Concrete Waterproofing & Sealing in San Marcos, TX
San Marcos Custom Concrete provides concrete waterproofing and sealing services in San Marcos, TX. We help protect concrete surfaces from moisture, cracks, stains, and daily wear. We provide concrete sealing services, waterproof concrete coatings, and concrete moisture protection for business and home properties. Our work helps keep concrete looking better and lasting longer through proper prep and solid sealing methods. We focus on protecting driveways, patios, walkways, slabs, and other concrete areas.
With years of hands-on experience, San Marcos Custom Concrete has completed concrete protection projects with careful surface prep and proven sealing products. We have built our experience serving areas like Buda, New Braunfels, Wimberley, and Canyon Lake. Our work includes helping property owners with concrete upkeep, sealing, and waterproofing needs. We bring local knowledge and a practical approach to each project.
FAQs About Concrete Waterproofing & Sealing in San Marcos, TX
What does Concrete Waterproofing & Sealing protect against?
Concrete waterproofing & sealing protects concrete against moisture, stains, cracks, and surface damage. We apply sealing solutions that help reduce water absorption and weather wear. The right protection depends on the concrete type and how the surface is used. Regular sealing can help support longer-lasting concrete.
Does San Marcos Custom Concrete provide Concrete Waterproofing & Sealing in San Marcos, TX?
San Marcos Custom Concrete provides concrete waterproofing & sealing services in San Marcos, TX for business and home properties. We help protect concrete surfaces with sealing, coating, and moisture protection options. Our process starts with a check of the surface condition. We then choose the right approach. We focus on practical solutions for local concrete needs.
When should concrete surfaces receive sealing?
Concrete surfaces should receive sealing when they show signs of moisture absorption, staining, or surface wear. We suggest that you check concrete often to see when protection is needed. Sealing at the right time can help prevent larger issues. Each surface may need a different schedule based on use and exposure.
Can Concrete Waterproofing & Sealing improve older concrete?
Concrete waterproofing & sealing can improve older concrete. It adds protection and helps refresh the surface. We prepare existing concrete before we apply sealing products for better results. Older concrete may gain from crack repairs and protective coatings. A surface review helps find the best service option.
What types of concrete areas can San Marcos Custom Concrete seal?
San Marcos Custom Concrete can seal concrete areas such as driveways, patios, walkways, slabs, and business surfaces. We provide concrete waterproofing & sealing options based on the condition and purpose of each area. Our services help protect indoor and outdoor concrete. We work with property owners who want stronger, better-kept concrete surfaces.
What Does My Concrete Project Cost?
Concrete is priced by the square foot of the pour itself — length × width of the slab, driveway, or deck. Here are the ranges we see on real jobs around San Marcos, and a calculator built on the same numbers.
Concrete Driveway
A standard two-car driveway is 20×20 ft — 400 sq ft — and at 4 inches with a plain broom finish it runs about $3,000–$4,600 around San Marcos. Six inches for RVs and work trucks, stamped or exposed finishes, and tearing out the old driveway each move the number up from there. Every price here includes the compacted base — Central Texas clay swells and shrinks with the weather, so the base has to be built right or the slab moves with it.
Concrete Patio
A 20×20 patio at 4 inches, broom finish, runs about $2,400–$4,400. Stamped and exposed-aggregate finishes are the popular upgrades here — they can add half again to the plain price. Six inches goes under hot tubs and outdoor kitchens.
Slabs & Foundations
A two-car garage slab, 24×24 ft at 4 inches, runs $3,744–$5,760. Foundation-grade work — 6 inches, thickened edge, rebar, vapor barrier — prices higher per foot and is the spec a house or addition actually needs.
Pool Decks
Pool decks price like patios with three additions: coping edges at the water, drains that move splash water away, and a slip-resistant finish. A 400 sq ft deck runs about $2,600–$4,600 in a broom finish; cool-deck coatings and stamped finishes sit above that.
Repair & Resurfacing
Small concrete work is priced by the visit more than the square foot. Replacing one cracked or heaved section runs $11–$19 per sq ft with the demo of that section included; resurfacing a sound slab runs $3.50–$6.50. If a section has sunk, heaved, or cracked clean through, resurfacing is paint on a problem — we'll say so at the look.
What Moves the Price
- Finish. Plain broom is the baseline. Stamped, exposed aggregate, and stained finishes add materials and skilled labor — stamped work can run close to double a plain pour.
- Thickness. Four inches is standard for cars and foot traffic. Six inches — for RVs, work trucks, hot tubs — uses half again as much concrete on every square foot.
- Tear-out. Breaking out and hauling off old concrete is its own line, priced per square foot on top of the new pour.
- Job size. Small pours carry a minimum charge and short-load fees from the concrete plant; on big pours the setup spreads over more feet.
- Ground. Central Texas clay swells when it is wet and shrinks hard in a drought, and that movement cracks slabs that were poured on a thin base. Base work is in every price here — it is not an extra.
Where these numbers come from. Published Central Texas cost guides — Angi's Austin slab and driveway guides, HomeBlue's San Marcos slab guide, BuildX Pro's Austin driveway data, and Austin contractor pricing guides — gathered November 2026, on top of the national guides (HomeGuide, Angi, Fixr) behind the fleet concrete card. The full research note is on file with the site records.
A note on materials. These ranges figure a standard 4-inch pour of 3,500-psi concrete on a compacted base, broom finish. Decorative finishes — stamped, exposed aggregate, stained — add materials and skilled labor, and 6-inch work uses half again as much concrete on every square foot. Tell us what the slab has to carry and we'll confirm the spec and the exact price at the in-person estimate, before any work starts.
