Mac Construction
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Are you tired of searching for the elusive combination of affordability and capability in your contractor? Are you looking for experience, quality, professionalism and a waterproofing company that you can trust? Look no further! At Division Seven we offer honest, reasonable, and reliable services and have established ourselves as North Bay Area's premier Waterproofing Contractors.

For exceptional solutions to your residential and commercial water intrusion issues, trust our licensed professionals to do your job right the first time. We have over 28 years of experience and have been in business since 1990. Whether your home or office is suffering from cracks, exterior drainage, or any other problem related to inadequate waterproofing, we have the resolve and the resources to solve just about any sized challenge.
Services
For underfloor slabs on grade in a below grade condition, Division Seven 1st performs a site review to verify the subsurface drainage has been put in properly. We then install a pre-applied waterproof membrane system which forms a chemical bond to the concrete when it is placed. Below grade foundation walls are cleaned and primed.
Waterproofing a deck over a living space requires one vital result - no leaks. Division Seven conducts a site review and visually inspects all deck substrates prior to installing our waterproofing. We apply multi-coat, 2-component urethane waterproofing systems that have excellent durability and waterproofing characteristics.
Reviews (1)
Clough Construction
Clough Construction
Jan 14, 2020
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Responsive, Prompt, and Extremely Competent!
Mac helped us obtain a permit and did a fantastic job at one of our recent projects. We were very happy with the experience.
Divison Seven has earned it's stripes with decades of experience. Thank you!