Flat Roof Drainage Plan

Each of these systems has its own pros and cons.

Flat roof drainage plan.

Poor drainage can lead to serious issues with flat roofing from leaks to structural damage. There are three types of drain systems commonly used on flat roofs. Unlike other roofing types that are slanted or sloped to allow water to drain automatically flat roofs need a built in drainage system to help remove moisture and debris. Determine 100 year 1 hour rainfall rate used for location of building.

Ipc provides four steps to size the roof drains on a building. Using tools from the international plumbing code ipc it s not that hard. This drainage system is composed of drains placed at intervals near the center of the roof and an internal network of gutters and pipes that move the water to the exterior of the building. A major maintenance issue shared between all types of roof drains is debris removal.

Inspect the current roof drain s and the drain line through the building for leaks and assure that the materials are. The one challenge with flat roofing is ensuring proper drainage. Size horizontal storm drainage piping. Inspect the roof surface and roof drains on a regular schedule to find and clear away any debris clogging the drains.

There are roof coating products available if there isn t enough slant or slope to accomplish this. Make sure that the roofing material is attached to the drain. These are the three types of drainage systems that work best for flat roofs. Select number of roof drains and calculate the roof area sloped to each drain.

One of the main issues on a roof happens when the roofing. The drains are often topped by a strainer that prevents leaves and debris from getting into the pipes.