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Public Thread!: Poor tile Workmanship by DIY and Rogue Traders

This is a public thread. So please do NOT include personal information of who's done the job, where it's been done, etc. Only include information related to the workmanship. What's been done wrong, what should have been done, how the repair has gone on, etc.

Upload pictures of poor workmanship by DIYers and rogue "tradesmen" to this thread. We have another thread in the arms which we will move posts to here by request. If you have pictures uploaded to the thread in the arms and would like the pictures added to here, please let one of the staff know.
 
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D

Dumbo

Again, tiles must be faulty because they have cracked in 5 months of installation.

Few emails later getting the fitters method statement.

No, they have cracks because your "professional bathroom fitter" (turns out he's a general builder) has tiled a shower, without tanking, onto plywood!
View attachment 106794 View attachment 106795 View attachment 106796

Waiting for further images when the tiles are taken down.... or fall off!

EDIT: Exact reply from the builder:
"Your bathroom hasn’t been tanked, nor does it need to be, it’s not a wet room, we have used 18mm marine ply as a base, screwed in every 6 inches with 40mm wood screws, flexible https://www.tilersforums.com/forums/tile-adhesive/ (Mapai)

Flexible grout (mapai), corners and joints have been sealed with dowsil 791 flexible translucent silicone before application of https://www.tilersforums.com/forums/tile-adhesive/, we used a 6mm notched trowel."
What about the one at the bottom that doesn't want to be attached to wall anymore , is that faulty too because it hasn't stuck .
 
T

Tile Shop

What about the one at the bottom that doesn't want to be attached to wall anymore , is that faulty too because it hasn't stuck .
I guess it must be. Better get in touch with the factory and tell them to stop making tiles as an issue has been spotted by a builder. She has 5 more like that dotted around the base that she hasn't sent photos of. I've told her it should be condemned on safety grounds and there is no fix other than a full rebuild of the cubicle. Strangely enough, still not had any response from her or the builder yet.

As for marine ply or WPB, these days that don't mean shi....taki mushrooms. Wood + Water = Pop. Plain and simple. They haven't removed it from the standards for no reason.
 
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130
Morning all
remember what was said regarding tile on plywood.
One of my students was asking about why we use SBR & Acrylic primers instead of PVA so as i always confuse the the wording with SBR they googled it underneath the quote below these were a couple of the questions there.
SBR Bonding Agent. Construction Chemicals SBR is a white styrene butadiene co-polymer used to improve the properties of cement renders, screeds and mortars. Itis also used in conjunction with Construction Chemicals Tanking Slurry as a priming coat or tight render base coat.
Can you tile on plywood wall?
Can I Tile to Plywood on a Wall? While some types of plywood can be used in certain types of tile installations, use of the material has limitations. ... For wall installations, your real concerns are whether you want to use thin set directly on the wood and whether you are using an exterior or interior type of plywood.
Do I need to prime plywood before tile?
The plywood surface will then be the surface to be tiled. ... So your nice new clean ply floor isn't so clean anymore and if it's not prepared properly prior to tile, the https://www.tilersforums.com/forums/tile-adhesive/ will just go onto the dirt on the floor and might not stick! This is why it is better to prime it than not to
 
O

On one

An Oyster slate floor tile laid on a very weak sandy mortar on a very flimsy polythene (not your DPM type) on top of ....cork
I kid you not!

20190508_152559.jpg
 

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