How To Put In A Roof Drain

It is crucial to have a proper drain for a flat roof.

How to put in a roof drain.

Size horizontal storm drainage piping. Select number of roof drains and calculate the roof area sloped to each drain. Cities based on inches per hour that may fall during a storm of one hour duration and a 100 year return period. I usually dig a trench about 12 to 14 inches deep for downspout drain lines.

A drain that is placed inside a basin makes for the most practical design the next video shows a quick way to tie an existing drain to a new roof. To prevent erosion make a rock bed around the end of the tube. The fastest way is to rent a trenching machine from a local tool rental. One of the most overlooked.

Regardless of the type of leaf filter you have you still need to do regular maintenance to keep it clean from debris. Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line. Flat roof drains scuppers gutters and drainage systems on flat roofs. A drain strainer must be designed to allow small debris and water to flow freely to the drain.

Size vertical storm drainage piping. If you have hard clay soil or rocky soil you can use an electric hand held demolition hammer tool to dig a trench. The roof should slope toward the drain. Step 3 fit the drain.

Appendix b in the ipc provides rates of rainfall for various u s. The placement of the drain to other rooftop units should be carefully determined. Screw a drain cover over the end of the tubing as it approaches daylight to keep critters out. If the drain was messed up by other roofers then the second best thing to do is to install a retrofit.