How to white set internal render

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How to white set internal render

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Project Overview

White setting a rendered wall gives it a smooth, glossy finish that’s ready for painting. We’ll show you how to prepare the whitest plaster, apply it to the wall, and get a smooth finish. 
Continue to step-by-step instructions

Step by Step Instructions

1 Mix up the white set
2 Wet down the wall
3 Apply the render
4 Smooth the wall
  • Step 1. Mix up the white set

    Pour the putty into the drum and add 1 1/2 bags of hard wall plaster. Use the drill with a mixer attachment to mix it together until its nice and creamy. Scrape off any excess on the side and mix it through.  
  • Step 2. Wet down the wall

    Use a sponge or hose to wet down the render wall before you apply the white set. Use the hawk and a clean trowel, working from left to right in an arched motion, pushing away and then coming back.  You can do one or two coats. If doing two the first should be just a fine scratch coat. The second coat is thicker and makes it purely white.
  • Step 3. Apply the render

    Apply the render using a flat trowel, then smooth it off on a slight angle.  Go over the wall with the trowel to make it nice and smooth. Be careful of the angle you hold the trowel. If you tilt the trowel too much you can take too much “fat” off the wall. 
  • Step 4. Smooth the wall

    Leave the wall to dry a little while you clean up your tools. Use a paint brush to flick water on the wall and go over it again with a trowel to smooth and polish the wall.  Leave it a few days to dry before you seal or paint over it.

Tools and Materials


  • Bucket of water
  • Drill
  • Hawk
  • Paintbrush
  • Safety gear
  • Scoop
  • Trowel
  • Tub


  • Hard wall plaster
  • Lime putty

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