Parts Of A Roof Drainage System

Secondary or emergency roof drainage is required wherever the buildup of water is detrimental to the roof structure.

Parts of a roof drainage system. 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. Dome strainer or cover. The end part that closes the gutter so that water or stray debris won t flow out. It is also called a clamp collar clamp ring or flashing ring.

If you follow it upward the vent stack penetrates through the roof of your home where it is open to the outside air. Conventional gutter systems such as those used on most houses are suitable for some low slope roofs. 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 troughs to keep the water flow off the roof and away from the property.

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. 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. Roof drainage system considerations part 2 september 2020.

The top of the interior drain is a mesh or strainer that prevents debris from entering the. Connects the gutter to the downspout. Secondary drainage shall be provided through the use of sidewall scuppers or internal roof drains. Watts drainage products rd 300 r series 4 in.

A watertight ring holds the drain and strainer together around the roofing membrane and prevents. And not to do anything that can cause the roof to hold more water either during or after a rainfall than it was. 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. Cast iron roof drain with 2 in.

Watts drainage products rd 300 r series 6 in. In either case the discharge shall be located so that it is readily visible by building occupants. The first step in sizing a roof drain is to calculate the surface area of the roof that the. It has an angled outer wall that directs the flow of water into gutter sections.

Roof water drain types and sizing sizing a roof water drain. Has two adjoining gutters cut on 45. An interior drain has several components. The upper part of the vertical soil stack provides the venting component of the dwv system.