Bauder Parapet Emergency Overflow Stainless Steel DN70

A stainless steel Parapet Emergency Overflow with an 800 mm long spigot. Comes with a fixing plate and fixing plate flange. 

For use with Bauder bituminous waterproofing membranes and liquid applied membranes. It is used in conjunction with other roof drainage outlets to ensure that there is no water ingress into the building and that the structural load of the roof is not exceeded and provides a visible warning that the roof is holding excessive water. 

The fixing plate and fixing plate flange are used when the parapet is insulated (warm roof upstand). The insulation can be clamped between the plate and the overflow outlet. 

They are not suitable or intended for connection to internal pipework that is within a wall construction or boxed in and is inaccessible after construction. 

It is often part of a blue roof specification and can be used with Bauder membranes. Visible emergency overflows are recommended as part of NFRC Blue Roof guidelines.