Detailing
Edge details
Upstands at parapets and abutments should be protected by ROOFMATE™ SL boards set vertically and covered with an apron flashing (Figure 08).
Extending the insulation in this way affords a consistent level of protection and helps to avoid thermal bridging. Apron flashings should be carried to at least 150mm above the surface of the ballast.
Kerbs, including those at verges and rooflights, should be high enough to contain the insulation and the ballast. ROOFMATE SL boards should be fitted tight against kerbs.
Drains and gutters
Outlet gratings may be raised on spacer rings to reduce the risk of blockage: cut a hole in the ROOFMATE SL boards to accommodate the outlets (Figure 07 ). A paving slab on spacer pads may be used above a flat grating (Figure 09).
Where possible, line internal gutters with ROOFMATE SL to prevent thermal bridging - the gutter may be spanned by paving slabs on spacer pads (Figure 10).
Where the roof drains to an edge gutter terminate aggregate ballast with a row of paving slabs on suitable supports (Figure 11) and protect the edge of the ROOFMATE SL boards with a cover flashing.
