What is Rendering?
Rendering is applying a coat of render to the exterior of a home. The main reason for rendering your home would be to protect the wall materials from weathering and also to improve the look of them.
There is now a range of rendering choices, from cement renders to new insulating systems and more traditional lime and clay plasters.
Monocouche is the most popular render and is a one coat, ready mixed, cementitious, weather resistant, external decorative, through coloured render, suitable for most types of brick or blockwork. The through colour and one coat features allow fast application with shorter periods which reduces associated scaffolding costs and site costs plus permits the completion of ground works at a much earlier stage.
Acrylic renders are usually applied as a thin finish coat to seal and enhance the appearance or the underlying coat. They also bring colour and texture. Fibres are added to prevent cracking and give a durable, lasting finish. Silicone is also used, promising even longer life and the capacity to be self-cleaning.
External wall insulation
In the UK, much of the insulation upgrading has been done via the cavity wall, but cavity construction is uncommon in other countries. The preference in other countries is to add insulation to the outside of the existing walls and then rendering over the insulation.
External wall insulation involves fixing a layer of insulation material to the wall, then covering it with a reinforcement mesh and a special type of render. The finish is usually a textured render, pebble-dash or sometimes a brick slip or a brick effect render finish could be used.