How can drainage be enhanced on a flat roofing installation or roofs with 1/8 inch per foot or less slope?
In addition to the number and size of roof drains, drains should be positioned in low areas to eliminate ponded areas. Also, crickets and saddles may be incorporated to divert water and reduce the accumulation of water. If necessary, tapered insulation may be incorporated throughout the roof or in localized areas where additional drainage is needed.