Also granite is immune from the damages of most common household acids.
Least porous granite.
Most granite is porous to a certain degree and thus susceptible to staining.
Much like granite marble is one of the most common countertop materials chosen by homeowners.
Strictly speaking some tests measure the accessible void the total amount of void space accessible from the surface cf.
By comparison a more stain prone granite like kashmir white has an absorption rate of 3 5 and would definitely need sealer.
How porous is granite compared to marble.
Porous materials have minute surface holes that liquids may penetrate leaving stains and eventually eroding or cracking the surface.
Porosity or void fraction is a measure of the void i e.
Porous materials such as granite marble and concrete need to be sealed regularly about every six months says courter.
Marble countertops are very porous and require re sealing once every few months.
Empty spaces in a material and is a fraction of the volume of voids over the total volume between 0 and 1 or as a percentage between 0 and 100.
Staining can be easily controlled by application of a sealer on these surfaces.
There are many ways to test porosity in a.
Even worse germs bacteria and mold can invade unsealed granite counter tops with stains running not far behind.
And really applying a sealer is no more difficult than painting a wall.
This is particularly true for lighter colored stones like santa cecilia granite and white granite.
Btw i looked up the absorption rate of my granite and it is 1 3.
Alas its porous surface is granite s kryptonite.