Common Mistakes to Avoid When Rendering Walls

Rendering a wall is a great way to improve its aesthetic and increase the longevity of the structure. However, it is important to do the job properly in order to ensure that you get good results. In this article, we look at some common mistakes that people make when rendering walls and how to avoid them.


expert renderer explaining common mistakes when rendering walls

Not Preparing The Wall Properly

The first step in rendering a wall is preparing the surface for applying the render. If this isn’t done correctly, then no matter how carefully you apply the render it won’t adhere properly and could end up cracking or peeling off soon after application. It’s important to check for any loose bits of paint or wallpaper as well as ensuring that all surfaces are clean and dry before rendering.


Incorrectly Mixing The Render

One of the most important steps when rendering walls is getting the render mix right. Applying too much water can weaken the render and make it prone to cracking, while not enough water will make it difficult to apply evenly. It’s important to follow the instructions on the packet for mixing the render and to always check that you have mixed it correctly before applying onto the wall.


Not Allowing Enough Time For Drying

Render takes time to dry properly, so it’s important to allow enough time between coats for this to happen. If you don’t give enough drying time then you could end up with a poor finish as well as risking the render cracking or peeling off. As a general rule, it’s best to allow at least 24 hours between coats and 48 hours before applying any paint on top.


Applying Too Much Render

When rendering walls, it’s important not to apply too much render – this can lead to uneven surfaces, bulging and cracking. It is better to apply thin layers of render and build up gradually than attempting to cover the wall in one thick coat. Make sure that you are pressing the trowel firmly against the wall as you spread the render for an even finish.


Not Finishing The Edges Properly

It’s also important not forget about finishing off around edges when rendering walls. This part of the job is often overlooked, but it can make a big difference to the overall finish. Make sure that you use a brush or trowel to ensure that all edges are neat and even before allowing the render to dry.

By being aware of these common mistakes when rendering walls and taking steps to avoid them, you can get great results every time. With some preparation and attention to detail, your wall will look fantastic once finished!


Using The Wrong Render For The Job

When choosing render for your project it’s important to make sure you select one that is suitable for the job. Different types of render have different properties and are better suited for certain tasks – for example, some are designed to be applied onto existing surfaces, while others are specifically created for new builds.

Ensuring you select the right render is key to achieving a professional finish and making sure your wall is properly protected from the weather. If in doubt, it’s best to speak with a professional who can advise on the best type of render for your project.


Not Protecting Surroundings During Application

Finally, it’s important to remember that rendering is messy work and it’s easy for splatter or excess render to get on nearby furniture or floors. It’s essential that you cover up any items close by with plastic sheeting or old sheets before starting the job so they don’t get damaged during the application process.

By following these tips, you can avoid making common mistakes when rendering walls and achieve a professional finish every time! With some preparation and care, your wall will be transformed in no time at all.



Rendering walls is a great way to give any room a fresh look but it’s important to make sure that you do it properly. From not preparing the wall correctly to using the wrong type of render for the job, there are many potential mistakes that can be made. By following these tips and avoiding these common errors, you can ensure your project goes smoothly and have a stunning end result!