Pebble tile in shower needs to be re-done
michellemack
6 years ago
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6 years agojellytoast
6 years agoRelated Discussions
Pebble Tile in Shower keeps growing Mold
Comments (7)A couple of points to ponder...is this a localized area of increased humidity, or do you have whole-house elevated humidity? Has the relative humidity in your house ever been checked? A whole-house dehumidifier might help, they're fairly easy to install if you have whole-house air conditioning. If you already have one, it just might not be running as much now due to the AC not being used as much in the cooler winter months, so your winter interior levels might be increased. The bathroom fan you have can help evacuate localized moisture, but if the overall humidity in the house is high enough for mold/mildew to flourish elsewhere in the house then it might not be a fault with the pebble. The large amount of grout that comes along with most pebble installations can be an irritation for sure if you have mold/mildew. Do you have issues in other bathrooms or in other rooms in your house? If so, my first recommendation from this "whole house" side of the argument would be to look into the humidity levels in your house. By the way, installing a whole house dehumidifier would probably be less expensive than redoing your shower floor. Let's toss whole house aside and just consider the bathroom: When your shower floor was built, was the waterproof membrane put on top of a sloped surface, or was the waterproof membrane set on the flat subfloor and the sloped surface put on top of the flat membrane? Membranes put flat on the subfloor can hold water, exacerbating moisture problems on the shower floor. Especially a pebble floor. That excess moisture can then increase the localized humidity levels in the bathroom. Investigate the efficiency of your bathroom fan. How big the bath is versus the rated size of the fan. Run the fan. Is there any significant air movement? Will is suck and hold a piece of toilet paper to the face of the grill? Does the airflow grab the toilet paper and snap it onto the grill or does it barely hold on to it? Is it strong air movement? Weak? I'd take a look to where the bath fan outlet is outside your house. Are there any impediments to air flow? Bird nest, bee hive, etc. The duct work from the bathroom fan to the outlet hood...is the duct crushed anywhere? Pinched as it squeezes through a framing bay? Too long of a run? Too many turns? Grout sealers...some are film sealers, some penetrating. Film sealers are bad. They sound good, but in a bathroom it's like putting saran wrap over your tile. It's great...until moisture gets behind the wrap. Which it will. The better choice would be a penetrating sealer that is moisture vapor permeable. Those sealers will bead water droplets and will help the grout shed water. But if moisture gets under the grout (which it will) they allow the moisture vapor to permeate through, back out of the grout and back to free air within the room. Stepping back a bit to the pebble floor itself. Does it drain well or does water pool after you're done showering? Also, since pebbles can be a bit of work to grout, some people mix the grout too wet so it flows easier. That's bad. The water that isn't consumed during the hydration process will eventually evaporate away, and instead of having nice dense grout you have grout with micro-voids within the cementitious structure. It'll sort of act like a sponge, collecting and holding water. So...it could be myriad things. If this bathroom is the only moldy place in your house, start with the bathroom. The fan, is it moving air. The shower pan, is the membrane flat or sloped....See MoreWhat shower tile with this slate and pebble flooring?
Comments (22)Wow - I came home from work to find such wonderful ideas and photos! Thank you! MtnRdRedux - we already bought the RH medicine cabinet last year (this has been a very long DIY project) so I'm hoping we don't have the same problem you experienced. They are not inexpensive so that's disappointing to hear. I love the limestone and saw some today that could work. Also love slate for the walls and lukkiirish's photos but I'd like to stay lighter for this bathroom. The fireclay tiles are very interesting - I might need to look into those for a kitchen backsplash if not the bathroom. Not sure about metal panels, although that sounds very cool. The good news is I went to Arizona Tile today and might have found some tumbled marble 4x8 tiles that could work with my other selections. I need to pick up the slate and pebble order this week to be sure because I didn't take home the samples but I'm really liking this tumbled Carrera and Manhattan marble. The Manhattan has less pattern and some pieces are almost solid white while others seem a bit warmer with grayish blue or green undertones. There was also a larger 16x24 honed Soto marble piece that might work for the shower seat and curb/threshold. I also looked at the crema marfil, which seemed more ivory than pink - but the salesperson did say this stone could have pink undertones depending on what's in stock. (Thanks for the warning, cpartist!) Slate and Pebbles Carrera and Manhattan Tumbled Marble Soto Honed Marble Crema Marfil Tumbled...See MoreMaster Bath Shower Floor
Comments (20)Just to throw our $0.02 in the mix: We love our pebble/flat stone tiles, and when installed correctly (with the right products) you can have a very stylish and durable shower floor. Some things to keep in mind: These types of tiles are often irregular in shape and size, and have varying grout joint widths & depths; so Flexcolor CQ would not be the best choice. (Under limitations on the TDS we actually warn against using it in these scenarios) Rather, use Ultracolor Plus FA, as it can handle joints from 1/16” up to 3/4" wide/deep. Pebbles/stones are natural stone and will need to be sealed. (Sealing before grouting will make things easier on the installer) Sealing will become a maintenance duty (so get a quality sealer), once the stone begins to darken when wet, this usually means its time for another coat. Some more textured stones will not drain properly with a standard shower floor pitch, and the pitch will need to be increased to the drain. Plus you can always call our Technical Department at 1-800-992-6273 if you’re ever unsure....See MoreCracked grout on pebble tile shower floor
Comments (22)Really recommend you get an onsite inspection, analysis and discussion with a very qualified tile contractor (not the folks who performed the work). There are several approaches to this. None are effortless, but onsite is a must, and a pro is a must. You already know you have issues. No more advice from the internet will solve them. If you are near any of these certified contractors, that is one place to start. https://www.ceramictilefoundation.org/find-certified-tile-installers Or referrals from trusted sources locally. Where did you buy the tile? If it is a quality tile supplier, they may be able to provide you with the "A list". And yes, re-visit the "curbless" in your situation. At the very least, a small threshold, but this can be discussed along with the other issues with the Pro....See MoreUser
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