Shallow type sill drain with flat grate.
Flat roof overflow drain.
Unfortunately there is no way for water to naturally drain away from flat roofs because they are flat.
Flat roofing does not drain naturally like sloped roofs that can rely on the force of gravity to remove water.
Pooling of water on the roof that can eventually lead to leaks or structural damage.
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.
Of course the best designed flat roof has the correct amount of pitch to drain the water off naturally.
Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs.
21500 q91 roof drain.
Watts drainage products rd 300 r series 4 in.
24500 35 roof drains.
Of course this is a con.
Scuppers shall not have an opening dimension of less than 4 inches.
Cast iron roof drain.
Cast iron roof drain with 2 in.
There are roof coating products available if there isn t enough slant or slope to accomplish this.
There are three types of drain systems commonly used on flat roofs.
Green roof drain overflow drain large sump flange.
Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.
If these roofing types are not fitted with a proper drainage solution they will experience poor drainage which leads to the following issues.
Green roof type with perforated standpipe.
24500 45 sill drain.
Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor.
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.
This causes water to stand which can cause major problems.
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.
21500 rdg1 roof drain.
Shallow sump with bronze dome and 45 degree outlet.
