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Commercial Rendrering

Many people may want to have the walls of their homes rendered to hide surface blemishes or simply to provide home owners with a different look for their home. Rendering is not limited to the domestic sphere and commercial rendering has been around for a long time. More businesses now prefer to have some sort of finish on their exterior walls, although in the past most commercial rendering was little more than roughcasting. Besides a render being applied to business premises, commercial rendering may also refer to the process of having the render applied by a professional.


Very often roughcasting has been used as finish in the actual construction of a building rather than something that is added on later. While roughcasting is sometimes used in domestic rendering, historically it has been commercial rendering and rendering that is used in the construction of outbuildings. Where commercial rendering involves roughcasting it means that gravel and small pebbles have been added to the concrete or plaster mix that is designed to finish off the exterior walls of a building. Roughcasting takes some time to dry out, but when that happens the wall is left with a rough, textured finish that lasts for years and requires little or no maintenance. Roughcasting is not the same as pebble dashing a wall because pebbles are put into the original mix rather than thrown at a newly cemented wall.

How Roughcasting Began

Roughcasting actually started out as a finish for commercial buildings and in some countries seashells are added to the mix instead of small pebbles. Tinting and colour can also be added to a roughcasting mix and this is sometimes done with domestic properties or with outbuildings. Sometimes a board is used to press the roughcasting flat and to achieve a commercial rendering with an even finish. The pressing out of roughcasting is very similar to the way someone might float out a concrete wall. One of the problems with roughcasting as commercial rendering is that over time it can become damaged and is extremely difficult to repair, in most cases when damage occurs it is best to remove the existing cover and apply a new commercial rendering.

Professional Rendering

While commercial rendering may apply to a certain type of render that is used for commercial premises and outbuildings, commercial rendering can also refer to renders that are undertaken by professionals. Rendering can be a long and difficult job, from preparing the surfaces to accept the render, to applying it, waiting for it to dry and then texturing and painting it. It is recommended that if you want your exterior walls rendered, you save up the money and opt for commercial rendering. A good commercial renderer will undertake the preparation work, which involves hosing down the walls and treating any mould with a fungicide, before applying the cement, stone or acrylic render. Once a commercial rendering has been completed it can take up to four weeks to dry out, although acrylic commercial rendering is usually dry within a matter of days.

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