Page 71

RCI March 2018

2013 1 07/05/Layout Project1_FLAT ROOFING & WATERPROOFING SYSTEMS Mastic asphalt has been used at St Paul’s Cathedral Mastic asphalt has been used at Brighton Town Hall 1906, and it has only recently been replaced by a MAC-approved contractor, so it has provided over 100 years’ of effective waterproofing. Even though competition in the roofing sector is now very tough, it’s unlikely that there are any other roofing systems that can boast a comparable lifespan. The Building Research Establishment has officially stated that asphalt roofing is capable of lasting 50-60 years, and we have many examples well in excess of this. Mastic asphalt simply outperforms other membranes when it comes to lifecycle costs,” he added. 068 MARCH 2018 RCIMAG.COM Longevity of mastic asphalt The heritage market is a key sector for the industry and mastic asphalt is frequently specified by the National Trust and English Heritage, as well as other public and private owners of prestigious buildings for refurbishment projects. Buckingham Palace is testament to the longevity of mastic asphalt. On top of the Royal household is a rooftop of mastic asphalt that has kept the building dry for well over 80 years. Other heritage applications include the Houses of Parliament, the Tower of London, Tower Bridge, Edinburgh Castle and the 19th Century Grade I listed Lancing College in Sussex. Although mastic asphalt is a traditional material that was first patented in 1837 and has been around for years in more simple guises than today, it offers durability and wear resistance far beyond modern alternatives. Malcolm says that a key objective is to ensure that exceptional quality and workmanship standards are maintained for the installation of waterproofing installations utilising mastic asphalt. To maintain the industry’s reputation and ensure high-quality applications for every single project, only trained applicators are permitted to install mastic asphalt under the council’s strict rules. “Clients are increasingly looking for back-up from installing contractors. Being a MAC member enhances the reputation of a contractor and gives them a badge of quality and assurance that they meet the very highest of standards with regards to factors, such as trading and credit history, insurance policies and quality of workmanship,” Malcolm said. “Before being accepted as a MAC member, a member of the team will inspect the work that a contractor has carried out in the past, and this is a continual process throughout their membership. The last thing we want to do is promote poor workmanship.” Craft training programme Mastic asphalt is one of the few construction activities still regarded as a ‘craft trade’. The skilled work involves ensuring that asphalt is at the correct temperature, and then spreading it using traditional techniques to coat the surface. A thermoplastic material that changes shape when heated, mastic asphalt cures to form a hard, durable, finished product to suit all applications of mastic asphalt. Malcolm says it is absolutely critical to attract young people to the mastic asphalt industry, and urges roofing contractors to consider employing more apprentices to help create the talent of the future and ensure that the skill of laying mastic asphalt is maintained, thus preventing a skills shortage. The MAC has demonstrated its commitment to protecting the future of the mastic asphalt industry by supporting a CITB-approved threeyear training programme, which is delivered at London’s Hackney Community College. The only further education college in the country to deliver a training course in mastic asphalt, the craft training programme is said to be one of the most demanding in the construction industry and leads to a Level 3 NVQ qualification. Students are given the tools, skills and expertise to safely apply the product in a variety of ways on various substrates, with the support of MAC and MAC members such as IKO. The programme includes practical and theoretical training to use mastic asphalt in a wide range of applications involving roofing, flooring, paving and tanking. Malcolm concluded: “With awareness initiatives underway, a growing MAC membership and time-proven examples of durability, the future is looking bright for the mastic asphalt industry. Alongside MAC members, we’re helping to ensure that the industry is fit for the future with a growing workforce that is dedicated to quality.”


RCI March 2018
To see the actual publication please follow the link above