Parts Of A Roof Drainage System

The upper part of the vertical soil stack provides the venting component of the dwv system.

Parts of a roof drainage system.

Flashing or clamp ring. It is also called a clamp collar clamp ring or flashing ring. A watertight ring holds the drain and strainer together around the roofing membrane and prevents. 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.

Boot a transitional pipefitting used to convert and connect a drain s downspout to the building s storm system. The vent allows the entire drain system to maintain equal air pressure. Conventional gutter systems such as those used on most houses are suitable for some low slope roofs. Connects troughs to keep the water flow off the roof and away from the property.

Watts drainage products rd 300 r series 6 in. No hub cast iron high volume roof drain with ductile iron dome. Connects the gutter to the downspout. 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.

And not to do anything that can cause the roof to hold more water either during or after a rainfall than it was. 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. Roof drainage system considerations part 2 september 2020. Secondary or emergency roof drainage is required wherever the buildup of water is detrimental to the roof structure.

The end part that closes the gutter so that water or stray debris won t flow out. Cast iron roof drain with 2 in. Has two adjoining gutters cut on 45. An interior drain has several components.

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. The first step in sizing a roof drain is to calculate the surface area of the roof that the. Watts drainage products rd 300 r series 4 in. If you follow it upward the vent stack penetrates through the roof of your home where it is open to the outside air.

It has an angled outer wall that directs the flow of water into gutter sections. Secondary drainage shall be provided through the use of sidewall scuppers or internal roof drains. The top of the interior drain is a mesh or strainer that prevents debris from entering the. Roof water drain types and sizing sizing a roof water drain.