Rendering can improve the waterproofing and fire rating of a building, but the primary reason for doing it is aesthetic. In fact, in Mediterranean countries and elsewhere in Europe, a brick structure is not considered complete until it is rendered.
Today, there are also more high tech ways to accomplish rendering. Acrylic pre-mixed rendering products have greater waterproofing properties and can be applied to surfaces standard render cannot adhere to. In addition, some renders can be applied with special spray equipment. Acrylic renders have the added advantage of setting within 24 hours, while traditional renders take up to 28 days to fully set.
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