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Discuss Found myself back at the tiling! in the Tiling Advice | Tile Forum area at TilersForums. USA and UK Tiling Forum

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Gavin Robinson

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Hi Gavin, it’s bad enough that the substrate is ply but to have it secured with screw nails instead of screws is a big risk also.
Locally we used / use the word "screwnails" for screws before there were such things as "threaded nails". The ply is attached with screws. Thinking that maybe this is a job - removing ply and or installing wedi board - that someone else can do.
 
OP
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Gavin Robinson

Gavin did you sbr the back and edges of the ply?
The ply was installed by the builders. I removed one sheet to reroute an electrical cable to reach a lighted mirror and yes both sides and edges are primed. The Bal tanking kit packaging is still in the bathroom.
 
OP
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Gavin Robinson

This is why I stick to tile and not orthopedic surgery.
I stick to things I feel competent at which usually but not always involves wood as the material.I am not a tiler but know how to tile competently in the normal tile range of sizes but the large format of the tiles in this job is the reason for seeking advice. I think you are suggesting I stick with joinery/ carpentery in this case.
 
OP
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Gavin Robinson

There are issues with the movement of wood no matter how well fixed - even 18mm plywood.
Then you've got a paint on tanking layer which is required to hold the weight of 1200x600x10mm tiles!
Ring BAL technical and see if they would guarantee this installation.

This is a Bal overview statement about one of their products -:

BAL Rapid-Flex Fibre Plus is a non-slip cementitious tile https://www.tilersforums.com/forums/tile-adhesive/ for walls and floors formulated with BAL Fibre Strand Technology (FST) for improved flexibility, strength and grab. Fast-setting in three hours, it provides extended open time of 30 minutes and pot life of 60 minutes, and is formulated for easier mixing and application. A high polymer content allows for tile direct onto plywood walls, while it is recommended for large format tiles, areas of total immersion, limited movement and heated screeds.

Their tech spec indicates
Use for

  •  Fixing ceramics, porcelain and vitrified tiles, mosaics, most natural stone, terrazzo, rigid foam insulating materials and brick slips in dry or wet interior and exterior environments.

  •  Recommended for large format wall tiles, areas of total immersion in water e.g. swimming pools and showers.

  •  Installations subject to limited movement and vibration.

  •  Heated screeds.

  •  Recommended for plywood walls.
 

Andy Allen

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Not even the most experienced tilers on here would use rapid set in a bathroom.
I certainly wouldn't, you would be throwing more away than you use, and gives you no time to make adjustments.
 
OP
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Perry

Yes as you dont sound competent. And you may find yourself in trouble later down the line. I do not wish that with any tradesman. Even a chippy. But if you go ahead listen to everyone who's trying to help.
 
OP
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Gavin Robinson

Yes as you dont sound competent. And you may find yourself in trouble later down the line. I do not wish that with any tradesman. Even a chippy. But if you go ahead listen to everyone who's trying to help.
Sounding not competent when considering a job beyond my normal range is,I would have thought,a sign of competence and hence why I seek advice from professional tilers such as your good self.Even a chippy is prepared to listen to everyone with more experience in these matters!
 

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