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Discuss Are my expectations too high? in the Canada Tile Advice area at TilersForums.com.
Yes I understand that but when measuring lippage many people are referring to the tolerances below:
Variation across Joints:
±1mm for joints less than 6mm wide
±2mm for joint 6mm or more wide
Rather than:
Flatness and variation from plumb:
± 3mm under a 2m straightedge.
Diagram attached of my interpretation of the TTA tolerances........
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this is incorrect i think as this is BS 5385 7.1.9.2 Across joints
There should be no appreciable difference in level across joints
(commonly called “lipping”) and the maximum deviation between
tile surfaces either side of a joint, including movement joints, should
be as follows.
a) Joints less than 6 mm wide, 1 mm.
b) Joints 6 mm or more wide, 2 mm.
The above is correct across joints, this is where I got confused and please don't be offended by my understanding. What TTA are referring to here is tolerance allowed as you look down on the tile. Therefore if the joint is less than 6mm the maximum deviation in alignment as you look down on the tile is 1mm. Effectively if you had just laid the tile so it was still moveable, you could actually put your hand on it and twist it 1mm out of line and this would be within tolerance. This has nothing to do with the surface height of the tile against another tile. Believe me the amount of time I have spent on this is unbelieveable, even looking at regulations from the US and Australia for comparison.
The Australians have the best way of gauging lippage, they advise that by using a straight metal edge ruler from one tile to the next or protruding tile, if it allows a 2mmdrill bit to pass under it on the adjoining tile, this would constitute a rectifable defect. If the drill won’t pass under the ruler, the work is within tolerance.
No No No! you are completely wrong the British standard 5385 7.1.9.2 clearly refers to lipping, level across the joint and tile surfaces either side of a joint. Non of this has anything to do with joint alignment it is the British standard for lippage. I will not take offence at being told I am wrong when I actually am
Absolutely agree with you m8 2mm lip I would have been shot if I left that on a floor.I agree with Dean, but do think 2mm with a 6mm joint is to much, if the tiles are flat I would expect to get them lip free. That is why we are tilers imo.:lol:
thank godI would be most grateful if someone in the profession would confirm these tolerances with the tta because this is what was confirmed to me as being correct. May be I am wrong but if anyone is local to Leicester let me know, a quote for rectification would be appreciated. Unfortunately the Tiler that did the work has left the trade :-(
Absolutely agree with you m8 2mm lip I would have been shot if I left that on a floor.
IMHO 0.5 mm should be max and if you have that you should be ashamed of your self.
Where have all the men gone?
I would be most grateful if someone in the profession would confirm these tolerances with the tta because this is what was confirmed to me as being correct. May be I am wrong but if anyone is local to Leicester let me know, a quote for rectification would be appreciated. Unfortunately the Tiler that did the work has left the trade :-(
Reply to Are my expectations too high? in the Canada Tile Advice area at TilersForums.com