What Causes Blue Green Stain On Granite

Metal stains will appear if you have left out metal containers on your granite countertop and rusting occurs.

What causes blue green stain on granite.

Known as green bloom or blue blossom or california blossom these stains are. Food and beverage spills especially that of greasy foods and cooking oils can stain a granite surface over time. When water seeps into your granite countertop it leaves a dark spot that evaporates in a few minutes and returns to normal. But substances like cooking oils that don t evaporate can cause permanent stains if they re allowed to soak into the stone.

It is common that these green discolorations appear on the stone within a few weeks after the installation. The porous granite soaks colors and dyes often resulting in stains after lots of use or exposure to some fluids or objects such as oil based cosmetics food colored drinks and metal objects. The accelerator of this chemical reacts with the stone causing the area to turn green. If you re not certain what caused the stain consider its size shape and location to give you clues.

It is common that these green discolorations appear on the stone within a few weeks after the installation. Here are the steps. Blue or green staining occurs exclusively with copper pipe and fittings including brass which is copper plus. Blooming is common in light color granites.

All granite species are porous and their porosity varies from granite species to species. The exact cause is not identified and occurrence is unpredictable however it is thought to result from a chemical reaction involving certain elements within the stone and activators or accelerants used along with the adhesive for gluing the slab to cabinets or used within seams. Start by determining the source of the stain. Zinc and is caused by the corrosion and dissolution of the metal itself.

The accelerator of this chemical reacts with the stone causing the area to turn green. Metal stains will require the same poultice method that we used in the removal of organic stains. These stains appear reddish brown in color sometimes they might be green as well. What causes blooming is the chemical ch glue chip repair kit that is used to repair natural stone.

In rare cases stains can arise on the surface of newly installed granite marble countertops. Well certainly other things could cause a stain however this type of green stain in marble or granite countertops specifically occurs at the time of install and does result from use of certain types of glues and curing accelerators. Water quality and even improper electrical grounding hasten corrosion adding excessive amounts of dissolved copper to the water coming out of fixtures. Hair dyes colored toiletries paint and stain pigments the colorants contained in chemicals when spilled on granite will seep into the granite s pores and discolor the surface.