Sport at the highest level

RENOLIT ALKORPLAN scores high on Deltion College!

CHALLENGE

A sports field on top of the roof. A surprising and exceptional RENOLIT achievement that absolutely draws the attention… Deltion College in Zwolle (NL) really is an exceptional case. This college offers amongst others education courses to prepare for service in the Armed Forces - Navy, Army as well as the Air Forces. No doubt sports are an important part of life on the campus. Then came the inspiration to install an artificial grass sports field on top of the roof of the newly constructed multifunctional building. Space-saving and functional! The choice to specify RENOLIT ALKORPLAN as roofing material was a shrewd decision, as RENOLIT ALKORPLAN offers a solution not only for mechanically fixed roofs but also for ballasted roof systems…

SOLUTION

The highest rooftop, a steel frame construction, has been installed with a PES-reinforced mechanically fixed RENOLIT ALKORPLAN F roofing membrane. For the lower concrete roof – the sports field to be – a different product was required: RENOLIT ALKORPLAN L! A glass fleece reinforced membrane with an excellent resistance to microorganisms, specifically conceived for ballasted roofs. Before installing the insulation, a bituminous vapour barrier was placed on top of the concrete. Next came a first layer of 70 mm thick aluminium-faced PIR insulation, followed by a second layer of 100 mm thick unfaced polystyrene insulation. 

To avoid direct contact between the roofing membrane and the PS insulation a glass fleece separation layer was added. Afterwards the RENOLIT ALKORPLAN membrane was loose laid and hot air welded. In accordance with the RENOLIT installation instructions the seams were sealed with RENOLIT ALKORPLAN seam sealer. A little bit of effort for extra security!