
Under Tile Waterproofing
Membrane systems installed beneath tile
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Waterproofing & Coatings


Waterproofing, deck coating, and epoxy floor systems for Bay Area homes and commercial property — installed by a crew that diagnoses the real problem before specifying a single product.
Eleven systems covering everything from a shower pan to a parking deck — each specified around the substrate, the exposure, and the water you are actually dealing with.

Membrane systems installed beneath tile
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Protection sandwiched between structural pours
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Sealing constantly wet retaining structures
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Positive-side protection under hydrostatic pressure
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Traffic-rated coatings for parking structures
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Interior and injection solutions, no digging
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Protecting the structure everything sits on
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A hard, sealed, easy-to-clean garage slab
View Epoxy Coating for Garage Floors details
Six things that separate a waterproofing job you never think about again from one you are calling someone back to look at next winter.

Water almost never enters where the stain shows. We use electronic detection, moisture mapping, and controlled water testing to find the real entry point — so you are paying to fix a cause, not cover a symptom.
Positive-side membrane, negative-side coating, injection, or drainage — each solves a different problem. We specify around your actual conditions instead of defaulting to one product for every job.
Diamond grinding instead of acid etching. Moisture testing before coating. Surfaces profiled and primed before membrane. Nearly every failure we are called to repair traces back to skipped prep.
Parking decks and podium slabs on one side, basements and garage floors on the other. The same standards apply to a 400-stall structure and a single-family foundation.
Flood tests before tile. Electronic leak detection before a topping pour. Photo documentation of what we found and what we fixed, handed over for your records.
Interior work is right for many Bay Area lots and wrong for others. If excavation is genuinely the better long-term answer, we will tell you that — even when it is the harder sell.
Serving San Francisco Bay Area & the Peninsula within a 60-mile radius.
Feedback from homeowners, property managers, and general contractors we have waterproofed for across the Peninsula and South Bay.
We work across the Peninsula, the South Bay, and San Francisco — a 60-mile radius covering everything from single-family foundations to commercial parking structures.