Parts Of A Roof Drainage System

The top of the interior drain is a mesh or strainer that prevents debris from entering the.

Parts of a roof drainage system.

Drain ring a metal ring placed around the drainpipe to secure the roof drain to a surface such as a roof deck or parapet wall. Dome strainer or cover. The end part that closes the gutter so that water or stray debris won t flow out. A watertight ring holds the drain and strainer together around the roofing membrane and prevents.

No hub cast iron high volume roof drain with ductile iron dome. Watts drainage products rd 300 r series 6 in. Don t mistake as part of the roof drainage system an aluminum downspout that has been used as a cosmetic cover for hvac refrigerant lines as we illustrate in our photo at below left. Watts drainage products rd 300 r series 4 in.

And not to do anything that can cause the roof to hold more water either during or after a rainfall than it was. Conventional gutter systems such as those used on most houses are suitable for some low slope roofs. By mike silvers cprc frsa technical director mon sep 21 2020 the core of that article stressed the importance of not reducing the size of any type of roof drainage. Some a c installers use an aluminum downspout to cover the refrigerant and condensate lines that are routed from an attic mounted air handler down to an outdoor.

Roof drainage system considerations part 2 september 2020. Cast iron roof drain with 2 in. Flashing or clamp ring. The vent allows the entire drain system to maintain equal air pressure.

Has two adjoining gutters cut on 45. In either case the discharge shall be located so that it is readily visible by building occupants. Connects troughs to keep the water flow off the roof and away from the property. Connects the gutter to the downspout.

Secondary drainage shall be provided through the use of sidewall scuppers or internal roof drains. It is also called a clamp collar clamp ring or flashing ring. Secondary or emergency roof drainage is required wherever the buildup of water is detrimental to the roof structure. The first step in sizing a roof drain is to calculate the surface area of the roof that the.

The upper part of the vertical soil stack provides the venting component of the dwv system. It has an angled outer wall that directs the flow of water into gutter sections. An interior drain has several components. Roof water drain types and sizing sizing a roof water drain.