• External Wall Rendering

Rendering Walls / Exterior Plastering

Rending is the term commonly used for exterior plastering. It is in principle the same as plastering in that it is a wall covering, but with rendering, sand and cement are used instead of plaster to provide a more robust surface to withstand exposure to the elements. It also serves to add a layer of insulation and a waterproof coating.

Rendering exterior walls can totally transform the appearance of a building and its grounds. Rendered walls can often breath new life into otherwise damaged, dull or dilapidated wall surfaces and allow for different structures to be made to match.

An exterior render coating is often used to modernise, reinvent and create a new stylised look by allowing the walls to be painted to fit in with a new design scheme or to merge new and old building structures.

Common Uses of Rendering:

  • To create a flat exterior wall surface

  • To cover breeze blocks or unsightly brickwork

  • To patch-in building alterations, uneven surfaces, or bricked-up doors and windows

  • To conceal pebble dashed or patterned plaster finishes.

  • To add extra insulation

  • To create plinths at the base of the wall

How is a wall rendered?

Essentially rendering a wall is a two-stage process of coating exterior walls.

Scratch Coat:

This 1st coarse coating of sand and cement bonds to the existing surface, covering-up any holes and blemishes and forms a level layer for the topcoat.

Top Coat

Once the scratch coat has set a fine grain top coat made from a mix of sand and cement is trowelled over to create a smooth, waterproof sealing layer. Once this layer has set it is ready for painting.

Exterior Wall Plinths

A plinth is a section of render at the bottom of a wall which serves to form a vital break between rendered walls and the ground surface. Its purpose is to minimise the prospect of damp affecting the walls of your property below the damp course.

A properly rendered plinth should last up to about 40 years, but as they are intended to repel damp, it also means that the plinths are the most likely part of a building to be damaged by damp. It is therefore important to have them properly built and maintained, so regular checks are advisable.

Arrange your free home survey and quotation

If you need a plasterer, are considering renovating or modernising your home, or are in need of a skilled tradesperson to make sympathetic repairs, please do not hesitate to give us a call. We will be happy to arrange a home visit at a convenient time to provide a full quotation, or for the small jobs we may be able to quote a price over the phone.

Call us on: 07788 134661

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