• Caulking and Waterproofing
  • Historical Preservations
  • Exterior Building Maintenance
  • Parking Garage and Deck Coatings
  • Metal Restorations and Repair
  • Materials: GFRC, Brick, Plaster, Wood, Stone, Tile, Brownstone, Precast, and Terra Cotta


BAY Contracting is a 20+ year old company based in Waltham, MA. We’ve built our success in the highly competitive New England restoration, waterproofing and building maintenance markets by providing premier customers and contractors with innovative materials supported with strong engineering and precision craftmanship.

We specialize in masonry and concrete and also work with a wide variety of other materials to suit each project. Our work graces some of the most prestigious buildings in the Boston area and we are recognized and respected by customers and competitors alike for the high quality of our materials and workmanship and for our steadfast honesty.

BAY Contracting partners with leading materials manufacturers to produce durable elements and structures that have proven to withstand the rigors of one of the harshest environments in North America.

Our materials expertise ranges from GFRC (glass fiber reinforced concrete) and UHPC (ultra-high-performance concrete) to brick, concrete and stone allowing us to build, repair, strengthen, replace or waterproof virtually any type of exterior building element.

Our crew of over 60 craftspeople has greatly valued skills and expertise with the majority having worked for us for 15+ years.

We look forward to helping you with your next project.

Brain Keane

Brian Keane

Brian Keane has a BS in Structural Engineering and years of hands-on experience in the masonry trade. He formed BAY Contracting with the goal of not only competing with the best, in what is one of the most competitive industries in Boston, but also differentiating his services from all others. Brian and his crew are now into their 21st successful year offering their customers the very highest quality craftsmanship combined with honest, long term relationships.