Hello!
I've just put a shower in an original laundry and noticed these yellow/orange stains in the grout after only 2-3 uses.
The tiles were glued to a concrete rendered wall after waterproofing. The area is fairly cool as it is on the bottom level of a 3 story house.
Any ideas what it might be? Is it mould?
Thanks!
bigreader
Edwards Renovations Pty Ltd
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