The cement plaster grind, level and smooth


Professionally applied and set cement plaster can be straightened and leveled by grinding. The work is not technically more demanding than any other grinding and polishing work. However, grinding is one of the most strenuous, noisy and dustiest jobs that arise around the construction.

Two handles on grinding machines

If a new paint is planned or interior plasters are to be provided with wallpaper, removal of cement plaster is usually not necessary. With a grinder, "healthy" cement plaster can be smoothed. An important criterion is the fineness of the plaster and the appropriately selected abrasive.

The physical strength required during grinding must not be underestimated even with a machine. The grinder should have two holding options, which are mounted at an angle of ninety degrees to each other. A suction hood prevents the uncontrolled "throwing away" of the pieces of plaster. Both components can be retrofitted with conventional angle grinders.

How to sand off cement plaster

  • abrasive
  • water
  • Grinder or concrete grinder
  • Grinding pan support
  • Suction or brush device
  • Eye, respiratory and face protection
  • Stable work gloves
  • construction tape
  • spray bottle

1. Secure the construction site

When sanding cement plaster, you can not prevent the uncontrolled jumping off of chunks of plaster despite the cup wheel attachment and the protective brush ring. Provide protection around your workstation and lock off about three meters in each direction with a construction site tape. Warn children and passersby.

2. Self-protection

Sand only with fully protective equipment. Wear your skin-covering clothes and sturdy shoes. You can reduce the formation of dust by applying water with a spray bottle to the area to be sanded.

3. grinding direction

Put in the middle of the wall to be sanded and work your way out in a circular motion. It is important to apply pressure evenly and to apply the grinding machine straight away.

4. Abrasive Grain

If structural cracks and holes form in the cement render during grinding, the grain size of the abrasive is too coarse. As a rule of thumb, 250- to 400-grit grains are a good start-up grit for indoor plasters.

Tips & Tricks

For coarser exterior plasters and larger areas, borrowing or purchasing special millers may be worthwhile. Calculate as working time about half an hour for a square meter.


Video Board: How To Render and Smooth the Surface of Concrete Wall