Keystone Masonry and Chimney,Foundtaion Waterproofing, 77 Prentice St, Waltham, MA 02451
Unclaimed

Keystone Masonry and Chimney,Foundtaion Waterproofing

5.0 4 reviews Masonry Contractor
📍 Waltham, MA 🕘 Open today -
Overview

About this business

Keystone Masonry and Chimney,Foundtaion Waterproofing is a locally owned and operated masonry and chimney repair business serving Somerville, MA, Medford, MA, and nearby communities. Keystone Masonry and Chimney provides core services including chimney repair, masonry work, repointing, retaining walls, stairs and steps, and foundation waterproofing. With over 30 years of experience, Keystone Masonry and Chimney features licensed and insured technicians skilled in concrete and foundation repairs, chimney leak repair, chimney sweeping, and waterproofing. The business supports a wide service area including Boston, Cambridge, Lexington, Waltham, and more, and operates with a professional team dedicated to quality workmanship and customer service.

Masonry Contractor

Services

Services and categories listed for this business.

Chimney Repair Masonry Repointing Retaining Walls Stairs and Steps Foundation Waterproofing Concrete and Foundation Repair Chimney Leak Repair Chimney Sweeping

Location

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Get directions
Address 77 Prentice St, Waltham, MA, 02451
Phone (617) 586-3577
Questions & answers

Helpful answers

Quick answers from this business profile.

What services does Keystone Masonry and Chimney,Foundtaion Waterproofing provide?
Keystone Masonry and Chimney,Foundtaion Waterproofing provides chimney repair, masonry, repointing, retaining walls, stairs and steps, foundation waterproofing, concrete and foundation repair, chimney leak repair, and chimney sweeping services.
What areas does Keystone Masonry and Chimney,Foundtaion Waterproofing serve?
Keystone Masonry and Chimney,Foundtaion Waterproofing serves Somerville, Medford, Boston, Cambridge, Lexington, Waltham, and many surrounding communities in Massachusetts.
How much experience does Keystone Masonry and Chimney,Foundtaion Waterproofing have?
Keystone Masonry and Chimney,Foundtaion Waterproofing has over 30 years of experience in masonry, chimney, and foundation repair services.
Is Keystone Masonry and Chimney,Foundtaion Waterproofing licensed and insured?
Yes, Keystone Masonry and Chimney,Foundtaion Waterproofing is licensed and insured.

Reviews

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4 reviews
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J

James Casey

Mar 4, 2026
5.0

An amazing experience with the keystone masonry team rebuilding my chimney from inside our attic really impressed with how clean they kept everything although some minor dust was inevitable. They did a great job and cleaning completion.

J

Jerrilyn Mitrano

Oct 8, 2024
5.0

I am in the process of purchasing a home. I was referred by a friend to contact Keystone masonry I called and asked them to go look at the foundation on the property. They went right out there and sent me pictures with a very fair estimate. I will definitely have them do this work for me. It’s comforting to know that I’m dealing with a company who has a very good reputation and the way I was treated to know they don’t even know me. I just called and they went right out that is a huge plus.

M

Manish Gala

Feb 13, 2026
5.0

James from Keystone did a great job with replacement of our old Chimney Cap. He provided a fair estimate for the replacement along with Chimney sweep. His team was quick and efficient and the also repaired the flashing where needed. Extremely pleased with the work and professionalism and will use them again for any masonary work!

D

Douglas Flynn

Oct 31, 2025
5.0

I met James from Keystonemasonry with the expectation that I would have my front stairs repaired. What I soon found out the my stairs were way worse than I thought. I had a safety issue along with looking very bad. James came up with a fair budget and the team went to work. A team of mostly three re-built my stairs. Straight, neat, and done in three days. I made a great decision going with Keystone Masonry, and will not hesitate to use them again. Also, the cleanup after a giant pile of brick and cement was outstanding.

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