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Tamko Bathroom Remodeling: The Woodland Hills Owner’s Guide
Tamko bathroom remodeling in Woodland Hills typically runs $9,000 to $28,000 installed, depending on scope, materials, and whether you’re doing a full gut or a smaller refresh. We stock Tamko waterproofing membranes, sealants, and backer board systems on the truck for most common bathroom jobs, so we can usually start as soon as the estimate is approved. Most Woodland Hills homeowners discover they need this work when grout starts cracking along the shower floor, a musty smell won’t leave the bathroom, or water stains appear on the ceiling below.
Here’s the thing about Tamko products in Southern California: they’re built to handle serious moisture, but our dry-season-to-rain-season swings and hard water put stresses on bathroom waterproofing that you don’t see in other markets. Failures tend to show up where the shower pan meets the wall, or where water sits against a curb that wasn’t sloped right. We see it regularly in Woodland Hills bathrooms that were built 15 to 20 years ago with older Tamko systems.
Which Tamko Models This Applies To
Tamko makes a few different product lines that end up in bathrooms, and the compatibility details matter. Their waterproofing membranes come in sheet and liquid-applied versions, each with specific application thicknesses (the liquid membrane needs to go on at 20 to 25 mils wet, and if someone rolled it thinner than that, it fails early). Their backer boards are the other common bathroom product, and those come in half-inch and quarter-inch sheets with different screw patterns.
The quick way to identify what you have: look for the Tamko stamp on the membrane edge or board face. Older installations used the red-label sheet membrane; newer ones often use the liquid-applied gray coating. If you can’t see a label, measure the board thickness or check whether the waterproofing peels at a corner (liquid membrane will flex, sheet membrane stays more rigid). For Tamko specifically, OEM parts and materials are generally worth it for the waterproofing layer itself because that’s the system Tamko engineers as a unit. For trim pieces, edge details, and sealants, quality aftermarket equivalents from brands like Schluter or Laticrete often install just as cleanly and sometimes cost less. The compatibility gotcha in Woodland Hills is hard water: mineral buildup eats sealants faster here than in softer-water areas, so the sealant choice matters more than the membrane brand.
Styles & brands we work with
Signs Your Tamko Bathroom Remodeling Is Failing
- Dark grout lines that won’t clean up. This usually means water is wicking behind the tile and mold is feeding on the adhesive underneath. Cleaning the surface grout doesn’t fix it because the moisture source is behind the wall.
- A musty smell that comes back within a day of cleaning. Water is trapped somewhere it shouldn’t be, almost always between the tile layer and the waterproofing. In Woodland Hills, this gets worse after rain because ambient humidity climbs.
- Cracked tiles near the shower floor or curb. Movement in the substrate is the typical cause, often from a curb that flexes every time someone steps over it. Once tiles crack, water has a direct path into the structure.
- Water stains on the ceiling below the bathroom. This is the late-stage warning, and by the time you see it, the leak has been active for months. The waterproofing layer has fully failed at one or more points.
- Hollow-sounding tiles when tapped. The tile has debonded from the substrate, which means water and movement have broken the adhesive bond. This is a structural concern, not a cosmetic one.
See the difference
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After
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AfterReplacement Cost & What’s Included
Full Tamko bathroom remodels in Woodland Hills run $9,000 to $28,000. A smaller bathroom or a walk-in shower replacement with Tamko waterproofing underneath lands in the $4,500 to $12,000 range. Here’s what drives the spread:
- Scope: A shower-only waterproofing repair costs far less than a full gut with new tile, vanity, and fixtures.
- Access: Hillside homes above Topanga Canyon Boulevard sometimes require longer material runs and tighter workspace, which adds labor hours.
- Substrate condition: If the framing underneath has water damage, that repair happens before any new Tamko membrane goes down, and it adds real cost.
- Material grade: Tamko membrane plus basic subway tile is one price point. Tamko membrane plus large-format porcelain and a Schluter edge system is another.
Every estimate from Sawyer Remodel Woodland Hills includes a written line-item price before work starts. That number is the number you approve, and it’s the number on the invoice. No change orders unless you change the scope. The 365-Day Done Right Promise applies to the whole job: if something’s not right within a year, we come back and fix it.
DIY or Call Us?
Some things you can check safely: look for cracked grout, test tiles for hollowness, and check the ceiling below for stains. What you should not attempt is peeling back waterproofing or removing tiles to “see what’s underneath.” Bathroom demo around waterproofing means sharp tile edges, possible mold exposure, and the very real chance of cutting into a membrane that was still doing its job. One wrong pull and a $1,500 repair becomes a $12,000 rebuild.
If the signs above match what you’re seeing, call (341) 217-2776. We’ll send someone who knows Tamko systems specifically, not someone who’ll learn on your bathroom. The free estimate takes about an hour, and you’ll have a written price in hand before we leave.
FAQs
With proper installation, Tamko waterproofing systems typically last 15 to 25 years in Southern California’s climate, though hard water and substrate movement can shorten that. If your bathroom is 15-plus years old and showing cracking or odor, the waterproofing layer may be near the end of its service life. Call (341) 217-2776 and we’ll assess what you’re working with.
Sometimes yes, if the failure is caught early and confined to one area like a curb corner or a single cracked tile. If water has been migrating for months, the damage behind the tile usually requires removing that section and rebuilding it properly. The only way to know is to look, and that’s what our free estimate is for.
A shower-only replacement with Tamko waterproofing typically takes 5 to 8 working days from demo to final grout. A full bathroom remodel runs 2 to 4 weeks depending on tile size, fixture lead times, and any framing repairs discovered along the way.
We keep Tamko membranes, backer boards, and compatible sealants on the truck for common bathroom jobs, so we’re not waiting on supply orders for most standard work. For specific Tamko product lines that are less common, we source directly through our supplier network with typical turnaround of a few days.
Written by Luca Romano, Owner, Sawyer Remodel Woodland Hills at Sawyer Remodel Woodland Hills, serving Woodland Hills and nearby areas.
