Flat Roof Overflow Drain

This causes water to stand which can cause major problems.

Flat roof overflow drain. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application. There are three types of drain systems commonly used on flat roofs. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Smith carefully designs and manufactures a full line of roof drains deck drains scupper drains promenade and parking area drains and more to satisfy both the artistic eye of the architect and the calculating mind of the engineer.

Each of these systems has its own pros and cons. Unfortunately there is no way for water to naturally drain away from flat roofs because they are flat. Watts drainage products rd 300 r series 4 in. 21500 q91 roof drain.

Green roof drain overflow drain large sump flange. The 2006 international residential code specifies the size and locations for overflow drains on residential structures. 21500 rdg1 roof drain. Shallow type sill drain with flat grate.

Flat roofs that do not drain over the roof edge and roofs that have parapet walls must utilize roof drains to get the water off the roof. When scuppers are used for secondary emergency overflow roof drainage the quantity size location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by section 1611 1. Where you have roof drains you are also required to have overflow drains. If these roofing types are not fitted with a proper drainage solution they will experience poor drainage which leads to the following issues.

Flat roofing does not drain naturally like sloped roofs that can rely on the force of gravity to remove water. Shallow sump with bronze dome and 45 degree outlet. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor. Cast iron roof drain.

Of course this is a con. There are roof coating products available if there isn t enough slant or slope to accomplish this. 24500 35 roof drains. Scuppers shall not have an opening dimension of less than 4 inches.

Copper roof drain with overflow horizontal outlet. Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally. 24500 45 sill drain.