Shower problems must be the most common problem we come across at Tile Doctor where we often here of issues with discoloured shower tile and grout usually combined with a build up of mould. Discolouration problems tend to come from the dyes in bathroom products such as body washes and shampoo, where as mould is due to inadequate ventilation or extraction magnified by our cold damp climate as we keep the windows shut and increase insulation to reduce drafts and keep warm.
Removing Mould and Discolouration from Shower Grout
The photographs shown on this page come from a ceramic tiled shower cubicle in the Surrey town of Caterham which you may have heard of as it’s where they make the Caterham Sports Car. You should be able to see from the photographs areas of discoloration and mould on the grout and silicone sealant which unlike the glazed ceramic tiles are slightly porous and have allowed the dyes and mould to taken a hold.
To resolve the problems with the tile and grout a strong solution of Tile Doctor Pro-Clean was mixed in a spray bottle and then sprayed on; mixing the product with air allows it to stick better onto the vertical surface otherwise gravity causes it to run off. The Pro-Clean was allowed to dwell onto the surface for a few minutes before being worked in with a grout brush. The next step was to rinse the Pro-Clean down and then re-apply the process to areas which we had missed or needed further attention.
The tile was then left to dry before replacing the silicone sealant between the tile and shower tray; whilst Tile and Grout can normally be treated once mould gets a hold on the silicone the only thing you can do is to replace it. In some cases I’ve come across the grout becomes too stained to treat and in that case the only thing you can do is scrape the top layer of grout back using a screwdriver head sized to fit into the grout line.
Shower Grout Sealing
The last step was to seal the grout for which we used Tile Doctor Pro-Seal which is a penetrating sealer rather than one that sits in the surface. The sealer should prefect staining in future however given the location it will need to be re-applied more frequently than usual.