The primary purpose of any roof drainage system is to remove
water from roofs as quickly as possible in a controlled and
Factors including roof outlet size, shape, appearance and
anticipated drainage requirements need to be taken into account.
Design is usually the responsibility of consulting engineers
familiar with the roof construction, piping systems and additional
functions intended for particular roofs.
Building Regulations /
International regulations and local building codes must be observed
for all drainage installations. Local rainfall rates should be
taken into account.
Roof outlets are not multi-purpose and products are designed for
use with specific types of roof construction (e.g. cold roof, warm
roof, inverted roof parapet roof and balconies).
The depth of structural slab, thickness and location of
insulation and the type and location of waterproof membrane are
factors to consider at the outset of any drainage selection.