A layer of protection called render is commonly applied to the exterior walls of buildings to enhance their resistance against natural elements. This protective layer shields the walls from corrosion, staining, and decay caused by external factors like rain, wind, and algae.
Apart from its weatherproofing properties, render is also utilised for its aesthetic appeal. By adding colour and patterns to the walls, rendered surfaces can give a property a unique and distinctive appearance, which can ultimately boost its value.
Render can be classified into two primary categories: traditional and modern render.
Traditional Renders
- Sand and Cement Render
- Lime Render
- Dry Dash Render
- Clay Render
There are several types of traditional renders that have been used for centuries to offer protection to buildings from weather-induced damage. One of the oldest render types is lime render, which is best suited for properties built before the 19th Century. Lime render is flexible and breathable, allowing for the necessary process of water absorption and evaporation in older structures.
It is important to use the right type of render for a building, as the wrong kind can cause damage and accelerate deterioration. If a render that does not allow for proper evaporation is applied, water can become trapped and lead to significant structural damage.
Modern Renders
- Acrylic Render
- Silicone Render
- Monocouche Render
- Polymers Render
For properties built after the 19th Century, modern renders are the primary choice. These renders contain additives such as silicone and polymers, which enhance their qualities. They make the render more breathable, water-resistant, and resistant to cracks. Modern renders are designed to work well with the construction methods used in modern buildings, allowing for natural movement.
One of the advantages of modern renders is that they can be through-coloured, eliminating the need for painting the surface. Monocouche render, in particular, is highly successful in achieving a desired color as the color is directly mixed into the render.
By understanding the different types of renders available, you can choose the most suitable one for your property based on its age and construction methods.
