Plaster is a long-lasting, durable wall finish that has largely been replaced by drywall. Drywall is manufactured in 4-by-8-foot panels and can easily be cut and fastened to a wall with screws. However, plaster is spread onto a wall and the installer can manipulate the applicator to add a custom texture — something that takes extra steps with drywall. To plaster a wall, you first need to cover the wall, then apply the plaster.
6 Use a sponge to make the texture of your choice while the plaster is still wet against the wall, if desired.
Pour plaster into a plaster tray and slowly add water with a hose. Let the water soak into the plaster for a couple of minutes, then stir with a paint stirrer until a paste-like consistency forms.