Bleach Stains On Marble

A bleach stain on a black granite countertop is unsightly and has more than likely removed the top protective coating over the natural stone.

Bleach stains on marble.

For example coffee stains will show up on a marble kitchen countertop near the coffee marker. The reaction happens in seconds and corrodes or eats away the marble essentially destroying the polished layer on the surface. Bleaching stains removes most discoloration from unsealed marble. The bleach has etched the marble causing the dull light spots on your table top.

Because of its porous nature stains and dirt seep into the marble and are difficult to remove by traditional cleaning methods. Think about what objects are typically used near the area of the stain. There also are light grayish stains around the drains. Although the surface is disinfected and safe it may remain unsightly.

Mold can stain marble bathroom countertops floors etc. Marble is a durable stone under most circumstances but it does require some special care. Your tiles may end up etched pitted or discolored. Marble is a porous material just like any other stone.

Only use bleach on light colored marble and do not. Removing mold stains from marble. Other than the stains the cultured marble is in very good condition and the original gel coat still is relatively shiny. Marble tile is just as susceptible to staining as solid marble but you can use the same method.

Even once the mold spores are dead the black staining may remain. Because marble is porous you should clean spills immediately or you run the risk of the stone developing stains. Razor blade and paint striper. If the hydrogen peroxide was unable to remove the staining diluted bleach may be the only product able to do so.

See our article of etch removal. These stains can be the result of a water glass that was left on a marble countertop for too long or from hard water buildup around sinks and showers. Bleach can be used to clean granite but if the corrosive liquid is allowed to sit too long on the material it can eat through the protective layer of sealant. See mold stains section below.

Below are some more specifics on the method of removal for each stain. I have some light hard water and rust stains on my cultured marble one piece bathroom vanity tops with sinks. Mold stains can be difficult to remove. The above table details what you will need to remove each type of stain.

Water stains are yet another common stain that occurs on marble. Mold is a common problem in many bathroom settings. Marble is made of calcium carbonate which reacts with acidic and alkaline substances like bleach. See paint stain section below.

Calcium carbonate the primary compound in marble can be highly reactive to both acidic and alkaline cleaners.