Your Tile Qs Answered
All Your Tile Grout Questions Answered With Dr. Grout
From expert advice before you begin to installation tips and after-care, Dr. Grout and Beaumonts are here to help.
How Can I Prevent My Grout Going Dark Or Black?
When floors are washed with too much detergent and water, the dirt can collect in the grout lines. But there’s a better way to clean tiles.
If the lines between your tiles have gone dark or black, it is just dirty grout. This does not mean that you don't keep a clean home or floor, but simply that the way you have been cleaning is not best suited to tiles.
The most common cause of this is that people wash their floors using too much water and detergent. The dirt is washed off the tiles and collects in the grout joints. It settles in these mini gutters and dries out leaving a film of dirt and detergent. Each time the floor is washed, this film builds up and eventually causes the grout to appear black. In truth, the black is just the film of grime sitting on top of the grout. Learn more about what grout is.
In some areas where there is ongoing dampness, such as a bathroom, this film is an ideal breeding ground for mould.
Our Hot Tip: We’re always here to help book a free online or in-store expert consultation or contact our expert helpline on 1800 4 TILES between business hours.
Why Is My Grout Turning White?
Under certain circumstances, a white powder can form on grout. It could simply be soluble salts that are present in the cement-based products.
Under certain circumstances, a white powder can form on grout, especially on floor tiles. This is a natural phenomenon called efflorescence. It is due to soluble salts rising to the surface of a cement based product. When they dry out on the surface, the remaining salts appear white and powdery.
It is defined as the 'migration of soluble salts.'
This is not due to substandard tiles, adhesives, or grout; and generally, there is nothing to worry about.
What Can Cause The Problem?
As explained, is it simply soluble salts that are present in the cement-based product. This can be the concrete, mortar bed, tile adhesive, or grout.
These rise to the surface, and as it dries an annoying white powder remains on the surface.
So What Can I Do Now?
The only real solution is to brush the grout with a stiff-bristled brush and vacuum away. Repeat this from time to time, and eventually, it will generally reduce the severity or stop recurring. Do not continually wash the grout lines as that will dissolve the soluble salts only for them to reappear after the grout is dry.
You can reduce the amount of Efflorescence on your grout (or unglazed tiles) by using a product such as Eff-Plus. This product is specially designed to deal with efflorescence. Ask for it at your local Beaumont Tiles store.