how smooth should a wall substrate be?

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serendipityfox
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how smooth should a wall substrate be?

Post by serendipityfox »

How smooth should a wall substrate be prior to tiling- there are some small voids, cracks and remnants of the previous tile adhesive on the walls. What is the the tolerance for smoothness +/-1mm?
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toolbox
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Re: how smooth should a wall substrate be?

Post by toolbox »

Cracks voids (unless they are an inch or more across!) are not a problem but "nibs" and blobs of old tile adhesive should be removed they will cause problems when you are trying to get a level tile finish
serendipityfox
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Re: how smooth should a wall substrate be?

Post by serendipityfox »

thankyou
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