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Tamko Bathroom Remodeling: The Miami Owner’s Guide
A Tamko bathroom remodel in Miami typically runs $10,620 to $33,040 fully installed, depending on the size of the space and whether you’re replacing one surface or gutting it to the studs. We stock Tamko-compatible waterproofing, underlayment, and trim pieces on our trucks for most common Miami homes, so we can usually get started the same week you approve the written price. Most owners figure out something’s wrong when they notice a loose tile, a soft spot in the floor near the shower, or water staining on the drywall below a tub deck. Tamko’s waterproofing and backer systems do the invisible heavy lifting in a bathroom, and when that layer fails, the visible damage always trails behind it by months.
If you’ve got a Tamko-branded bathroom surface that’s delaminating, cracking, or letting moisture through, you’re in the right place. This page covers which Tamko products we work with, what fails first in Miami’s humidity, and what an honest replacement costs. Sawyer Remodel Miami is an independent remodeling contractor, not affiliated with Tamko, but we’ve installed and repaired their bathroom systems across Dade County for years.
Which Tamko Models This Applies To
Tamko makes a range of bathroom-relevant products, but the ones we see most in Miami homes are their waterproofing membranes, shower pan liners, and backer boards. The compatibility question almost always comes down to which product line was used in the original install, because Tamko changed formula specs on some of their membrane lines about ten years ago. If your bathroom was built before 2015, you may have the older PVC-based shower liner, which has a different bonding requirement than the newer composite sheets.
Here’s the gotcha most homeowners run into: you cannot reliably identify Tamko waterproofing by sight once tile is over it. We identify it two ways. First, we look for the manufacturer stamp on any exposed edges, usually inside the access panel behind the tub or under a threshold. Second, we match the failure pattern. Thicker reinforced sheet membranes fail at seams and corners. Thinner roll-on products fail in the field of the wall, often behind lower wall tiles. If neither check is conclusive, we take a small core sample during the estimate, which tells us exactly what’s behind your tile before any demolition starts.
On the OEM versus aftermarket question: for Tamko waterproofing and underlayment, we recommend staying with Tamko’s current spec or a structurally equivalent membrane from a manufacturer with documented Miami humidity testing. The aftermarket options that save you $300 to $500 often lack the vapor permeability rating that matters in Florida, and that’s not where you want to gamble. For trim pieces, transition strips, and bath accessories, quality aftermarket equivalents are fine and often ship faster.
Styles & brands we work with
Signs Your Tamko Bathroom Remodeling Is Failing
- Loose or hollow-sounding floor tiles near the shower or tub. This means the underlayment has absorbed enough moisture to swell or delaminate, and the tile has lost its mechanical bond. In Miami’s humidity, a bathroom floor that stays damp longer than thirty minutes after a shower is the earliest warning.
- Water staining on the ceiling of the room below. If your bathroom sits above a kitchen or living space in a Coral Gables two-story or a Brickell condo, brown rings on the ceiling below mean the pan liner or waterproofing under the floor has failed. By the time the stain shows, the subfloor has been wet for at least a few weeks.
- Grout that stays dark or smells musty no matter how much you clean it. Dark grout is a moisture wick. Water is getting behind the tile, and the grout is acting as the exit path. The smell is mold feeding inside the wall cavity.
- Caulk that peels, cracks, or separates from the tub edge within months. If the joint between the tub or shower base and the tile keeps failing, the substrate behind it is moving, and movement in a wet area means water is finding its way through.
- Efflorescence, which is the white chalky powder on tile surfaces. That powder is mineral salts getting pushed out of the cement or mortar as water passes through. It is not just cosmetic; it means water is actively migrating through your wall or floor assembly.
If you’re seeing one of these, it’s rarely a surface problem. It’s a system problem underneath. And the longer it runs, the bigger the demolition area gets.
Replacement Cost & What’s Included
In Miami, a Tamko bathroom remodel with us lands between $10,620 and $33,040. The spread comes down to three things: square footage, whether we’re replacing the waterproofing only or the full tile and fixtures, and what’s hiding behind the walls once we open them up. A compact Brickell condo bathroom with a fiberglass surround and a failed pan liner runs at the lower end. A larger master bath in Coral Gables with a full tile replacement, new bench, niche, and a bigger footprint runs at the higher end.
Every quote we write includes the part itself, the labor, the cement, membrane, sealant, and trim, plus disposal of the old materials. You get a written price before any work starts, and the number on that paper is the number you pay. The 365-Day Done Right Promise covers the workmanship for a full year after we close the project. If something isn’t done right, we make it right, in writing, on every job.
Here’s what drives the range:
- Small bathroom remodel: $5,900 – $14,160
- Tub-to-shower conversion with Tamko waterproofing: $4,130 – $11,800
- Walk-in shower installation: $5,310 – $14,160
We don’t quote a low number to get the job and then surprise you after demo. If we find rotted framing or a subfloor that has to go, we stop, show you photos, and hand you a revised written price before we spend one more dollar of your money.
See the difference
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AfterDIY or Call Us?
Here’s the honest split. You can safely check the outside: run your hand along tile seams for movement, watch how fast water beads and rolls off the surface after a shower, and check the caulk line around the tub or shower base. That’s inspection, and it costs you nothing.
Opening a wet wall is where DIY goes wrong fast. Tamko waterproofing is a full-system install, and a patch on a failed membrane almost never holds. What looks like a small tile pop is usually the visible edge of a much larger water migration problem. And working around wet electrical, plumbing, and rot is not where you want to learn on the job. If the failure is at the pan liner or the waterproofing layer, the tile has to come out, the substrate has to dry or be replaced, and the membrane has to be reinstalled to spec. That’s a trade job. Call us at (850) 801-8046 and we’ll tell you honestly whether you need a repair or a full swap, and what each one costs in writing.
FAQs
A properly installed Tamko waterproofing system lasts 15 to 20 years in Miami’s climate, but the weak points are always the seams and the pan corners, which can start failing in 8 to 12 years if the original install movement joints weren’t done to spec. Humidity accelerates any installation flaw, so a bathroom with poor ventilation can see failures inside a decade. Call (850) 801-8046 for an inspection if your bathroom is approaching that age and showing any of the warning signs above.
If the failure is caught early and confined to a single seam or corner, we can sometimes do a targeted repair, but if water has reached the subfloor or wall cavity, the affected area has to be opened, dried, and rebuilt. Most of the time, what homeowners think is a small repair turns out to be a section replacement once we open the wall. Call (850) 801-8046 and we’ll give you a straight answer after seeing the actual damage.
A typical Tamko bathroom remodel with us takes 2 to 4 weeks from demo to final coat, depending on the size of the space and whether we’re moving plumbing. Small walk-in shower replacements can finish in 7 to 10 working days. We’ll give you a written timeline along with your written price, so you know exactly what to expect.
We stock common Tamko waterproofing membranes, transition strips, and underlayment on our trucks, and we order anything less common through our Miami supplier network, which usually arrives within 3 to 5 business days. We also keep KraftMaid, Cambria, and Silestone product lines on hand for full bathroom remodels, so most of the material is ready before demo day. You never have to chase parts yourself; it’s part of the job.
Get Your Written Price Today
If you’ve got a Tamko bathroom surface failing and you want a price in writing before any work starts, call us at (850) 801-8046. Luca Romano or one of our lead installers will walk the space, take the moisture readings, and hand you a fixed price with the part, the labor, and the warranty all spelled out. Good work doesn’t need a sales pitch.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Miami at Sawyer Remodel Miami, serving Miami and nearby areas.
