Professional joint renewal to prevent mould
In order to renew joints properly, the infected sealant has to be removed completely and thoroughly.
It is also important to remove any remaining sealant from the back of the joints and the edges. The affected joint area must then be treated with an anti-mould product in order to kill still existing mould spores. Only then the joints can be resealed.
If these measures are not carried out carefully, mould may grow again quickly in spite of the fact that the sealant is equipped with a fungicide because of the mould spores still present in the joint underneath the new sealant.