At the central rubberized membrane field, roof surface preparation should begin by mapping one rubberized-membrane work area and one nearby section that will remain untouched. Keep drains, edge trim, hardware, and other roof details clearly separated while loose surface material is noted without turning every stain into a task. Mark the intended route before cleaning.
Move through the area in short sections, keeping the reference section available for comparison. Stop if the membrane condition changes. Finish with a prep code and a boundary note so the next
related roof surface preparation guide step returns to the same defined area.
