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External Wall Render Types

 External Wall Render Types

There are a variety of different options for rendering and finishing your home’s exterior. We think it’s important that you understand the available options, so we’ll cover some of the most common paint finishes and external wall render types here.

When it comes to your home’s exterior, choosing the right finish depends on a variety of different factors. Being aware of these enables you to make the best choice possible, based on your needs and personal tastes.

The Three Main Factors

The Age of Your Property

This affects the substrate used, the construction method, and the aesthetics of the building. It will also impact how much preparation and repair is required as well as the level of maintenance you will need to carry out on an ongoing basis.

The Existing Substrate

This is the material used to insulate your home, applied under the finish. If you are using a render, then this is especially important to ensure that the render adheres to the substrate.

The Desired Finish and Colour

Unless you live in a listed property, in which case your options will be limited, this is the main factor that most people will want to consider. You want to ensure that your property is finished in a manner which is not only pleasing to the eye, but which also matches the surrounding environment.

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Cavity Wall Insulation Pros and Cons

The Different External Wall Render Types

There are several different external wall render types. Here are the most commonly used ones in construction:


Polymer usually comes pre-mixed and is based on either lime or white cement. This type of render has added materials that makes it less prone to cracking than traditional cement render. Available in a variety of colours, you’ll also find transparent varieties, so there’s no need to paint.


Cement is the traditional render used for exterior walls. Generally mixed on site, two-to-three coats are applied on top of a base coat, which is scored to provide a base for the next layer. The shiny top coat is then applied, ready to paint. Although cement render appeals because it is cheap, labour can be expensive and if the underlying building moves then it can crack. You’re also likely to spend more on maintenance as it will need frequent repainting to maintain its appearance.


Acrylic renders are applied in a thin coat to seal the underlying coat, enhancing its appearance. Often, silicone is added, which extends the life of the render, and adds self-cleaning qualities. Fibres can also be added to prevent cracks.


‘Monocouche’ is a new type of render which means ‘single layer’ in French. Popular in Europe with many big names in Germany, like Weber and Sto, it comes in a bag, and is ready to mix with water. It can be sprayed on, or applied with a trowel.

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More Detailed External Wall Render Types

Here are some examples of the most popular external wall render types, plus the advantages and disadvantages of each:

Lime Render

If your building is older, or timber framed, lime render is a practical choice! Its breathable and flexible qualities ensure it is ideal for older buildings, which can often experience more movement than newer structures.

Lime render sucks up water, acting as a sort of sponge, rather than creating a moisture barrier. When the weather changes, this moisture then evaporates into the outside air.


  • Low maintenance
  • Breathable and flexible
  • Provides an attractive, traditional look
  • Ideal for use on older properties


  • Can be expensive
  • Skilled application is required
  • Requires well graded wash aggregates
  • Soft material

Sand and Cement Render

These types of renders are much tougher than lime render. Cement render is usually painted to provide an attractive finish for your property. However, if you have an older building (which will experience more movement as a result), this type of render is not recommended, as cracking can occur.

Whilst you can add substances to the render to improve its flexibility, cement render will always be prone to cracking. A finishing coat is usually applied, as cement render isn’t waterproof.


  • Cheap
  • Hard, durable finish
  • Fairly quick to cure
  • Easy to handle, and can be mixed off-site


  • High maintenance
  • Inflexible and prone to cracking
  • Wall must be permanently dry
  • Can’t be used below the damp course

Clay Render

The resurgence in popularity of clay render, one of the first materials to be used in renders, could have something to do with its eco-friendly credentials.

Clay render is easy to produce, and can often be sourced locally. The minimal processing required to create clay render reduces its impact on the environment. It is recommended to find a commercial clay render, to ensure consistent quality.


  • Cost effective
  • Easy to repair and rework
  • Kinder to the environment


  • Poor erosion resistance
  • Performance can vary
  • Requires protection from heavy rain
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External Wall Insulation Installers External Wall Render Types

External Wall Insulation is Necessary!

External wall insulation (EWI) has become a hot topic of late, with the recent focus on energy saving measures. By adding external wall insulation to your property, you can reduce heat loss from your building in the Winter months, and increase gain during the Summer.

Because this type of insulation is external, it doesn’t take up interior space, and so is increasingly becoming a more popular choice than internal wall insulation, which can reduce your available interior space.

We all want to reduce our carbon footprint, save money on our energy bills, and do our bit for the environment, which is why it is well worth considering installing external wall insulation for your property.

Insulation for All External Wall Render Types!

Home Logic Wall Insulation is designed to repel water, keeping masonry delightfully dry. It’s a protective finish which repels dust and debris, and comes in a wide range of colours and textures, to perfectly complement your property’s exterior.

This mould-resistant masonry cream also helps to reduce microbial growth. Suitable for use on both traditional and modern properties, our product could help you to save hundreds of pounds a year on your energy bills!

Rendering is Part of the Home Logic Process

Our experts here at Home Logic employ a comprehensive 10-step process when carrying out any external insulation job. Our all-inclusive service commences with a full inspection and site survey, carried out at a time to suit you.

Then we thoroughly pressure wash your home’s walls, to remove debris and dust. The next step is to apply algae treatment to prevent the growth of algae and to prepare the walls by filling any cracks.

This is followed by rendering, ensuring that any damaged areas match the existing surface. Bagging is carried out, to create unique adhesive qualities, and we use masking tape and cloths to protect any areas of your home not to be covered in wall insulation material.

Then a coat of primer is applied, followed by the application of the Home Logic Wall Insulation.

We are professionals, which means we always finish by cleaning up any mess we have created, removing any protective equipment and masking tape and ensuring that any disruption to your life is minimised.

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Benefits of Home Logic Wall Insulation

There are many benefits to our revolutionary product – here are some of the main ones:

  • Performs for the life of the building
  • Breathable and flexible
  • Reduces heat loss
  • Self-cleaning
  • Maintains your home’s original, exterior finish
  • Improves your building’s thermal efficiency
  • Eligible for 5% VAT

If you need any more information on the benefits that Home Logic Wall Insulation offers your home, you can get in touch with our expert advisors to discuss your needs in more detail.

Want More Information on External Wall Render Types?

Our trusted team of specialists have years of industry experience, and we’ll install your insulation with minimum of disruption to your daily life. If you’d like more information about external wall insulation, or external wall render types, you can contact us at any time.

Our expert advisors are on hand during normal working hours, and we offer free, no-obligation advice. Just call us on 0800 1700 636. If you’d prefer to email us, you can do so at survey@homelogic.co.uk for answers to all your questions.

We offer a free site survey, so you can find out whether external wall insulation is right for your home. This can be arranged at a mutually convenient time, so that you can be present throughout.

There is absolutely no obligation to proceed after the survey, although we hope you will jump at the opportunity to improve your home’s energy efficiency and reduce your family’s energy bills!

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