Our front patio has tiles that some have cracked from the rest of the
by
Jaf13917317
platform. Underneath is some kind of sponge material that the tiles sit on. The same tiles edge our back patio and also our back entry door into the house. First I have to find the terra cotta looking tiles that are the same size as the front, back patio and the edge lined underneath the back door. Do I need special tools and what kind of material would glue the tiles if it rains, etc.
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It is likely that the tiles have cracked due to the ground underneath them not being levelled before the tiles were installed, or that the ground underneath has shifted over time. Therefore it must be re-levelled before tiles are replaced and reinstalled. From your description, it seems that the tiles been installed over a layer of underlay (?)
If you posted a picture, Hometalkers would be able to give you answers that are more specific to yur situation.