Flood (Pour) Coat
From Roofing, Solar Power, and Spray Foam Insulation Wiki
Flood (Pour) Coat
The surfacing layer of bitumen into which surfacing aggregate is embedded on an aggregate surfaced built-up roof. A flood coat is generally thicker and heavier than a glaze coat, and is applied at approximately 45-60 pounds per square (2-3 kilograms per meter).