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Porcelain or ceramic for wetroom?
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[QUOTE="Tile Shop, post: 877595"] R-Ratings are complete arse and totally, without question, the most pointless test for slip resistance ever created and have no significance on real world situations! The Germans decided to perform a test (DIN 51130:2004) by tiling a ramp, covering it in motor oil, then gradually tilting the ramp until the poor bloke standing on it with his safety boots falls off. The higher the ramp goes without him dying, the higher the R number. Can anyone tell me what the relevance of that is when picking out a tile for a wet room? Perfectly ok if a punter is looking to tile a constantly moving ramp covered in oil, but irrelevant to any other application know to man. There is a second test they do, same ramp, same bloke (when he's out of hospital), but barefoot and slightly soapy water (DIN 51097:1992). The result gives you a category rating of A (dangerous) to C (safe). That's more like it, getting closer to real life. So for a wet room, you are looking for a CAT C tile. When looking through a list of CAT C tiles, you usually tend to find most have an R11+ rating, but not all. So if you want to use that as a rough comparison you can but its not set in stone, so that is not to say all R11's are suitable for wetrooms. Only way you'll know for sure if its ok, get a sample tile or two, take it home, wet it with soapy water, get your socks off and walk over it, dance on it, take a run and jump at it. If you live, its suitable :) We are going to start moving away from R and Cat ratings and every tile we currently stock or will be importing is going to be PTV tested (The UK HSE's recommended test method for commercial and public areas). A pendulum test that simulates footwear and barefoot slip resistance in both wet and dry conditions. Far more realistic and much easier to understand and no reason why, to be safe, this is advised for domestic areas. If it scores less than 36, not safe, if it scores 36+ safe. Simplez! So for example you could have a tile that scores 70 in the dry and 24 in the wet, so fine for predominantly dry conditions, useless for wet. Or 42 dry, 40 wet...... safe for both. [/QUOTE]
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Porcelain or ceramic for wetroom?
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