Everything I am reading states that, as per BS6229, flat roofs should have a minimum fall of 1:80 (i.e. 37.5mm in my case) and really ought to be desi gned for 1:40 (75mm) to allow for inaccuracies in construction, settlement of materials etc.
Unfortunately I have only just spotted this and the roof covering (consisti ng of OSB sheets, vapour barrier, 125mm solid board insulation, ply and a p olyurethane liquid membrane) along with cavity trays and flashing all now i n place.
Now I'm fretting about possible issues in the future. Am I right to be worr ied? Should I be seeking this being altered? I was going to speak to Buildi ng Control tomorrow to say what they say but whilst they might confirm the fall is low I can't see anything in the regs that mandates a fall and I don 't know whether BS6229 is mandatory either (it seems more of a code of prac tice).
Grateful for your thoughts.
P.S. For what it's worth I must admit to having a tendency to worry - to th e point of anxiety - about detail like this.