To remove soap scum and hard water deposits from a tile wall in a bathroom mix one part muriatic acid with five parts water.
Acid wash tile grout.
Fill a 3 gallon plastic bucket with 1 gallon of cold water.
Make sure you use gloves and eye protection as this is very dangerous.
Set the bucket of water on the floor outside the shower door.
Do not pour acid into the bucket and add.
Follow the warning and instructions on the bottle and be sure to wear rubber gloves and eye protection.
Since muriatic acid is a harsh chemical mix it outside.
The acid free formula is safe for ceramic marble and porcelain tiles.
This is the best dyi grout cleaning solution i found 10 parts water 1 part muratic acid.
Apply the acid solution to the grout with the paintbrush.
Place a drop cloth on the bathroom floor near the shower.
It attacks grease oil and soap deposits with a vengeance.
Fill a spray bottle with cold water.
After 24 48 hours and you are satisfied with the job the tile and grout should be sealed to restore strength and prevent stains.
Slowly add 1cup of muriatic acid into the water.
Allow the solution to sit for some time on.
Rust oleum miracle sealants phosphoric acid cleaner is a fast acting easy to use acid base cleaner for pre cast concrete concrete masonry grout tile and natural stone surfaces.
After diluting the cleaner as directed on the label allow the solution to dwell on the surface for 1 5 minutes while agitating with a brush.
Fill a bucket with 1 gallon of clean water.
Slowly pour 1 cup of phosphoric acid into the water.
Follow the acid clean with clean water.
Fill a 5 gallon bucket with water and place a sponge in the bucket.
Spray water liberally over the dried grout.
Turn on the bathroom exhaust fan or open the bathroom s window.
Saturate the tile with water.
It can also be used with a grout steam cleaner for extra cleaning power.
It is also important to wet the tile and grout before using to prevent the grout from absorbing the acid and destroying the grout.
You can get from any pool store.
How to acid wash a tile shower.
To use you spray it on wait for one to three minutes then use a brush to loosen and rinse it off.