The mastic asphalt product specified was a specially formulated roofing grade material , incorporating advanced polymer technology to give the ideal combination of long term durability , increased fatigue resistance , improved temperature stability and ease of installation . It can be worked around roof lights and other projections to provide a completely seam free membrane .
During the application , it became apparent that the carpenter had not created falls in the roof , so Oxford Asphalt had to create the necessary falls to the perimeter gutter outlets within the mastic asphalt system . Three sides to the roof had shallow box gutters and , by using mastic asphalt , it was possible to create a minimal fall with no open joints , as opposed to lead which would have required a greater fall . The main roof area was completed and then protected so that the slate roofing element of the works could be carried out . Asphalt lead roll was then added after completion of the pitched roof areas .
Terry Grandi added : “ This project presented an excellent opportunity to show what a diverse material mastic asphalt can be in circumstances where the client had a particular vision but was unsure of what roofing material should be used . Over the years , Oxford Asphalt has been involved in many similar projects , such as St Edmund Hall at the University of Oxford which was a former winner of the Challenge Trophy at the Mastic Asphalt Council ’ s Annual Awards .”
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