Waterproofing Contractor in Houston, TX

What we waterproof

Foundation and below-grade waterproofing: sealing and membranes on foundation walls and below-grade surfaces where hydrostatic pressure pushes moisture through concrete.

Exterior wall waterproofing: sealing the wind-driven rain intrusion points on the outside of the building — around windows, at penetrations, at failed sealant joints and masonry.

Crawl space waterproofing: ground vapor barriers and moisture control under pier-and-beam homes, the single highest-value fix for a wet Houston crawl space.

Concrete waterproofing: penetrating and film-forming sealers for slabs, walls, and foundations.

Deck and balcony waterproofing: traffic-grade coatings over living space, where a leak means water in the room below.

Commercial waterproofing: coatings, sealing, and flood protection for commercial buildings.

Wall leaks and where water gets in

A wall leak in Houston is almost always wind-driven rain finding a path, not the wall itself failing. The usual entry points are the top and sides of windows, failed caulk at trim and control joints, penetrations for hose bibs and vents, and — on brick — weep holes that have been painted or mortared shut so the wall can't drain.

Like a roof leak, wall water travels before it shows, so the stain inside is downhill of the entry point outside. We find and seal the actual path — re-flashing, re-caulking, sealing penetrations, and coating the surface where needed — rather than painting over the inside and watching it come back with the next storm.

Waterproof coatings and membranes

Different surfaces need different systems, and using the wrong one is why coatings fail early here.

Decks and balconies over living space get a traffic-grade waterproof coating — a flexible membrane that takes foot traffic and moves with the substrate instead of cracking. This is the fix when the room under a second-floor balcony keeps getting wet.

Concrete gets a penetrating sealer or a film-forming coating depending on whether it's a slab, a wall, or below grade.

Below-grade and foundation surfaces get a membrane built to hold back moisture under pressure.

We match the coating to the surface, the exposure, and whether there's living space below — and we tell you when a coating alone won't solve a problem that's really about drainage.

How to prevent flooding — door barriers and flood vents

You can't stop a true flood, but you can keep a lot of water out of the house and give the rest somewhere to go. To prevent flooding in your house, the practical steps are sealing the low openings water comes through and controlling where it collects: deployable flood barriers across doorways, sealed and raised thresholds, and sealing the wall penetrations near grade. Behind that, site drainage has to carry water away from the foundation in the first place.

To keep water out of a garage — usually the lowest opening on the house — a flood barrier across the garage-door opening, a raised threshold and door seals, and grading the apron to fall away from the door are what actually work.

Flood vents are the other half: in flood-prone areas, code-recognized flood vents let rising water pass through an enclosed space and equalize pressure, so the water doesn't build enough force to push a wall in. We install flood barriers for doors and flood vents as part of a flood-protection plan.

How to raise appliances above flood level

In a flood-prone home, getting the mechanical equipment up off the floor turns a few inches of water from a full appliance-replacement into a mop-up. The fix is a built platform or masonry pedestal that raises a water heater, washer and dryer, or an air handler above the expected flood level.

We build the elevated platforms and framing that get those units up off the slab. Disconnecting and reconnecting the appliances themselves is a separate trade and outside our scope — so that gets coordinated separately — but the structure that holds them up is exactly what we do.

What waterproofing costs in Houston

Pricing depends entirely on the scope. Deck and balcony traffic coatings and concrete sealers are generally priced per square foot. Exterior sealing and wall-leak repair are priced by the number of entry points and how much access and prep is involved. Foundation and below-grade waterproofing runs higher because of excavation and membrane work. Flood barriers and vents are priced per opening or per unit.

What moves the number: how much surface area or how many openings, access and prep, whether the fix is a coating or a full membrane, and whether drainage work has to happen alongside it. These are ranges, not quotes — we price after walking the property and finding where the water is coming from.