Mastering Coloured Render: Types, Finishes, and Trends

Coloured render provides an attractive external finish without relying on conventional masonry paint to create the original colour. Modern systems are available in a wide range of colours, textures and material types, making it possible to achieve anything from a traditional scraped appearance to a fine contemporary finish.

However, “coloured render” does not describe one single product. Monocouche, silicone, acrylic and mineral renders have different characteristics and application requirements, and the appropriate choice depends on the property, substrate and required finish.

In this guide, we explain the main types of coloured render, their colours and finishes, and some of the factors to consider when choosing an external rendering system.

What Is Coloured Render?

Coloured render is an external render where the decorative colour forms part of the finished render or coating rather than being created solely by applying masonry paint afterwards.

Different coloured render systems achieve this in different ways. Monocouche is a through-coloured cement-based render, for example, while silicone and acrylic products are thin-coat coloured finishes used as part of compatible render systems.

The result is an external wall finish that provides both decoration and weather protection when the complete system is correctly specified and installed.

You can see an overview of the systems P3 offers on our coloured render page.

Benefits of Coloured Render

One of the main attractions of coloured render is that the decorative finish is incorporated into the render system rather than depending on an initial coat of masonry paint.

Modern coloured render systems also offer a wide choice of colours and textures. Depending on the system selected, the finished appearance can range from the scraped texture associated with monocouche to finer thin-coat finishes.

Different systems also have different performance characteristics. Silicone render, for example, is particularly known for its water-repellent characteristics while remaining vapour permeable. These characteristics should be considered in relation to the complete render system rather than assuming that every coloured render behaves in the same way.

Because many coloured systems are supplied with their intended decorative colour, they do not normally need to be painted simply to create their original appearance. They should nevertheless be considered low maintenance rather than maintenance-free.

Monocouche Coloured Render

Monocouche render is a through-coloured, cement-based external render. The name comes from the French for “one coat”, although the preparation and complete system required still depend on the substrate and manufacturer’s specification.

It can be applied by hand or suitable machine application and is commonly scraped at the appropriate stage as it sets. This produces the characteristic uniform, pitted texture associated with monocouche.

Because the colour runs through the render rather than being provided solely by a separate coat of paint, it does not normally require painting to create its intended colour.

Monocouche is available in numerous colours and can also form part of specialist decorative work. The appropriate preparation and system build-up depend on the background onto which it is being applied.

Monocouche Render Colours

Monocouche manufacturers offer a range of colours, allowing the finished render to complement different styles of property, roof coverings, windows and surrounding materials.

Colour samples should be treated as a guide because lighting, surrounding colours, texture and the way a sample is displayed can affect its appearance.

Silicone-Based Coloured Render

Silicone render is a modern thin-coat coloured finish containing silicone-based technology. It is normally used as part of a compatible rendering system rather than being treated as a standalone coating that can simply be applied to any wall.

Silicone systems are particularly known for good water-repellent characteristics while remaining vapour permeable. They are available in a wide choice of colours and can produce a fine textured modern appearance.

The exact system build-up depends on the substrate and manufacturer’s specification and can include preparation, compatible base coats, reinforcement and primer before the final finish is applied.

Scraped Silicone Texture

Some proprietary silicone-based systems are available with a more pronounced scraped texture. Product ranges and application requirements vary between manufacturers, so the complete specification needs to be considered rather than assuming all silicone renders produce the same finish.

Silicone Scraped Render Colours

Thin Coat Silicone Render

Thin-coat silicone render produces a different appearance from a traditional scraped monocouche finish. It is applied as the finishing component of a compatible system and generally produces a finer textured surface.

P3 primarily uses Johnstone’s Stormshield Thin Coat Silicone Render for suitable silicone rendering projects. Other manufacturer systems are also available, and the specification should always suit the particular background and project.

For a more detailed comparison, see our guide to monocouche render vs silicone render.

Thin Coat Silicone Render Colours

Acrylic or Resin-Based Coloured Render

Acrylic render is another type of thin-coat decorative render. Acrylic resin forms part of the formulation, helping to create a durable external finish when used as part of a compatible system.

Acrylic render is available in a range of colours and textures and is normally applied over an appropriately prepared base rather than directly over an unsuitable or unstable background.

The precise characteristics, preparation and suitability depend on the particular proprietary system. The render should therefore be specified for the building rather than assuming that the presence of acrylic alone makes it suitable for every property or prevents cracking.

Mineral-Based Renders

Mineral render is a mineral-based thin-coat render used as part of compatible external rendering systems.

Mineral renders are known particularly for their vapour permeability and can have different application and drying characteristics from silicone or acrylic finishes. This can make particular mineral systems useful under certain project or weather conditions, subject to the manufacturer’s application requirements.

Some mineral systems are intended to receive a compatible decorative coating after application, so they should not all be treated in exactly the same way as pre-coloured silicone or acrylic finishes.

Coloured Render Options and Finishes

The type of render chosen is only one part of the finished appearance. Different systems and specialist application techniques can create noticeably different textures and decorative effects.

Scraped finishes

Scraped finishes are strongly associated with monocouche render. The surface is scraped at the appropriate stage of curing to create a consistent textured appearance.

