Dark stone does get very hot so you need adequate movement joints throughout.
Why does granite oxidize in weather.
Answer granite is normally one of most durable natural stone and normally very resistant to climatic conditions.
Oxidation is shown on the edge of the surface.
If your granite slab is frequently gets in contact with pool of water on its surface then metal on granite slabs can easily leave green or brown colour stains due to the process of oxidation.
Wind water and ice denude the soil and earth s crust overlying the granite mass exposing it to the atmosphere.
Granite is a hard nonporous mineral similar to marble and depending on its source can be stained chipped or discolored.
It shatters on the surface and the fractures widen to form crevices.
The crystals in the granite are being decomposed by hy drolysis.
The rock expands and contracts in reaction to changes in temperature.
The proc ess is beginning to take place on the top surface of this granite headstone where a black weathering layer is de veloping.
Granite is softer than marble and consists mainly of quartz and.