Design Buy Build Issue 45 2020 | Page 63

"A rendered finish will protect any underlying masonry substrate against wind, rain and the extremes of temperature and humidity." AESTHETICS This outer skin adds personality and character to a building and is one of the principal ways a designer can make their mark on how their creations are perceived by occupants and visitors. When specifying render and façade systems, it’s possible to create pretty much any colour you like with pigments simply mixed in with the render. Colour and texture will vary depending on the type of finish or solution selected whilst the application method, such as a scraped hand finishing or a machine sprayed textured finish, can have a noticeable effect on the appearance. Lime renders have also made a resurgence in recent years, not least due to their added breathability and versatility, but on account of the fact they add distinctive character to new buildings, as well as in the restoration and decoration of traditional buildings. THERMAL PERFORMANCE At a time when the UK needs to improve its woefully energy-deficient building stock, one of the most significant benefits of modern renders is that they can be combined with insulation to not only improve the aesthetics on the outside but also significantly improve a building’s thermal performance without affecting the interior space. Wraparound solutions such as Parex’s Parextherm External Wall Insulation (EWI) systems will significantly reduce heat loss though the external envelope and ensure a warmer more comfortable internal environment, whilst at the same time creating a better-looking exterior. PROTECTS AND WEATHERPROOFS A rendered finish will protect any underlying masonry substrate against wind, rain and the extremes of temperature and humidity. A good render will look good for longer and its durability will therefore reduce maintenance requirements. Parex is a render manufacturer with systems that are accredited to LABC and Premier Guarantee Zone 4 rating and meet the standards required by the NHBC. This means they can withstand the extremes of the UK climate, including the most exposed coastline areas. BREATHABILITY Our everyday living means that we create large amounts of moisture inside our homes which needs to escape. What we do not want is condensation and damp inside a property which is costly and time-consuming to remove. A breathable, decorative render will make for an attractive exterior, and at the same time assist in optimising the comfort of the occupants’ living environment. VERSATILITY Whatever the substrate there is a render to suit in a wide range of styles, finishes and colours. Rendered façades are a versatile, efficient and cost-effective system for any building regardless of the type or age of construction. They have potential to improve the outer skin of a building, update the aesthetics, adding limitless kerb appeal and are an important step in improving a building’s long-term thermal efficiency. For more information about the wide range of Parex render systems or for technical guidance visit Parex www.parex.co.uk/Render_Systems ROOFING, CLADDING & FACADES 63