To ensure adhesion, the surface to be rendered is initially hosed off to ensure it is free of any dirt and loose particles. Old paint or old render is scraped away. The surface is roughened to improve adhesion. For large areas vertical battens can be fixed to the wall every 1 to 1.5 metres, to keep the render flat and even.
Cement render consists of 6 parts clean sharp fine sand, 1 part cement and 1 part lime. The lime makes the render more workable and reduces cracking when the render dries. Any general purpose cement can be used. Various additives can be added to the mix for increasing adhesion. Coarser sand is used as the base layer and slightly finer sand for the top layer.
K Rend Scraped Texture Finishes are the first to have achieved the prestigious Kitemark license to BS EN 998:2003. The Kitemark® is the world's premier symbol of trust, illustrating our commitment to providing you with the highest standard of quality products and service.
K Rend Scraped Texture Finish external render system forms an attractive range of one coat applications plastered directly on to block work. They can also be used as a finish in conjunction with a K Rend Base Coat.
weber.pral M is a one coat, ready mixed, cementitious, weather resistant, external decorative, through coloured render, suitable for most types of brick or blockwork. Factory produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. The through colour and one coat features allow fast application with shorter programme periods, thereby reducing associated scaffolding and site costs and permitting the completion of ground works at an earlier stage. weber.pral M has been awarded an A+ Green Guide Rating as defined in the BRE Global 2008 Green Guide to specification.