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Quikrete Bathroom Remodeling: The San Antonio Owner’s Guide
We install Quikrete products in full bathroom remodels across San Antonio, with complete bathroom projects typically running $9,000 to $28,000 depending on size, layout changes, and the fixtures you choose. Most homeowners call us after a Quikrete shower pan or mortar bed has failed: cracked grout, a soft or mushy floor under the tile, or water staining on the ceiling below the bathroom. The good news is a failed mortar base rarely means gutting the whole room if it’s caught early.
Quikrete makes the structural products hidden behind your tile: mortar beds, self-leveling underlayment, concrete backer board, and shower pan mixes. When one of those fails, water gets where it should never be. In San Antonio, our clay-heavy soil shifts with every drought-and-deluge cycle, and homes on slab foundations transfer that movement into the bathroom floor. That’s why we see more failed mortar beds here than in areas with stable soil.
We’re an independent remodeling contractor in San Antonio, not affiliated with Quikrete. But we spec their products by name because the manufacturer’s data sheet is public, the mix ratios are consistent, and when something fails ten years later, we can diagnose exactly what happened.
Which Quikrete Models This Applies To
The Quikrete products we install in bathrooms fall into four categories, each with a specific job. If you’re holding a bag with a faded label or trying to match an old installation, here’s what matters:
- Floor Mud / Deck Mud (Quikrete Sand/Topping Mix): Used for sloped shower pans and mortar beds under tile. It’s a 3:1 sand-to-cement blend, which gives enough porosity for water to reach the drain weep holes. If someone used standard concrete mix for a shower pan, it’s too dense and traps water, which destroys the pan within years.
- Self-Leveling Underlayment (Quikrete Self-Leveling Floor Resurfacer): Poured over concrete slab before tile to create a flat surface. In San Antonio slab homes, this is the most common Quikrete product we see fail: it was poured too thin, over a slab that wasn’t primed, and it delaminates.
- Concrete Backer Board (Quikrete WonderBoard): The tile substrate for walls and floors. Matches standard 3′ × 5′ panel sizing. The compatibility gotcha is screw spacing: Quikrete requires fasteners every 6 inches on walls, and drywall screws are not acceptable. Galvanized or coated backer screws only.
- Shower Pan Liner Mortar (Quikrete Shower Floor Mud): A prepackaged 4:1 blend designed to be packed over a PVC liner. The most common installation mistake we correct in San Antonio bathrooms is troweled-on application instead of packed application, which leaves voids and soft spots.
For homeowners matching an existing product: the bag weight is the fastest identifier. Quikrete Sand/Topping Mix is sold in 60 lb bags, WonderBoard in 3′ × 5′ × 1/2″ sheets, and Self-Leveling Floor Resurfacer in 50 lb bags. If your existing material doesn’t match those specs, it may not have been a Quikrete product at all.
Styles & brands we work with
Signs Your Quikrete Bathroom Remodeling Is Failing
- Hollow-sounding tile when tapped. This means the mortar bed beneath has delaminated from the slab. The thinset held, but the float underneath didn’t. Walking on it compounds the damage and cracks tiles above.
- Damp, musty smell that never leaves. Water has worked through a compromised shower pan or cracked grout and is soaking into the mortar bed below. The bed acts like a sponge, and San Antonio’s humidity keeps it from ever drying out.
- Discolored or water-stained ceiling below the bathroom. This is the most serious sign. It means water has saturated the mortar bed, the waterproofing has failed, and it’s now traveling through the subfloor or slab. This needs professional assessment quickly.
- Cracked grout lines that reappear after repair. Repeated grout cracks are usually not a grout problem. They indicate the substrate underneath is flexing. That’s a failed or improperly mixed backer board or mortar bed, not a cosmetic issue.
- Shower floor that feels soft or spongy. A properly packed deck mud pan is rock-hard millions of pounds per square inch when cured. If it gives under your foot, the mortar was mixed wrong or installed too thin and is now crumbling.
Replacement Cost & What’s Included
A full bathroom remodel with Quikrete substrate work in San Antonio typically runs $9,000 to $28,000. The range is driven by bathroom size, whether you’re moving plumbing, and the tile and fixture selections you make. For shower-specific work: a walk-in shower installation runs $4,500 to $12,000, while a tub-to-shower conversion runs $3,500 to $10,000, and a shower replacement alone runs $3,000 to $8,500.
Every price we give is a written price before any work starts. That’s not a negotiating tactic or a range you’ll see change after demo day. Graham Stein writes the scope of work down, line by line, before the first tool leaves the truck. When you sign, that’s the number. Parts, labor, and the Quikrete materials are all included, and the work is backed by our 365-Day Done Right Promise: if it’s not done right after the job is complete, we make it right.
| Project Type | Installed Price Range |
|---|---|
| Full Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
See the difference
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After
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AfterDIY or Call Us?
What you can safely do yourself: inspect the grout, check for soft spots, look at the ceiling below for stains, and make note of where the shower floor meets the drain. Taking photos and measurements before you call helps us give you a faster pliminary read over the phone.
What we don’t recommend doing yourself: removing tile to inspect the mortar bed, attempting to patch a shower pan, or re-grouting over a failing substrate. Once tile comes up, you’ve broken the waterproofing layer and water has an open path. The Quikrete work underneath requires precise mixing ratios, correct moisture levels, and proper curing time in San Antonio’s heat. Done wrong, you’d have the same failure in half the time. Call (432) 233-0976 if you suspect a base failure. We’ll talk through what you’re seeing before anyone schedules a visit.
FAQs
A properly installed Quikrete deck mud bed or backer board installation lasts 20 to 30 years, and often outlasts the tile on top of it. The failure we see in San Antonio is not age, it’s improper installation or slab movement, and that typically surfaces within 3 to 7 years. Call (432) 233-0976 and we can help you figure out which situation you have.
Patch repairs on a compromised shower pan rarely hold because water has already traveled beyond the visible damage. In most cases, the right repair is removing the tile, repacking the mortar bed, and reinstalling waterproofing, which is a partial shower rebuild rather than a full bathroom remodel. The exact cost depends on what we find when we open it up.
A shower pan repack typically takes 3 to 5 working days: demo and prep on days one and two, the mortar pack and curing on day three, tile and grout on days four and five, with sealant application after cure. For a full bathroom remodel in San Antonio, expect 2 to 4 weeks depending on scope and fixture deliveries.
We source Quikrete products per job from local San Antonio suppliers, matched to the exact spec that’s needed. We don’t stock bags on a warehouse shelf, which means the product you get is fresh, within its shelf life, and the right mix for your particular installation. We also work with named-brand fixture and surface partners including KraftMaid, Cambria, and Silestone, so the finished room is built from materials you can research by name.
Written by Graham Stein, Owner, Elmstead Remodeling San Antonio at Elmstead Remodeling San Antonio, serving San Antonio and nearby areas.
Contact Us
If you have a failing Quikrete shower floor, mortar bed, or backer board in your San Antonio home, call (432) 233-0976 to schedule a free estimate. A live person answers, 24/7, every day. We’ll ask about what you’re seeing, answer what we can over the phone, and schedule a walkthrough if it makes sense. The price you get is the price you pay, in writing, before any work starts.
