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Top-Rated Natural slate roofing repairers in Merrimack - Updated Nov 2026

Avatar for Small Dog Roofing
Small Dog Roofing
5.0(
21
)
Natural Slate Roofing - Repair

Serving Merrimack, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Outstanding workmanship and well managed project leader. Attention to detail and great customer service. Highly recommend Small Dog Roofing for all of my and my clients needs."
Full roof replacement
Full roof replacement
Full roof replacement
Full roof replacement
Full roof replacement

+29

Response time2 hrs
Response rate100%
11 neighbors recently requested a quote
Marquis Roofing
4.8(
30
)
Natural Slate Roofing - Repair

Serving Merrimack, NH and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Marquis Roofing did a fantastic job on our roof. The job was completed in one day. Tom Marquis's crew was professional, highly qualified and courteous. Once completed, the job site was completely cleaned of any building material and nails. I would absolutely hire Marquis Roofing again should I ever need another roof job done."
beautiful but tricky
beautiful but tricky
beautiful but tricky
Additional Photos
Additional Photos

+104

Recommended by100%of homeowners
Avatar for Tar Star Roofing
Tar Star Roofing
4.9(
77
)
Natural Slate Roofing - Repair

Serving Merrimack, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I had a bad leak in my slate roof. The Tar Star owner Anthony called and came the next day. Saw what was needed, understood my money concerns gave me a price I could live with and started work at 7;30 the next day which was a Saturday. I could not be happier with.the quality of work and would recommend Tar Star Roofing any time."
Response time10 hrs
Response rate97%
16 neighbors recently requested a quote
Avatar for MR. Bs Roofing LLC
MR. Bs Roofing LLC
4.8(
24
)
Natural Slate Roofing - Repair

Serving Merrimack, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"I got an estimate very quickly on the repair and a general assessment of the state of the roof. Mr B's was only one of two roofing contractors that I called that would even do a repair, and Mr B's was the more prompt and better estimate. While very busy, he was able to fit me in sooner than originally estimated, and did a great job. I'm very happy and will call them again when more work is needed."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+41

Recommended by100%of homeowners
Avatar for Pellegrino Construction
Pellegrino Construction
4.9(
27
)
Natural Slate Roofing - Repair

Serving Merrimack, NH and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"The roof was in line with everybody else's price. It may have been a little bit more expensive but we liked dealing with the guy. They were super clean, they knew we had pets so they were aware of  the nails and such so the ones that got away were like about 3 and they were quick. They were really professional and I had a really god experience with them."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Recommended by96%of homeowners
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FAQs for natural slate roofing repair projects in Merrimack, NH

If more than 30% of your slate roof is damaged, it's time to consider a full replacement. This will prevent further deterioration and avoid costly recurring repairs. A professional slate inspection (costing between $130 and $360) can confirm whether repairs are sufficient or if a full roof replacement is the better option.

A slate roof can last anywhere from 60 to 150 years, depending on factors like installation quality, regular maintenance and repairs, and local weather conditions. Compared to materials like clay and concrete, which often last around 50 years, a well-maintained slate roof offers superior longevity, durability, and long-lasting aesthetic appeal.

Yes, you can use temporary patch solutions, such as roofing cement or patchwork, to provide immediate relief for minor leaks or underlayment issues observed from inside your home. However, these provisional fixes do not replace the need for a permanent, professional exterior repair, which is necessary to ensure the long-term integrity and weather resistance of your slate roof.

The Merrimack, NH homeowners’ guide to natural slate roofing repairs

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