Features of ashlars
The range of rock hardness is very broad, and the hardest rock is granite and generally the more hardness the rock has, its extraction and processing will require more time and cost.
The color of the rocks is wide-ranging, and some of the rocky minerals will change over time due to atmospheric conditions.
Rock tenacity is affected by atmospheric and chemical factors. Some of these weathering factors, such as freezing or UV-rays, physically affect the rock.
The division of rocks suitable for use in stone facade and ashlar
Conglomerate and Sandstone
Conglomerate rocks are in the form of thick layers on the cement and limestone bed, and the color of the parts and the background cement have good color differences. These types of conglomerate rocks are ideal. If it has a thick layer and has a good density, sandstone is used as an ashlar in the interior and exterior facade of the building.
Calcareous or dolomitic rocks
Calcareous or dolomitic rocks constitute the most part of decorative and façade rocks that their distinctive features and characteristics are their high hardness and tenancy, and good layout and their ability to be rubbed.
- Types of limestone or dolomite are: - Travertine - Marble
- Igneous rocks: - Granite - Rhyolite
- Metamorphic rocks: - Marble - Gneiss