How Durable Is Your Render System?

There are various factors to consider when it comes to a render system’s durability, such as the substrate and the wall’s condition prior to applying the render. But among all the other factors, the type of render plays a significant role in how long it lasts.

There are certain types of renders that contractors can apply to your home or business. Each type of render can cover your external wall, making it aesthetically pleasing and protecting it against the weather.


Sand and Cement Render

Also called traditional render, sand and cement are the early and cheapest version of rendering. They usually come in beige and grey colour. You have to decorate it to look pleasant, but it can be easily repaired when cracks appear.

Lime Render

Lime is also a traditional type of render, mostly applied to properties built before the ‘30s, which has lime mortar between the bricks.

Modern Render

Modern render systems are self-coloured and flexible. They also have the ability to repel water, algae, and other organisms that cause damage to the wall.

Considering certain factors such as the weather, the maintenance required, and the building’s movement, traditional types of render (sand and cement, lime) tend to worn out sooner than the modern types. The latter lasts the longest, around 5-10 years. It is because modern renders are more flexible, technologically-advanced, and requires a little maintenance.


A substrate is a solid substance installed on the wall to provide a secure bond between the wall and render. The most common types are blockwork, brickwork, and timber frame. The substrate can also be applied in an existing render.

Timber frames require a more flexible type of render because it has more movement than brickwork and blockwork. Applying sand and cement render on this type of substrate is discouraged as they can crack easily with slight movement.

Suppose you are going to apply rendering over an existing render. In that case, it is advisable to use a thin coat, modern render. Applying other types of render will not be durable as they are too heavy and would pull the render off the wall in months or years.


An overhang is an extension installed to prevent water from running down the render and getting through any gaps, thus helping it to last longer. The roof overhang is the most common type of overhang. It drives water away from the render, preventing damage caused by rain, and making it last longer.

Does your property require rendering? Feel free to contact SM Rendering Contractors Ltd for a guaranteed high-quality and efficient service.

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