SAS Spring Newsletter 2022

SYSTEM BREAKDOWN Following any potential surface preparation requirements, the insulation material, either mineral wool or EPS, is adhered to the surface using our specially designed high polymer basecoat. The insulation slabs are mechanically fixed to the substrate, then the basecoat is applied and fully embedded with a fibreglass reinforcement mesh to tie the whole area together. Once cured, a colour primer is applied followed by a highly water-resistant and flexible silicone thin coat. The whole system achieves a 30-year BBA certification and comes with a 10-year system warranty. INSULATION OPTIONS: ProRend EIFS can be installed using either expanded polystyrene (EPS), or mineral wool insulations. Both options of ProRend EIFs boast superb insulation properties but principally for different property types. THE ADVANTAGES OF USING EIFS: EXPANDED POLYSTYRENE - EPS Our premium platinum insulation has fantastically low thermal conductivity, drastically decreasing the overall heat lost through your walls. As the most cost-effective of the two insulants, EPS is often the material of choice for residential renovations. MINERAL WOOL Our high-density mineral wool slab is a fibrous material formed by spinning or drawing molten mineral or rock materials. The composition of the mineral wool makes it incredibly fire-resistant; this is particularly useful for any high rise or commercial buildings where fire safety is paramount. Mineral Wool can be utilised as a sole insulant in ProRend EIFS projects or serve as a fire barrier in EPS applications. When considering a renovation to improve thermal efficiency, the regulations refer to the thermal requirements as stated in Approved Document L1B. L1B states that any newly constructed thermal elements or thermal elements constructed as replacements for existing elements should achieve a U-value of 0.28 W/(m².K). Two traditional wall makeups are solid walls or brick cavities. We have modelled the reduction in U-value based on various thicknesses of EPS used in our system. As you can see from the graph, 90mm insulation is often enough to meet the regulations of 0.28 W/(m².K). Thicker insulation can, of course, be used to further decrease the U-value and make the building that much more thermally efficient. Whatever your property, if you are looking to increase the thermal efficiency while transforming the exterior, get in touch and SAS will put a bespoke specification together for you and calculate your U-value. Article continued from Page 1... 2

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