will call again when it is time to replace my siding."
Front
Back
Side 1
Side back
After

+21

Response time9 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for New England Roofing Services
New England Roofing Services
4.3(
7
)
Asphalt Shingle Roofing - RepairMetal Roofing - RepairFlat, Foam or Single Ply Roofing - Repair+7 more

Serving Alton, NH and surrounding areas

Approved

In business since 1994

Free estimates

Offers commercial services

"Excellent team and communication for our roof project. We needed someone to repair our roof that has shingles thats been needing repair and they were able to deliver and spring into action within a day ! It was perfect as the rains were coming and the damage to our roof would have gotten worse. From the time I first communicated they were able to arrive and give us an estimate and work with our insurance company (which was not easy) in the same day. Highly recommend this company ! Thank you"
Response time9 hrs
Response rate100%
55 neighbors recently requested a quote
Avatar for Adam Vaillancourt Roofing & Gutters - Milford
Adam Vaillancourt Roofing & Gutters - Milford
4.9(
13
)
Asphalt Shingle Roofing - RepairAsphalt Shingle Roofing - Install or ReplaceHeating Cable for Roof - Install+6 more

Serving Alton, NH and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2004

Free estimates

Small jobs welcome

"Called Adam Vaillancourt Roofing to fix a leak in our roof based on their consistently high customer satisfaction ratings. We met with sales rep Jose Luna, who conducted a thorough inspection and found the leak easily. His presentation about the company and how they do their work was impressive and Jose was very professional and included a video that Jose shot while on our roof in which he explained not just the issues that were found but WHY the work was needed. He never pressured us into agreeing to anything. We signed a contract immediately. Fast forward a few weeks later and Paul Camarro and his crew showed up at the house on time and ready to work. When they were done, Paul showed us photos of the completed repair work, so I knew they delivered as promised. We will absolutely be calling Vaillancourt in a few years when our roof needs to be replaced. Highly recommend!"
During
During 2
Before
After
After

+7

Response time12 hrs
Response rate100%
80 neighbors recently requested a quote
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Roofing FAQs, answered by experts

Before hiring a roofing contractor, it's wise to ask several key questions. Inquire if they are licensed for roof replacement and repair and if they hold any special certifications. Ask if they will be completing all the work themselves or subcontracting parts of it. It's also important to understand the project timeline, whether they will remove the old roof or place new shingles on top, and how they will handle cleanup after the project is complete. Finally, ask about warranties for both work and materials, what recourse you have if issues like leaks arise, and if they can provide customer references.

Generally, the term “rolled roofing” refers to MSR (mineral surface roll) roofing. This type of roofing is similar to asphalt shingles but comes in a roll that’s unraveled and installed over your roof deck. There are many types of rolled roofing, including TPO, EPDM, and modified bitumen roofing (aka torch down roofing).

Most manufacturers’ warranties do not cover wind damage to roof shingles, but some companies include a wind warranty rider in their warranty offer. You can purchase this rider to protect yourself, your wallet, and your roof from any damage that might occur from wind. Be sure to read all the fine print and understand any limitations of the warranty.

In most cases, no, roofers won’t need to come inside. Some reasons roofers may need to come inside are to assess ventilation. inspect roof leaks, or check for any structural concerns.

Yes, copper roof strips can help prevent shingle damage and are an alternative to algae-resistant shingles. They work in a similar way: they release copper ions that interfere with algae, moss, and other plant growth. Algae feeds on limestone in your roof shingles, and moss can uplift shingles and increase the risk of leaks. If you have issues with algae or moss on your roof, copper roof strips can help avoid damage.

The Alton, NH homeowners’ guide to roofing services

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