Machine applying render (rendering) in the hot temperatures of summer

When the temperature increases we are also greeted by rapid drying conditions. This can have major effects on newly applied materials, causing synthetic materials to dry out and cementitious materials to stiffen or pick up much quicker than normal. These rapid drying conditions can be caused by hot, dry or blustery conditions. When spraying render in hot weather you should look to apply to the side of the building in the shade and then follow the shade around the building. Cement based products, such as render, need to hold water for enough time to enable the cement to hydrate fully and reach full strength. Rapid drying conditions may leave most render materials weak. With this in mind if you cannot machine apply your render in the shade you may need to ?cool? the substrate/wall you are spraying on to. This can be achieved by spraying an even mist of clean water before application. Please remember this should be done in a controlled manner. You must avoid saturating the substrate as this can cause cracking. This advice is very important to remember especially when rendering onto block work.

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