Parts Of A Roof Drainage System

If you follow it upward the vent stack penetrates through the roof of your home where it is open to the outside air.

Parts of a roof drainage system.

It has an angled outer wall that directs the flow of water into gutter sections. No hub cast iron high volume roof drain with ductile iron dome. Roof drainage system considerations part 2 september 2020. In either case the discharge shall be located so that it is readily visible by building occupants.

A watertight ring holds the drain and strainer together around the roofing membrane and prevents. Conventional gutter systems such as those used on most houses are suitable for some low slope roofs. Cast iron roof drain with 2 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.

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. The first step in sizing a roof drain is to calculate the surface area of the roof that the. An interior drain has several components. 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.

Connects the gutter to the downspout. The top of the interior drain is a mesh or strainer that prevents debris from entering the. It is also called a clamp collar clamp ring or flashing ring. The vent allows the entire drain system to maintain equal air pressure.

The upper part of the vertical soil stack provides the venting component of the dwv system. Flashing or clamp ring. Dome strainer or cover. Secondary or emergency roof drainage is required wherever the buildup of water is detrimental to the roof structure.

Boot a transitional pipefitting used to convert and connect a drain s downspout to the building s storm system. Has two adjoining gutters cut on 45. Watts drainage products rd 300 r series 4 in. A substantial portion of the rdca product portfolio is made up of specification driven half round gutter round downspout large custom gutter large k style and 3 4 and 4 5 heavy gauge corrugated downspout.

And not to do anything that can cause the roof to hold more water either during or after a rainfall than it was. Roof water drain types and sizing sizing a roof water drain. The end part that closes the gutter so that water or stray debris won t flow out. 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.