CONCRETE & CEMENT
SMET OFFERS COMPREHENSIVE RANGE OF PROFESSIONAL RENDER SYSTEMS BACKED UP WITH A SUPERIOR LEVEL OF TECHNICAL KNOW-HOW… Superior render solutions
R ender is a uniquely versatile buildings, remodel existing and create fine façade detailing to any budget. Like any material that must withstand and repel the elements, the correct production and application are vital if it is to have longevity. Essentially, all modern renders are a composition of five elements – sand, cement, lime, water and the additives – which make the products perform. When combined in the correct quantities, these elements produce excellent material that can be used to coat virtually any building, to create new rendering results. However, if the ratios are not combined correctly, the materials will not perform. For instance, too much cement means the render hardens too
quickly, or develops too densely and too much lime additive means a slow cure process or loss of strength. All renders adhere to the substrate by a combination of mechanical key and suction. To determine the suitability of a render to a particular substrate or background, a close examination of the density of the substrate is required. All building systems have varying densities, i.e. engineered brick or block have a high density, while Poroton clay blocks have a low density. Choosing the correct render for the various systems is vitally important. From the substrate out to the surface, densities vary from dense to less dense, or from strong to less strong. Although traditional renders are usually a build-up of several coats to achieve
the correct steps in density, protection levels and aesthetic finish, modern manufacturing techniques now enable the production of single coat renders, achieving the same goals in a fraction of the time with consistent results. SMET supplies a wide variety of professional render systems designed for all building systems including traditional concrete block, brick, Poroton building systems, insulated concrete formwork (ICF), timber frame building systems, retrofits, historic restoration and conservation builds. Render products can also be spray- applied, thus speeding up the process dramatically when compared to the traditional hand-applied method. Bauprotec lime-cement or hydraulic lime-based renders are available in a
“SMET supplies a wide variety of professional render systems designed for all building systems.”
98 | NI BUILDER
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