Just had a completely new lead roof done but not sure about the work and its still leaking, it is a victorian square gatehouse with a tiered limestone & lead flat roof and we have standing water which in places is over an inch deep, the roofer states this is correct and the roof shouldnot be angled so that the water runs into the fall pipe as it keeps it cool... doesnt sound right to me, roofers are members of the confederation of roofers anyone know who I can contact to check this out before I pay them.