In our current project, the huge windows of the two-story living room have somewhat undersized casings.
So we enlarged them, with a faux travertine finish and some trompe l'oeil egg and dart mouldings.
<------ Samples of the faux finishes
The stone finish makes the casings feel more substantial, and the additional border helps balance the size of the large windows.
To create the travertine finish, a coat of glaze (raw umber + white) is painted over an off-white eggshell finish paint.
A piece of pleated tissue paper is laid on the wet glaze, then smoothed over with a tooth spalter, and quickly removed.
This is repeated with a lighter coloured glaze on top.
This technique gives a fairly convincing textured effect similar to a foro romano travertine limestone.
The egg-and-dart moulding is created using a stencil to block in the "shadow" areas. Additional details are painted in by hand. in this way we can make each one slightly different so they don't look too new or machine-made
Warm white highlights are added as well as some shadows on the wall around the new "casings."
Subtle trompe l'oeil "joints" in the casings help make them look more convincingly assembled from carved stone.
The finished windows have more support for their size
and lend some classic Italian atmosphere to the room.
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Lynne Rutter Murals & Decorative Painting