Cotton plaster is not only popular because of its positive influence on the room climate, but is also relatively easy to work with. The textile fibers and the pulp glue they contain are soaked in water and, after swelling, applied with a trowel or spray gun. The most complex is the preparation of the subsurface.
Prepare the subsurface
Cotton plaster lies on the substrate like a swollen mass of fibers. The textile substance dries out and then forms an opaque and dense mass. Most of the problems with cotton plaster is its tendency to suck out foreign matter as it dries, which can lead to discoloration. Another aspect is the possibility that a very dark background shines through a lighter plaster color. The preparation of the subsurface includes:
- Also read - Paint cotton plaster
- Also read - How to clean a cotton plaster properly
- Also read - Apply cotton plaster with a spatula or spray
- Dry and dust free
- Remove paint, glue and wallpaper residues
- Prime depending on the absorbency
- Remove all dowels, nails and screws
- Dark color due to the "white" coloring primer
Apply and mix cotton plaster
The preparation, mixing and swelling of the cotton plaster is usually exactly described in the manufacturer's product description. The basic steps in making the plaster are:
1. Put cleaning powder in a clean bucket or bowl
2. Add the specified amount of water (tap water)
3. Knead and mix with your hands
4th. Cover or fill in a plastic door and leave to soak for at least twelve hours
5. Give again and clean container and knead again
Plaster the wall
Depending on the type of processing, the compound is picked up from the container with a trowel, spatula or spatula and, starting from the outside, is spread onto the substrate.
If the application is carried out with a spray gun, the plaster compound is poured into the funnel. For spraying work "overhead" on a ceiling, an angle piece must be available on the spray gun.
Cotton plaster that is too thick, incorrectly or unsatisfactorily applied can be removed by simply lifting it off when wet. Transitions, grooves, grooves and gutters can be corrected with moistened application tools.Tips & Tricks Do not mix cotton plaster with a mixer such as a mortar (€ 7.79 on Amazon *) stirrer on a drill (€ 48.00 on Amazon *) . The fine "whisking" destroys the fiber structure of the doughy mass. While watering, knead the plaster with your hands like a batter.