Estimate Your Project
A standard 2-car driveway is 20×20 ft = 400 sq ft; 24×24 = 576.
Sections poured in one visit share a single minimum charge.
A 20×20 patio is 400 sq ft; 10×20 = 200.
Sections poured in one visit share a single minimum charge.
A 2-car garage is 24×24 ft = 576 sq ft; a house slab is often 1,200–2,000.
Foundation-grade includes a thickened perimeter edge, rebar, and a vapor barrier — that's the spec, not an upsell.
Measure the deck band around the pool — most home decks run 300–600 sq ft.
Sections poured in one visit share a single minimum charge.
Pool decks get a slip-resistant finish and slope away from the water — both are in these numbers.
For a section replacement, measure the section itself. For resurfacing, measure the whole surface.
Sections done in one visit share a single minimum charge.
Resurfacing only works on a slab that's still sound underneath. If a section has heaved, sunk, or cracked clean through, replacement is the honest fix — we'll tell you which one yours is at the in-person look.
Free — no obligation. Your calculator numbers ride along with the request.
Send Your Project to San Marcos Custom Concrete
Your estimate is attached automatically. Add your info and — if you can — a few photos of the project. Photos help us price the job before we ever set foot in the yard. Prefer to talk? Call (830) 582-9453.
Why Choose Our San Marcos Concrete Contractors?
Quality, Durability, and Craftsmanship
Every pour gets a quality mix, the right reinforcement, sealer where it belongs, and a full cure. None of that is an add-on. It is how we keep slabs from cracking, shifting, or wearing out early in Central Texas heat and clay.
Community Reputation and Customer Satisfaction
Our customers in San Marcos are our neighbors, and word travels fast in a town this size. We pour every job like we will drive past it for the next twenty years, because we will.
Request a FREE Quote.
Ask us for a free written estimate. You get clear numbers and no sales pressure.
Residential Concrete Waterproofing & Sealing Benefits for Homeowners in San Marcos, TX
Driveway Concrete Waterproofing Benefits for Homes
Driveway concrete waterproofing helps homes protect driveways from water intrusion, stains, and surface damage. We apply sealing solutions that help concrete handle rain, sun, and daily vehicle use.
A protected driveway can stay cleaner and keep its look longer. Homeowners can use this service to support the long-term condition of their concrete. Regular sealing also makes routine cleaning easier.
Patio and Walkway Concrete Sealing Benefits
Patio and walkway concrete sealing helps home outdoor spaces resist moisture and weather wear. We protect these surfaces so they can handle changing outdoor conditions in a better way.
Sealed concrete can help reduce staining and make outdoor areas easier to care for. Homeowners can improve the look and function of patios, walkways, and similar spaces. This service is a simple way to add protection to existing concrete.
Pool Deck Concrete Waterproofing Benefits
Pool deck concrete waterproofing helps homeowners protect concrete areas around pools from moisture exposure. We use sealing methods designed for outdoor concrete that faces frequent water contact.
A protected pool deck can be easier to maintain and keep looking fresh. This service supports safer upkeep. It helps limit surface wear. Homeowners can enjoy a stronger outdoor space with proper sealing.
Concrete Waterproofing & Sealing Repair and Maintenance for Property Owners in San Marcos, TX
Concrete Crack Repair Before Waterproof Sealing
Concrete crack repair before waterproof sealing helps prepare damaged surfaces for better protection. We address visible cracks so moisture has fewer ways to enter the concrete. Proper prep lets the sealing process work in a better way. Property owners can protect concrete areas when they handle cracks early. This service supports stronger results for waterproofing projects.
Concrete Surface Preparation for Sealing Projects
Concrete surface prep for sealing projects creates a clean base for protective products. We remove buildup and prepare the surface before we apply concrete sealing solutions. Good prep helps sealers bond the right way with the concrete. Property owners gain from a process that focuses on lasting protection. Careful prep is a key part of each sealing project.
Concrete Maintenance Plans for Long-Term Protection
Concrete upkeep plans for long-term protection help property owners keep sealed surfaces in better condition. We provide upkeep guidance based on the type and use of each concrete area. Regular attention can help prevent small issues from becoming larger repairs. Property owners can protect their concrete with steady care. Upkeep keeps waterproofing and sealing benefits working over time.
Concrete Waterproofing & Sealing Methods for Commercial and Residential Clients in San Marcos, TX
Penetrating Concrete Sealers for Added Protection
Penetrating concrete sealers provide added protection by soaking into the concrete surface. We use these sealers to help reduce moisture absorption and surface wear. This option works well for many outdoor concrete areas. Clients can gain from protection that does not change the concrete look in a big way. The right sealer depends on the surface condition and project goals.
Decorative Concrete Sealing for Appearance and Durability
Decorative concrete sealing improves the look and strength of finished concrete surfaces. We help protect decorative patios, walkways, and other designed concrete areas. Sealing can help preserve colors and reduce surface damage from weather. Clients can maintain attractive concrete spaces with regular protection. This method combines look upgrades with practical care.
Waterproof Concrete Coatings for Extra Surface Defense
Waterproof concrete coatings add a protective layer that helps defend concrete from moisture and wear. We apply coating solutions based on the needs of each project. These coatings can support concrete areas that need added resistance. Clients can use this option for surfaces that face regular exposure. Proper application helps create a stronger protective barrier.