A Guide To The Various Types Of Render Coating Systems

On August 18, 2017 by Melissa Hamler

Rendering can give your home the finishing touch it needs to truly become a stunning property with great street appeal. Because of its visibility, choosing the right render coating system for your home is key. If you find the plethora of rendering systems on the market confusing, this guide will help you understand the types of rendering available and which is most suitable for you.

Rendering is one of the quickest, cheapest and easiest ways to breathe new life into your property without an expensive renovation. If you’re building a new property from the ground up instead, choosing the right render will help to extend its longevity and the value of your investment.

Factors to Consider:

Wall Coating
There are several factors that will affect your rendering options. Some of the most important ones include:

  • Existing Substrate: This is the material that the render will be applied over. Whatever render you choose will have to adhere to the substrate, so aim for the most compatible pairing you can find. If you are not sure of the best render for your home’s existing substrate, get assistance from a well-known rendering company.
  • Property Age: This will affect the ascetical setting, method of construction, preparation, repair and ongoing maintenance needed, so be sure to discuss this with your construction team
  • Aesthetics: Different rendering systems will produce different aesthetic effects, so make sure to choose one that fits your tastes and is not jarring compared to surrounding homes.

Types of Render Coating Systems:

Wall Coating
Rendering is ideal for providing an attractive, weatherproof finish to your home, while covering any damage. Renders are composed of a binding agent, structural filler, water, fibre and additives. Some traditional types of render finishes include:

  • Lime Render

    As the name suggests, this render is made with lime, being both breathable and flexible and therefore best suited to buildings that have to endure a lot of movement. Lime render is also great for absorbing moisture, thereby protecting your home. Lime render is often applied in a single coat over rough substrates. However, lime render can be expensive and requires skilled application.

  • Sand and Cement Renders

    These renders are harder than lime render and will typically be painted. However, cement renders are not appropriate for older buildings as these are more likely to move and cause cracks in the cement. This means that cement renders are best suited to new homes which are more stable. Cement renders will be finished off with a finishing coat to add further protection and visual appeal. Perhaps the biggest advantage of sand and cement renders is that they are cheap and easy to apply. However, they can also be high maintenance and inflexible.

Render Coating

  • Clay Render

    Clay has long been used to render homes, and is experiencing renewed popularity thanks to the fact that it can often be sourced locally and is easy to produce. Clay render can be reactivated by adding water, which means it can be reworked. This allows for easy repairs, but also makes it susceptible to erosion. This means that clay render is not suitable for areas that experience heavy rain.

  • Polymer Renders

    These renders are usually sold in premixed bags, either based on white cement or lime. They are particularly known for the fact that they are less prone to cracking, and come in a variety of colours, which eliminates the need for painting. Polymer render is also vapour permeable and has high impact strength, making it one of the toughest renders on the market.

  • Acrylic Renders

    These are finishing coat renders that provide an attractive finish, and can be applied to a substrate, base coat render or even the existing render. This is ideal if you would like to freshen up the colour of your property without too much hassle. Additionally, acrylic render is very unlikely to crack, making it a worthwhile investment for your home. Acrylic render also allows the substrate to breathe, keeping the interior of your home dry and comfortable.

This list, of course, is not exhaustive, but provides a general guide to some of the most popular render coating systems. To thoroughly discuss the appropriate render coating system for your needs, speak to a reputable rendering company that will be able to assist you throughout the process.

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