Coloured Rendering

Coloured Rendering

Coloured Rendering

We are often guilty of neglecting the outside of our homes. After all, we usually spend more time indoors, where we invest in the decoration to make it look just right. But this can be a mistake, as the elements take their toll, not only making the external walls appear dirty and drab but also causing damage to bricks, mortar and stone walls. This can allow water to penetrate the cracks, leading to damp and mould problems.


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What Is Rendering?

What Is Rendering?

This method of wall covering is nothing new and has been around for thousands of years. The Romans were experts at it, creating beautiful finishes in houses and temples alike.

Simply put, render is a type of plaster that is used as a decorative finish for walls (indoors and outdoors) that also provides protection from the weather. Renders were often made from lime, with traditional cement renders becoming popular in the late 1800s with the invention of Portland cement.

All of these types of render improved the ability of external walls to withstand the elements, to a certain degree. Lime renders were often whitewashed/limewashed or painted but needed frequent repainting to keep them fresh.

In recent years, house rendering has become a very popular choice of external decoration, used in new buildings and house renovation. This is partly due to the fact that the range of house renders has been expanded, and modern renders have been enhanced with the addition of different types of polymer, such as silicone and acrylic. One of the most attractive features of these new types of render is that there is a wide range of colours to choose from.

These additions make them far superior to traditional cement or lime renders (usually found on period houses), as they are more resistant to the weather, provide a water repellent surface that doesn't allow dirt to stick, and are flexible enough to stop the surface from cracking.

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What Is Coloured Render?

Modern renders benefit from new innovations that allow the pigment to be added during the manufacturing process, and are usually referred to as through-coloured renders. This allows for an extensive range of colours to be made available, as well as significantly increasing the protective qualities of the render.

The great thing about through-coloured renders is that they cut out the need for a top coat of paint after the render has been applied, and, as the colour goes right through the mix, any scrapes or scuffs on the surface will not be visible.

Traditional cement and lime renders will need repainting or patching up to repair damage and discolouration every three to five years.

What Is Coloured Render?
Does Coloured Render Fade?

Does Coloured Render Fade?

This is one of the main advantages of modern silicone or acrylic renders; those vibrant colours will stay fresh for many years. Reports suggest that they will last for anything from 15, to 25, and even up to 40 years! That means there will be no need for repainting, saving you huge amounts of money, as well as the hassle of maintenance.

Some of these products have a water-resistant finish that stops dirt from sticking. Although you might want to give the

What Types Of Coloured Render Are There?

At the moment, there are four main options available, each with its own special qualities that make them suitable for different properties or situations:

  • Monocouche renders this is a cement-based render that is ideal for blockwork or brick walls, with the pigment already mixed in. The name means 'one coat' in French and refers to the fact that is a single layer (although it sometimes requires a thin undercoat). It is applied by machine or by hand and is usually scraped back to provide a smooth, flat finish that looks superior to that of traditional renders. If desired, you can even opt for an ashlar stone or brick effect finish.
  • Mineral renders – an excellent choice for properties in colder or wetter environments, as it is a dry-mix render and is the quickest to dry out of them all. It is what's known as a 'thin coat' render that is easy to apply and has the benefit of being breathable, flexible, and crack-resistant. The different grain sizes available mean that you can choose from a variety of textures and decorative render finishes. Because this is breathable, it works well with a mineral wool external wall insulation system.
  • Acrylic renders – the addition of acrylic makes this render very strong but flexible, which greatly reduces the risk of cracking after application. It is easy to apply (usually in two coats) and can be sprayed on, rolled, or trowelled on. It is also quick-drying, usually taking around two or three days, compared with traditional renders that can take as much as twenty-eight days to cure fully. Another key advantage is that they can be applied to a range of substrate materials, including brick, concrete, timber, fibre cement, and even painted walls.
  • Silicone renders – probably the easiest to apply, this is another 'thin coat' render. It is hydrophobic, which means that it has high water repellency. Any dirt that ends up on the external wall surface will be washed away by rainfall. It also means that algae and mould can't grow on the surface, keeping the colours bright and fresh. Silicone renders are often considered to be the best quality, due to their durability and flexibility, as well as being breathable. They are probably the most resistant to cracking out of all of the available options, partly because they often use a fibreglass mesh layer over which the render is applied. Finally, they produce a beautifully smooth natural finish.

Looking at this, you can see why this type of render is proving so popular. The sheer range of finishes and variety of colours alone makes them an attractive option for anyone wishing to upgrade and improve the look of their property.

As well as achieving a modern, clean-looking finish, with coloured rendering, you can protect the building from the elements for as much as 25 years, and possibly more. In addition, you will add value to your home and save money on energy bills because of the external insulation properties, as well as making a saving on future maintenance costs.

For anyone considering a new build, home improvement, or renovation project, coloured render systems an obvious choice.

What Types Of Coloured Render Are There?

Frequently asked questions (FAQs)

How long will my rendering last?

If the wall was properly cleaned before the render was applied then it has the best chance of avoiding any cracking. The more common type of sand and cement render is more prone to shrinking and cracking but this still lasts many years (8-15).

Is rendering my house a valuable investment?

Yes having your house rendered will certainly increase your houses value but more importantly if you are thinking of selling it has a much better look and gives older shabby houses a complete new build look of a face lift.

Does rendering prevent damp?

Yes especially silicone rendering & wet dash rendering which have waterproof properties that stop water from penetrating the render and brickwork.

What is the difference between plastering and rendering?

The difference quite literally is only the fact that plastering is done on internal walls and rendering is done on external walls. There are some slight differences in the materials used and a broader range of rendering types but none the less it is the same skill set.

Will rendering make my walls stronger?

Indeed it does as it acts as a binder to the older more crumbly brickwork and mortar. It also increases the thermal efficiency of your home reducing energy bills.
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