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Trompe l'oeil is not the preserve of specialists. As proof, this achievement is a rather rudimentary technique. Following its principle, you can embark on other compositions, varying only the patterns.

Imitate the stone effect on the walls

Practical advice

Take your time to pull the joints, taking care not to dig too deep the fresh plaster: the edges of the grooves would form extra thicknesses.
● If you are mixing colors to tint the stone, make a note of the dosages in order to reproduce them.
● Always store wax in a cool, dry place with an airtight cap.

The walls and walls of this living room are lined with plasterboard. To decorate them, we chose to create a base in trompe l'oeil imitating an apparatus of cut stones. Waiting for a picture rail, the decor will be stopped at one meter from the ground.
● To begin, the walls must be free of impurities, so sanded. It is not a question of obtaining a perfectly smooth surface, since it must be coated, but of eliminating the extra thicknesses at the joints between plates, as well as the possible fatty traces. As a precaution, cover the ground.

A reversible decor

Obtain a cellulosic coating (sold ready for use) that has the advantage of being removed with a steam stripper, such as wallpaper. Apply directly to the trowel or metal spatula, without leaving any extra thickness. But do not try to smooth it. To evoke the texture of the stone, structure the still fresh product by dabbing it with a sponge.
● Without waiting, mark the joints slightly using the edge of a spirit level (not easy to draw beforehand). Space them as regularly as possible, but slight differences in the intervals are not annoying. Polish the joints by "digging" them a bit more with a flat-blade screwdriver. It is up to you to represent a regular and calibrated apparatus or to opt for a more random layout, which will accentuate the theatrical aspect. Each has its charm...

Finishing

As a base, apply an oily-toned acrylic stain, well diluted, in one or two coats with a brush. Vary the directions continually to create a relief. Use small keys instead of "pulling", loading more or less in some places to create nuances. Let dry well, then, with a white wax to wax, gently dab the "stones" to obtain a patina that will restore the appearance of the aged stone. You can work with a brush or, if it is pasty, with a lint-free cloth, clean and rolled into a ball. To finish, pass the joints with the wax with the help of a fine brush, type fine-arts.

Paste a masking tape

Paste a masking tape

Delineate the level of the future picture railing by sticking, before coating, a large masking tape. The coating once dry, you will remove easily.

coat

coat

On the dry substrate, apply a thin film of coating. Work with a flexible gesture so as not to leave traces. The surface must be regular, without being smoothed so far.

Mark the joints

Mark the joints

To the eye or from millimeter markings previously drawn on the frame, mark the horizontal joints slightly with the inclined spirit level. A little pressure is enough.

Draw vertical joints

Draw vertical joints

Use one of the edges of the smoother to draw square vertical joints. You can alternate them in a rather free way, this decoration supports a certain irregularity.

Dab the plaster

Dab the plaster

Using a natural, dry sponge, lightly dab the entire surface of the plaster. Look for the grain that will best reproduce the look of limestone.

Refine the joints

Refine the joints

Polish the joints with a long tip or the blade of a screwdriver. Work by a show of hands: a perfectly rectilinear design would look too artificial.

Apply the stain

Apply the stain

The color of this acrylic stain was obtained by mixing. Transparent enough, it is not diluted. Apply it on the dry plaster by dabbing the brush.

wax

wax

To age the stone after drying the stain, apply a white wax to wax, dabbing it thoroughly with a brush, with a sponge, with a rolled cloth...

Bring out the joints

Bring out the joints

Last step, to make the decor convincing, bring out the joints by passing the white wax. Use a fine brush, fine arts type or decorative finish.


Video Instruction: Plastering Machine Imitation of stone & brick wall Decoration