Frost Brochure Issue 03 - Catalog - Page 72
Cold Roof Assemblies - Domed Gratings
Domed rain water outlets suited to cold
roof construction where the waterproof
membrane is located on top of the
roof deck (diagram page 65). Body and
clamp: Cast iron. Dome: Polycarbonate
or Aluminium as detailed. Area drained:
Based on a head of 35mm and rainfall
intensity of 75mm per hour. For details
of accessories please see pages 84-88.
Note 1 - smaller outlet sizes 2” & 3”
available for threaded outlets.
Ø349
105
6
132
Ø220
4 BSP
Frost roof drain domed grating with medium sump body and threaded outlet
See Note 1
72
Part Number
Outlet Size
Deck Opening
(mm)
Area Drained
(sq.m)
33.0034
£72.80
BSP 4
240
290