Window border with embrasure covered in stone
To make the architrave more authentic extend the arch by a couple of stones past the window panel.
Window and door embrasures can be covered with corner pieces in manufactured stone veneer in the model chosen, remembering that the irregularity of the surface will not permit door leafs to be fitted.
Monoblocks can be used for inserting leafs, where the closure is separate from the corner finish.
A. Insulation panel
B. Fireproof safety panel
C. Strip of seal
D. Polyurethane foam
E. Corner profile