Keystone Foundation & Waterproofing

Keystone Masonry and Chimney is a masonry contractor located in Waltham, MA, United States. The company offers a range of services, including masonry repointing, retaining walls, stairs and steps, chimneys, chimney repair, waterproofing, basement and foundation work, and roofing/siding. The team has over 30 years of experience and provides exceptional customer service, with a focus on quality workmanship and competitive prices.