Hot pots left for too long, on engineered benchtops such as Caesarstone, Essastone, Quantum Quartz and Silestone, can cause yellow to brown marks that can not be removed by cleaning. These can often be described as brown stains but are in fact burns.
When hot pots or saucepans are placed directly on the benchtop surface and left there for more than a few minutes, this can cause the resin in the engineered stone to burn and discolour. These burn marks can occur on all stone surfaces but will appear differently on each surface. On light coloured stones the burn will appear as a dark mark, and on dark coloured stone it will appear as a light coloured stain.
If left on long enough the stone benchtop can become so hot that thermal expansion can occur in the hot area, causing the stone to crack. This can even cause a very loud bang like a gun going off when it occurs.
Burn marks on marble benchtops can appear brown or white but mainly white. The white colour is caused by the natural mineral crystals under the surface, popping.
Burn marks on granite benchtops often appear lighter in colour as the crystals in the stone pop under the surface like marble.
To remove the burn marks, the surface of the stone must be ground to below the depth of the burn mark, which can often be quite deep. If not completed correctly this can sometimes leave a significant dip in the surface of the stone, which can change the reflection.
Engineered stones such as Caesarstone, Essastone, Quantum Quartz, HanStone and Silestone are made up of around 95% quartz crystals and 5% resin. This break up varies slightly depending on the brand of stone.
When the resin in the engineered stone comes into contact with caustic substances like oven cleaner, drain cleaner and very strong acids such as battery acid, the chemicals bleach the stone causing a light patch. If you look closely at the damage you can see that the bleach changes the colour of the resin only and the quartz granules remain the same colour as the original stone.
Caustic stains can only be removed by polishing. The Marble Man has developed a special process to do this on engineered stone benchtops called a Fusion Polish. There are some important considerations when having a bleach stain removed.
Etch marks mainly occur on marble benchtops, vanities and bartops. They are deep crevices in the stone, formed when acidic substances eat into the surface. Common liquids that etch marble and other soft stones such as limestone, onyx and travertine, are lemon and orange juice, wine, acidic foods and acidic cleaners.
When an etch mark first occurs it appears lighter in colour to the usual stone colour. The darker the stone the more obvious the etch mark. Etch marks on dark stone will look greyish in colour.
Over time, if left, etch marks will accumulate dirt and allow liquids to penetrate deeper into the stone’s surface, damaging and staining the stone. It is important to have etch marks polished or honed as soon as possible to avoid further damage.
The Marble Man specialises in removing etch marks from marble benchtops. During the polishing or honing process we grind the stone, using a range of diamond abrasives and polishing compounds, to reveal a fresh, smooth surface and a uniform finish.
After polishing or honing, the surface is cleaned and treated with an anti-bacterial formulation. After it is completely dry it is sealed with a penetrating sealer, to prevent staining. Note that a sealer will only help protect the stone from staining.
For total protection from etching, we recommend Tuffskin. This is a new form of sealing using a protective film. Tuffskin is mainly used on marble, travertine, limestone and onyx benchtops. It will not allow any substances to penetrate and is the only way to protect your stone from etching.
If you need further information on how The Marble Man can repair your etched benchtop, please send your details and upload your photos via our contact page, or call us today.
Cuts and scratches on natural marble and engineered stone benchtops, vanities and bartops can not only look unattractive, they can damage the stone. Left untreated these fine lines can attract dirt and moisture and stains can develop.
The only way to remove cuts and scratches is to repolish or hone the stone. The Marble Man is experienced at identifying the exact treatment needed for each type of stone and can successfully restore the stone surface.
Scratches on natural and engineered stone benchtops can develop for many reasons:
Natural marble requires a different polishing process to granite or engineered stone.
Polishing or honing will remove scratches on marble benchtops. This involves the use of diamond abrasives to wet polish the stone which reveals a fresh layer of stone. More information on marble polishing can be found in the polishing section.
Granite is a very hard stone and does not scratch as easily as marble, but it can still scratch. It has traditionally been difficult to polish, however The Marble Man has developed a special process called Fusion Plus Polish to remove scratches and dull patches. Whilst the process has some success results will depend on the extent of the damage.
Engineered stone made from quartz is also hard and not easily polished. The Marble Man has developed a similar process called Fusion Polish to successfully restore engineered stone surfaces.