“Universal” anti-backup roof drain is one of the best means of connecting a roof systems for rainwater pipes on flat roofs, gutters of various pitch, compluvia of industrial sheds and industrial buildings. It is particularly
suitable for application with all kinds bituminous membranes APP SBS and spread bitumen.
“Universal” anti-backup roof drain is made out of IGOM, a compound of synthetic rubber specially designed to obtain physical and technical properties for a flexible product, IGOM has high resistance to ultra violet rays, ozone and other atmospheric and chemical agents.
It can be used in a wide temperature range as it is extremely flexible at low temperatures and stable over a long time thanks to its physical and mechanical properties. Materials which therefore assure maximum
performance through out its life span.
The unit consists of a slightly conical cylinder with a wide base giving an ample anchorage to its ribbed surface for the membrane.
The conical cylinder is fitted with one or two round flanges which, when pushed solidly home into the pipe, ensure that there is no backing up of the water as these form a perfect seal with the inner surface of the pipe
itself.
This therefore avoids also the passage of water vapour and water backing up into insulation materials or under the waterproofing membranes causing serious damage.

The “Extralong” roof drain has the same characteristics as the “Universal” anti-backup roof drain, with stem pipe H. mm. 485 can be fitted on thick floors reduces the intermediate joints on the roof. Is fitted to bell end of pipe thus obtaining maximum drainage capacity for the full
diameter chosen and can be installed before the drain pipes.