Thin-coat textured finishes

Silicone and acrylic systems can provide finer textured finishes, with the precise appearance depending on the product and grain size selected.

Brick Effect Render

Brick effect render uses specialist products and application techniques to reproduce the appearance of brickwork. The pattern, colour and detailing are created within the decorative finish.

Stone Effect Render

Stone effect render uses specialist application and finishing techniques to recreate the appearance of natural stonework.

With specialist finishes such as these, workmanship plays a particularly important role in creating convincing pattern, texture and detailing.

Popular Colours and Trends

Colour choice varies considerably according to the style and use of the building. Whites, creams, greys and other neutral shades remain popular on residential properties because they work with a wide range of roof, window and architectural styles.

Stronger colours can be used to create contrast or emphasise individual architectural elements, while specialist brick and stone effects can introduce a more traditional masonry appearance.

When choosing a colour, consider the roof, windows, doors, existing brick or stonework and neighbouring buildings. A small colour sample can also appear different once applied across a large elevation and viewed in natural light.

Considerations and Downsides

Coloured render offers considerable choice, but there are practical considerations as well as aesthetic ones.

The property and substrate must be suitable

The existing wall construction and condition should help determine which render systems are appropriate. A product should not be selected purely because its colour or texture is preferred.

No render is immune from cracking

Cracking can be influenced by movement, the substrate, preparation, detailing and installation. A new render system should not be expected to conceal significant unresolved movement in the wall underneath.

If existing render is already deteriorating, see our guide to common external rendering problems.

Repairs may remain visible

Matching an existing weathered coloured render can be difficult. Even when compatible material is used, differences in age, colour and texture can make a local repair noticeable in certain light.

Where appearance is particularly important, repairing or renewing a complete section or elevation may sometimes produce a more consistent result than a small isolated patch.

Low maintenance does not mean no maintenance

Rendered walls should still be checked periodically, gutters and downpipes kept in good condition and sources of persistent water dealt with promptly. Cleaning methods should also be suitable for the particular render system.

How Much Does Coloured Render Cost?

There is no meaningful universal cost per square metre that applies to every coloured rendering project.

The quotation can be affected by the size and shape of the property, condition of the existing walls, removal of failed render, preparation, the render system selected, specialist finishes, access, scaffolding and detailing around windows, doors and other features.

Colour and product choice can also affect material requirements, particularly where non-standard products or specialist finishes are involved.

For this reason, P3 prices coloured rendering according to the requirements of the individual project rather than using the old generic square-metre figures previously published in this guide.

Quality Render Systems and Materials

P3 works with established render systems and products from manufacturers including Weber, Parex, Johnstone’s and K Rend, selecting products according to the particular project and required finish.

The important consideration is not simply the manufacturer name but using compatible products and following the appropriate specification for the substrate and chosen render system.

Coloured Render FAQs

What is coloured render?

Coloured render is an external render where the intended decorative colour is provided by the render or finishing product rather than relying solely on masonry paint applied afterwards.

Is monocouche the same as coloured render?

Monocouche is one type of coloured render. Other options include silicone, acrylic and mineral render systems.

Does coloured render need painting?

Many coloured systems do not need painting to provide their original colour. Monocouche is through-coloured, while silicone and acrylic finishes are supplied in colour. Some mineral systems may require a compatible decorative coating as part of their specification.

Does coloured render fade?

All external finishes are exposed to weather and environmental conditions, so their appearance can change over time. The extent depends on the particular product, colour, exposure and maintenance.

Is coloured render waterproof?

It is better to consider the characteristics of the particular system than describe every coloured render as waterproof. Silicone systems, for example, are known for water-repellent characteristics while remaining vapour permeable.

Can coloured render crack?

Yes. Any external render can develop cracks under certain circumstances. Correct specification, preparation and application are important, but render should not be expected to conceal significant unresolved building movement.

Can coloured render be applied over existing render?

Potentially, where the existing background is sound, stable and suitable for the specified system. Loose, hollow or badly deteriorated render should not simply be hidden beneath a new finish.

Can damaged coloured render be repaired?

Local repairs may be possible depending on the system and extent of the damage. Matching existing weathered colour and texture can be difficult, so a repair may remain visible.

Which coloured render is best?

There is no single system that is best for every property. The building, substrate, preparation requirements, exposure and desired finish should all be considered when choosing the appropriate render system.

Coloured Rendering in Sheffield

P3 Plastering provides coloured rendering across Sheffield and the surrounding area, including traditional and modern external finishes.

Our wider rendering services include monocouche, silicone and other render systems together with specialist decorative finishes where appropriate.

If you’re considering coloured render for your property, contact P3 Plastering to discuss the project and arrange a quotation.

Final Thoughts

Coloured render offers considerably more choice than a single type of material or finish. Monocouche, silicone, acrylic and mineral render systems each have different characteristics, while specialist techniques can create finishes resembling brick or stone.

The right choice starts with the building rather than the colour chart. Once the condition and construction of the wall and an appropriate render system have been considered, the colour and texture can be selected to create the desired finished appearance.