| Roof Drains- for efficient internal drainage
of water from the roof surface. Roof Drains are an
effective year-round solution to removing water from the
roof surface in all weather and all seasons. Interior
Roof Drains have the advantage over gutters and
downspouts because interior Roof Drains are maintained at
the interior building temperature and are far less likely
to freeze and back up in harsh northern climates. With
the advent of sloped roof decks and tapered insulations,
it has also become necessary to include Overflow Roof
Drains to relieve dangerous overloading of the structural
system caused by heavy ponding water. How many Roof Drains do I need? See the Roof Drain Calculator |