POSSIBLE CAUSES
It is possible that the penetration of moisture and dirt due to the lack of waterproofing of the joints has led to their cracking and disintegration.
SOLUTION
We remove the old grout with the TILE GROUT.
We thoroughly clean the joint area. In the event that moisture has penetrated the substrates of the cladding, we leave a certain period of time (a few days) for it to expand into the atmosphere.
We re-grout the surface with:
DUROPOXY epoxy grout, DUROGROUT CEMENTITIOUS Fine-grained grout (1-10mm) or CEMENTITIOUS Super-fine grout (0-3mm). In the case of cementitious grouts, we waterproof the joints with D-16 HYDROSTOP.
