How to render exterior walls – rendering tips for beginners

Roger revisits a topic that Skill Builder covered many years ago.

Skill Builder’s original how to render video has been one of the channel’s most popular videos but some professionals responded to say that they prefer alternative techniques.

Roger Bisby considers some of the points raised in response to the first video and shares some details about how to render that will help anyone taking on rendering for the first time with Roger’s apprentice Jago proving that rendering is a skill that can be picked up easily with the right advice.

Roger discusses that scracth coat, how to check whether the render is flat and the ingredients and ratio for the best rendering mix.



About Roger Bisby

Roger Bisby
Roger Bisby is an English television presenter and journalist, known for his expertise in the British building industry.


  1. Avatar

    you said you was a plumber in the previous rendering video, you got a good finish so dun’t get the knocking comments from the “pros”but if you want to take your rendering to the next stage and look a real pro take the render off the front of the hawk with the back of the trowel. Move the hawk up quickly and tilt back while running the back of the trowel over the render and picking up some of it from the front of the hawk. Regards

  2. Avatar
    Deiniol Skillicorn

    Hi Roger, I have seen several of your videos on plastering and rendering and you have inspired me to give it a go. I’ve just done my first rendering basecoat on one wall (6m x 2.5meters). I have a couple of questions and would appreciate your advice.

    1. I think the basecoat is too thin at about 5mm. I used 5.1.1. mix. Can I do another coat followed by the top coat?

    2. I am finding the render really hard to work and its taking me ages. Am I just weak?

    3. My scratching isn’t very deep on the basecoat in some places. Can paint sbr on before the next coat.

    Many thanks


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