Deep Cleaning and Sealing Mouldy Shower Grout

Available in a variety of styles and designs Porcelain tiles are harder than normal Ceramic tiles and are known for their durability and water resistance, making them ideal for use in shower cubicles and bathrooms.

However, as I’m sure most people already know, shower tiles are not the easiest to keep clean and fresh. These tiles are exposed daily to a multitude of acidic soaps and shampoo dyes, and if proper precaution is not taken to rinse away the excess after using the shower, mould will grow very quickly on the grout.

This shower cubicle, constructed from Porcelain tiles, is a typical example of this. As you can see from the photo below, the mould problem was very apparent. I was asked by the property owner, who lives in Didcot, a railway town in South Oxfordshire, to refresh it after what must have been years of neglect. Here’s how I did it.

Porcelain Shower Before Renovation in Didcot

Cleaning a Porcelain Tiled Shower Cubicle

The first process in restoring this shower cubicle was to spray the walls with Tile Doctor Duo Clean, which is both a grout cleaner and a mould remover. I left it to dwell for 45 minutes, before proceeding to scrubbing into the grout with a stiff brush. I worked in sections, spraying more Duo Clean onto the tiles as I moved along the length of the walls.

Following this, I rinsed the entire cubicle with fresh water to remove any traces of chemicals and used my wet-vac machine to dry it quickly. The next process was to remove the old, mouldy silicone and replace it with fresh silicone.

Sealing a Porcelain Tiled Shower Cubicle

With the shower cubicle now fresh and clean, it was now time for me to seal the grout and tiles.

I did this using Tile Doctor Wall Grout Sealer Spray, which is a water-based grout sealer that prevents oil, water and acid-based contaminants – including soaps and shampoos – from spoiling the appearance and colour of grout. It does this while allowing for moisture vapour transmission.

Check out the photo below – you can see that after a short day’s work, the appearance of the cubicle has been completely transformed. The customer was very pleased with the result and the addition of the sealer will ensure it stays this way for some time to come.

Porcelain Shower After Renovation in Didcot

 
 
Source: Shower Tile Renovation Service in Oxfordshire

Restoring the Appearance of a Mouldy Shower Room in Cumbria

One of the first issues people have with shower rooms is the Silicone needs to be replaced, even a good quality Silicone like Mapei Ultra-seal which is fully waterproof and stain and mould resistant can still succumb to persistent damp issues. In fact it can get so humid in these areas the warm atmosphere is akin to a tropical rain forest.

To avoid the build-up of mould I recommend you rinse the wall tile and silicone down with plain water from the shower head after every shower and then leave the tiles to dry. Open the window and door to let out the warm condensation and after 5 to 10 minutes partly close the window (to the security setting) and then partly close the door, this then normalizes the room temperature thus inhibiting mould spores from blooming, as mould wont start to Spore on a cold room.

Shower Room Before Restoration Kendal

The pictures were taken from a shower room at a house a few miles up the road in Kendal where mould had caused a lot of staining to the silicone sealant and to the tile and grout both inside the shower cubicle and in the bathroom itself. There were also a couple of loose tiles around the base of the shower cubicle which needed to be re-fixed.

Shower Cubicle Before Restoration Kendal

Cleaning Ceramic Tile and Grout

We started by spraying the tile and grout down with Tile Doctor Pro-Clean which is a strong alkaline cleaner, spraying it on mixes it air which helps it to stick to Vertical surfaces allowing it to get to work on the dirt. We left it to dwell for ten minutes before scrubbing it in by hand using a stiff grout brush; this process certainly improved the grout but unfortunately it had become too badly stained to be satisfactory so we decided to recolour the grout using a white grout colourant.

Once the shower tile was dry the loose tiles were removed and the damp plaster board behind chopped out and replaced. The tiles were then cleaned up, fixed back into position, then grouted and the silicone sealant around the base of the shower cubicle was stripped out and replaced with new.

Shower Cubicle During Restoration Kendal Shower Cubicle During Restoration Kendal

Colouring Grout

One to two coats of white colourant were applied to the grout throughout the shower cubicle and shower room in order to get a uniform appearance and this final touch completed the transformation.

Shower Cubicle After Restoration Kendal

The other advantage of these particular colourant products is that they are epoxy based and form a barrier of the grout preventing future staining and making it very easy to clean going forward.

Shower Cubicle After Restoration Kendal

I think you will agree bathroom now looks like it was recently installed.
 
 
Source: Tile and Grout Cleaning and Restoration in Cumbria