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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

"Brian and his crew worked really hard and finished my roof in one day despite a rain delay. They did an excellent job and when they were done everything was back in place and cleaned up. My roof looks fantastic and I know it is one less thing I need to worry about."
Stain Revamp
Stain Revamp
Response time1 day
17 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

"JPCarroll did a fabulous job on replacing my complicated, decrepit Victorian roof, completing it in a timely way and against adversity – they did the whole thing in the month of January in freezing temperatures and sometimes snow and ice. I interviewed five other roofers. However, their sales person took more time and provided far more specificity than any of the other others. Their bid was not the cheapest but turned out to be the best value by far. They went the extra mile to resolve many unforeseen problems, and the quality of work was high. Everyone I dealt with, owners, staff, and laborers, were courteous and responsive throughout. The job supervisor, Kevin, was thoughtful and included me on numerous decisions. Luke Carroll, production coordinator for the job, was always available to help, as was everyone else, even on weekends. They coordinated well with my carpenter, replacing a significant amount of trim, siding, and more as a team. The people doing the actual labor worked"
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing

+14

145 neighbors recently requested a quote
Avatar for East Coast Metal Roofing, LLC - New Hampshire
East Coast Metal Roofing, LLC - New Hampshire
4.4(
32
)
Metal Roofing - Install or Replace

Serving Alton, NH and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"I knew from the start I wanted a metal roof and that I wanted the Permalock product for its quality and durability, and that it looked like the shingle roof we had. The lifetime guarantee and product sold me. The roofers were great, and every night the place was cleaned up, very efficient company."
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT

+4

Response time9 hrs
40 neighbors recently requested a quote
Recommended by94%of homeowners
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

"OTB was great to deal with. Wind storm ripped half the shingles off of my garage, Chris came out the next day to give me a quote. Price was excellent and the job was done a week later. His contractor was well informed and professional, and left my home looking better than ever. I would highly recommend using them for any project."
Front
Back
Side 1
Side back
After

+21

Response time9 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Paragon Exteriors, LLC
Paragon Exteriors, LLC
4.8(
5
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or ReplaceMetal Roofing - Repair+10 more

Serving Alton, NH and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

As a family-owned and operated construction and roofing company, we take immense pride in our legacy of delivering top-notch services with a personal touch. With 20+ years of industry expertise, we have cultivated a reputation for excellence, reliability, and unparalleled customer satisfaction. \n \n \n \nOur dedicated team of skilled professionals are not just committed to the construction of your homes or buildings; we are committed to building lasting relationships with our clients. From residential roof construction to large-scale commercial projects, we approach each endeavor with passion, precision, and a genuine commitment to exceeding expectations. \n \n \n \nAt Paragon Exteriors, we believe in consistently building higher expectations and transforming visions into realities, one project at a time. Choose us for your construction and roofing needs, and experience the difference that family values and quality craftsmanship can make.

Response time1 day
Response rate99%
8 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%
84 neighbors recently requested a quote
DaBella - Salem (Roofing)
3.5(
622
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or ReplaceAsphalt Shingle Roofing - Repair+4 more

Serving Alton, NH and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Our project is scheduled for completion. The initial phase of receiving an estimate and securing financing has been very smooth and easy. Maddy Delisle was extremely attentive and patient working with us getting the project through the financing phase. She went above and beyond in answering our numerous questions. If you have a roofing or home improvement project ask for Maddy."
11 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Clear Choice Home Improvements, LLC
Clear Choice Home Improvements, LLC
4.5(
980
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or Replace

Serving Alton, NH and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"I'm a return customer. They did our replacement windows a few years ago, and they just replaced our asphalt roofing shingles. They did a wonderful job. I was amazed and impressed with how quickly, and how well, they completed the job. I love my new roof."
 Insulated Vinyl Siding
 Seamless Gutters
 Easy to clean vinyl replacement windows
  Asphalt Roofing
 Leaf Slugger Gutter Covers and Water Management

+114

Response time2 hrs
223 neighbors recently requested a quote
Recommended by91%of homeowners
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Roofing FAQs, answered by experts

A cool roof can be worth it in the right climate. Cool roofs are excellent at reflecting solar heat away from your home, so if you live in a warm or hot climate, they can be a great roofing choice. Some cool roofing materials are even eligible for tax credits. However, they cost more than traditional roofing and don’t retain heat as well as traditional roofing, so they’re not ideal if you live in a cold climate.

A roof can collapse from a leak if the leak is left unattended long enough. A collapse will happen when the structural components of your roof become saturated with water over time. The roof deck or rafters can slowly weaken until they can no longer support the weight of your roof.

Once framing is complete, you will need the following materials to roof a house:

  • Wood sheathing

  • Drip edge, a.k.a metal flashing

  • Underlayment for waterproofing

  • Roof covering, like metal or asphalt shingles

The roof overhang, also known as the eaves, does count as part of the roof’s square footage because it must be covered with the roofing material. The overhang is one of the reasons why you can’t base your roof's square footage on the square footage of the house. The roof square footage must also account for the pitch of the roof as well as the eaves.

Yes, many contractors offer warranties for their work. Confirm terms before hiring.

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.