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Tamko Bathroom Remodeling: The Miami Owner’s Guide
Tamko bathroom remodeling in Miami typically runs $10,620 – $33,040 installed, depending on the scope of the failure and what has to come out before the new work goes in. If you’ve got cracked tile, a failed waterproofing layer, or a shower pan that’s been seeping into the subfloor, the first call you make should be to us at (850) 780-8123. Most owners discover the problem the hard way: a soft spot in the floor, water staining on the ceiling below, or grout that keeps crumbling no matter how many times it’s patched.
We’re an independent Miami contractor. We’re not affiliated with Tamko, but we work with their product lines regularly and know where they hold up in South Florida humidity and where they need reinforcement on the install side.
Key takeaways:
- Installed bathroom remodels in Miami run $10,620 – $33,040.
- The most common failure points in Miami are waterproofing seams and shower pan transitions, not the Tamko materials themselves.
- We stock common Tamko-compatible trim, sealant, and waterproofing components on our trucks.
- Written price before any work starts. Always.
Which Tamko Models This Applies To
Tamko’s bathroom product line splits into two general families: their waterproofing membranes and their tile backer systems. The membrane line includes sheet-applied products that go under tile in showers, tub surrounds, and wet-room floors. The backer systems include cement-based and foam-core boards that replace drywall or green board in wet areas. If you have the original packaging, look for a product code that starts with “TMK” followed by a series number. If you don’t have the box, the next best identifier is a small printed label on the back of a removed tile or on an exposed edge of the backer board.
The gotcha we see often in Miami: Tamko membranes are rated for specific thin-set mortars and specific sealant chemistries. Homeowners who patch a failed seam with whatever sealant is on the shelf at the hardware store usually end up with a second failure within six to twelve months because the chemistry doesn’t bond to the membrane surface. OEM repair kits are worth the extra money on this product line. Aftermarket equivalents exist, but the cost difference is small enough that we recommend staying with Tamko’s own seam tape and sealant for repairs for anything larger than a cosmetic crack.
Styles & brands we work with
Signs Your Tamko Bathroom Remodeling Is Failing
- Grout keeps cracking along the same line. This usually means the substrate behind the tile is flexing, which in a Miami home often traces back to humidity-driven expansion or a subfloor that was never properly prepared before the original install.
- You smell mildew even after a deep clean. Water is getting behind the surface and sitting in the wall cavity. That’s a waterproofing breach, not a cleaning problem.
- Tile near the shower floor feels loose or sounds hollow when tapped. The bond between tile and membrane has broken down, which means moisture has already reached the backer board or studs.
- The shower floor grout darkens and won’t dry out. This is a classic sign the shower pan slope is wrong or the drain flange seal has failed. Water is pooling underneath instead of draining.
- Paint or drywall below the bathroom is bubbling or staining. By the time this shows up, the leak has been active for a while. The repair scope climbs quickly once the subfloor is involved.
See the difference
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After
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AfterReplacement Cost & What’s Included
You’re not buying a Tamko part here. You’re paying for the tear-out, the materials, and the labor to put it back so it stays dry. In Miami, the full bathroom remodel range is $10,620 – $33,040. The spread comes from what’s hiding once we open the wall: if the studs are sound, you’re at the low end. If there’s rot, mold, or subfloor replacement, the number climbs toward the top.
For reference, a smaller bathroom remodel runs $5,900 – $14,160, while a walk-in shower installation alone is $5,310 – $14,160. A straight shower replacement is $3,540 – $10,030. The Tamko-specific portion of the job, meaning the waterproofing membrane and seam work, is typically a few hundred dollars in materials, but it’s the most consequential few hundred dollars in the whole project.
Every job gets a written price before we start. You’ll see parts, labor, and any subfloor or permit fees broken out as line items. No surprises, no verbal estimates that grow. The work is covered by our 365-Day Done Right Promise: if something isn’t right within a year of completion, we make it right at no cost to you.
DIY or Call Us?
The honest answer: cosmetic fixes are within reach for a careful homeowner, but waterproofing is not where you want to learn by trial and error. You can safely re-caulk a corner seam, tighten a loose escutcheon plate, or scrape and regrout a small section of wall tile. What you should not do is pull up shower floor tile thinking you’ll just patch a little membrane and reset it. The minute you disturb a waterproofing layer without knowing the sealant chemistry and the required coverage, you’ve turned a small repair into a full pan replacement.
Water is the one problem in a Miami bathroom that gets more expensive every day you wait. Call (850) 780-8123, tell us what you’re seeing, and we’ll give you a straight read on whether it’s a weekend project or a contractor’s job.
FAQs
A properly installed Tamko membrane should last 15 to 20 years in a Miami bathroom, but the real variable is the install quality at the seams and the shower pan transition. We regularly tear out “failed” systems in Coconut Grove and Coral Gables that didn’t fail because the product aged out – they failed because the original installer skimped on a seam at a corner or floor transition. Call (850) 780-8123 and we can tell you whether your failure is product age or install error by looking at where the water is actually getting through.
Yes, if the failure is isolated to a single seam or a small section of the membrane and the surrounding material is still bonded. Repairs of that scope can run a few hundred dollars in materials plus labor. The catch: most homeowners wait until the leak has spread, and by then the water has traveled behind the membrane and the repair becomes a replacement. If you’re seeing early signs, call us before the damage spreads.
A full tear-out and rebuild with proper waterproofing usually runs two to three weeks in Miami, depending on what we find in the subfloor and how much custom tile work is in the plan. A shower-only replacement can be done in five to seven days once materials are on site. We give you a schedule in writing before we start, and Isaac Pruett has been known to finish within the schedule he quoted more often than not.
We keep common Tamko-compatible membrane, seam tape, and sealant on our trucks, plus a range of trim and edge pieces for the typical Miami bathroom footprint. If your repair requires a specialty Tamko order, we can source it through our supply partners alongside the other professional-grade products we work with, including KraftMaid, Cambria, and Silestone.
Written by Isaac Pruett, Owner, Mason Remodeling Co Miami at Mason Remodeling Co Miami, serving Miami and nearby areas.
