Apply plaster and smooth at the right moment

Mixing and processing grated plaster or pane plaster is one of the simplest plastering work. A skilled and experienced layman can easily do the application and design himself. When the substrate has the required properties, the greatest challenge is finding the perfect time to smooth it.

Properties and time factor

The most important work step when applying plaster to the window pane, also known as rubbing plaster, is the design of the slightly tightened application. The structuring of fresh plaster is started when the fresh plaster is still malleable, but no longer sticks.

  • Also read - Texturing plastered windows by smoothing
  • Also read - When cleaning the windows, there is a drying time and a standing time
  • Also read - Applying and designing interior plaster

Mineral plaster is a little more complicated to work with than plaster based on synthetic resin. While this advantage can be used well when applying plaster to exterior walls, it should be weighed up when plastering inside. The more diffusing mineral plaster has a more beneficial influence on the room climate, including an antibacterial effect in the case of alkaline lime content.

A window plaster sinters, a scratch plaster does not

A rubbing or pane plaster often looks like a "prevented " scratch plaster. The irregular structure created by rubbing is formed from the grains of sand and their grain size. However, the surface remains physically smooth and allows the plaster to sinter.

During sintering, an unstable accumulation of water is concentrated on the plaster surface during the drying process. In the interior, mostly irrelevant, a scratch plaster instead of pane plaster can prevent this effect and ensure a more stable building skin.

How to apply plaster to the window

  • Synthetic resin or mineral plaster
  • water
  • If necessary, deep ground
  • If necessary, filler (€ 4.25 at Amazon *)
  • Brush or broom
  • Drill (€ 48.00 at Amazon *) with mixer attachment
  • Rubber tub or bucket
  • Trowel
  • Peel / float
  • Stainless steel straightener
  • Float / trowel
  • Masking material (tape and foil)
  • If necessary, a brush or tassel
  • If necessary, spatula
  • Scaffolding or ladder

1. Prepare the wall

Your surface must be level, smooth and clean. Brush or sweep the surface to be plastered thoroughly to remove sand and dust. Fill unevenness, holes and cracks with filler. Depending on the suction strength of the surface, apply a deep primer with a brush or a brush. Mask off the window frames and wall ends.

2. Mix the plaster

Rubbing or window plaster is offered as a powder mixture and mixed with water. In the manufacturer's instructions you will find the dosage and swelling time after mixing. Note the pot life during which the plaster can be used. As a guideline, you should mix the amount that can be applied in a quarter of an hour. Stir with the mixer on the drill until a homogeneous and creamy mixture is obtained.

3. Apply plaster

Pick up as much plaster with the trowel that about half the trowel surface is covered (amount of tennis balls). Spread the plaster onto the stainless steel straightener and pull it onto the wall, starting at the bottom.

4th. Structure

After the fresh plaster has been put on, after about ten to 15 minutes (standing time), structure the surface in horizontal, circular, vertical, diagonal or intersecting lines again from bottom to top, depending on the desired look.

Tips & Tricks It is essential that you adhere to the manufacturer's information on standing and drying times. Deviations can later lead to it falling off and tearing.