The stone lining should be made from the bottom upwards
Ornamental Stone Finishing of Arches and Doorways: Design Ideas and peculiar features of Decorative Finishing. : The Stone Lining Should Be Made From The Bottom Upwards
Quote from Article entitled Ornamental Stone Finishing of Arches and Doorways: Design Ideas and peculiar features of Decorative Finishing.:
If you decided to finish the door jambs with ornamental stone, you need to choose an appropriate number of specific materials, for the reason that the glue must be selected depending on the density and weight of the product. Ornamental stone finishing of the front door can be done by using such mounting materials as:gypsum;clinker;sandstone;concrete;polymer blends.
The most lightweight material is a gypsum tile, but you should take into account that it is less robust and more susceptible to climate changes, particularly to humidity. It requires a surface treatment.
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