Why Does Granite Need To Be Sealed

As mentioned earlier dark stone is often more dense and won t need sealing but lighter color granites are often more porous and will definitely need to be sealed.
Why does granite need to be sealed. You should seal granite when needed and not based on some arbitrary schedule. Most but not all granite countertops will need sealing upon installation and then resealed every 1 5 years depending on the color and porosity of the granite the quality of the sealer and proper sealant application. Granite is a porous material which means the material will absorb liquids on its surface to some degree. Because granite is a natural stone and is generally penetrable within its porous surface sealants are an easy and effective way to protect granite countertops.
Sealants block liquids from seeping into the granite. Granite is durable but stiff and brittle. Marble institute of america. Here s why sealing granite countertops can preserve the beauty of the material for many years to come.
Some people seal their granite countertops once every six months to a year though stone can never be oversealed. I didn t realize that certain granite needed to be sealed to prevent water damage as opposed to a quartz countertop. There are 2 ways to test a granite countertop or any stone countertop for absorbency and also determine if the stone is mixed with calcite or other minerals that are sensitive to acidic spills. The best way to tell when you need to seal your stone is to test it.
Well most granite kitchen countertops do need sealing to help prevent stains but sealing granite won t prevent cracks. However how often you need to seal it will vary. Left unsealed granite as a natural stone in nature easily absorbs moisture and liquid. This is why sealant is so important and manufacturers of granite surfaces take an extraordinary amount of care to make sure sealant is done to near perfection.
Although most granite countertops don t need to be sealed it does help the stone resist dirt and spills which can cause etching and staining source. Here s how to know for your granite. At least once every five years a sealant should be applied to prevent staining from oils water and other liquids. By its nature granite is moisture resistant however it s also porous.
It could be that hairline cracks occurred during installation or from standing on the granite or from some impact. Limestone and marble tables should also be sealed to provide some protection. Unfortuantely this tendency ultimately leads to the breakdown of the stone. I will have to make sure i get some that won t need extra sealing.
If you re going to place food or drinks on a granite table it s a good idea to seal it. Granite countertop cracks occur from trauma. Professionals agree that darker color granite will require less sealing than lighter slabs because dark granite is denser and less porous. Granite like many natural stones is porous.