Updated almost 13 years ago on . Most recent reply

Tiles debonding--replace all or just some?
On the shower wall there are about 15 or 20 4X4 tiles that have a hollow sound when you knock on them, so I know those need to be replaced (water seeped in from the window sill above the tiles).
Is there a way of telling how many other adjacent tiles need to be replaced? Or does the large size of the new hardiboard or backerboard dictate that all or most must be replaced? (If I replace the entire area it will be upwards of 160 tiles so that will be a lot more expensive.) Should I assume that the entire area has been damaged by water? Thanks.