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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

Verified Reviews for Roofing pros in Alton, NH

*The Angi rating for Roofing companies in Alton, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Roofing needs.

*The HomeAdvisor rating for Roofing companies in Alton, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Roofing needs.

Last update on November 30, 2025

Top-Rated Roofers in Alton - Updated Nov 2026

Avatar for Long Home
Long Home
4.3(
96
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or Replace

Serving Alton, NH and surrounding areas

Approved

In business since 1945

Free estimates

Warranties offered

"Excellent work and lifetime warranty . Highly recommend Long Roofing."
304 neighbors recently requested a quote
Recommended by84%of homeowners
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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 did a fantastic job on my roof and also did an awesome job cleaning up after themselves. I Haven t found a nail or old shingle anywhere. If it wasn t for the new roof I wouldn t have known they where there. They also do other projects and I will contact them for any other work I need. I highly recommend Brian and his crew."
Stain Revamp
Stain Revamp
Response time1 day
18 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Revive Roofing & Siding LLC
Revive Roofing & Siding LLC
4.5(
44
)
Asphalt Shingle Roofing - RepairAsphalt Shingle Roofing - Install or ReplaceHeating Cable for Roof - Install+14 more

Serving Alton, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Quality firm that does great work. They put a new roof on 12+ years ago and recently came out to give us a "tune-up". Cement roof tiles. Looks like new. No issues and very responsive. Good folks."
winsor NH
winsor NH
winsor NH
winsor NH
winsor NH

+40

Response time8 hrs
Response rate100%
42 neighbors recently requested a quote
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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

"Would I recommend JP Carroll roofing absolutely. They all were very hard workers. From start to finish. Bent over backwards to help on any thing you ask them to do."
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing
JP Carroll Roofing

+14

141 neighbors recently requested a quote
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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

"They do not install standing seam metal roofing."
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT
Pomfret Center, CT

+4

Response time9 hrs
43 neighbors recently requested a quote
Recommended by94%of homeowners
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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
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Avatar for Paragon Exteriors, LLC
Paragon Exteriors, LLC
4.8(
5
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or ReplaceAsphalt Shingle Roofing - Install or Replace - For Business+10 more

Serving Alton, NH and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Paragon Exteriors was prompt on giving me a quote. They arrived next day and completed job in timely fashion. Could not be happier! Thank you Anji!"
Response time1 day
Response rate99%
7 neighbors recently requested a quote
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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

"Kevin and his team were professional, friendly and did a great job cleaning the moss and pine needles off the roof and gutter guards."
Response time9 hrs
Response rate100%
55 neighbors recently requested a quote
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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

"This team took the time to really understand leaky roof problem before considering the repairs."
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

Furring strips (also called wood stripping) are not always necessary for a metal roof installation, but they are highly recommended and may be required by local building codes or the roofing manufacturer's specifications. There are several key reasons to use them:

  • Energy Efficiency: Furring strips, made of wood or metal, create an air gap between the metal panels and the roof deck. This acts as a thermal break, reducing heat transfer into your home and improving overall energy efficiency.

  • Moisture and Condensation Control: The air gap allows for better airflow, which helps prevent moisture buildup and condensation under the metal panels.

  • Structural Support: They provide a solid, even frame to which you can attach the metal roofing panels.

It is especially important to use furring strips when installing a metal roof over existing shingles. Without them, the roof surface can be uneven, and you will experience greater solar heat gain.

The minimum recommended slope for a porch roof is 1/4:12, which means 1/4-inch of rise every 12 inches of run. Slopes of 3:12 and 4:12 are more common and provide faster drainage for runoff. Make sure to choose a pitch that’s appropriate both for the climate in your area and the type of roof material you install. Hire a roofer if you need help determining what the right roof pitch is.

Tile roofing is durable, fire-resistant, and energy-efficient. It also adds aesthetic appeal and, with proper maintenance, can last 50-100 years.

Roofing estimates vary for many reasons, but the most significant ones include differences in the cost of labor based on the contractor’s experience and overhead costs, as well as the quality of the materials your roofer will use for the job. You should get your estimates itemized and make sure your contractors include details about the materials they plan on using. Doing so allows you to compare not only based on the cost but also the value that you’ll get for your money.

There are several signs that indicate you’ll need new underlayment. Clear signs include missing or damaged roofing and exposing the underlayment to the elements. Additionally, if you notice water damage in your home by the roof after a storm, it could indicate that your underlayment may need to be replaced. If your gutters aren’t draining properly, it could also lead to rotting or water damage to the underlayment.

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.

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