Related illustrations

0090

Built up roofing membrane - 4 ply

· p. 23

The illustration shows a cutaway of a four-ply built-up roofing membrane over roof sheathing. A dry-laid felt base layer is nailed to the deck with a minimum 2-inch overlap at its edges. Above this base, 36-inch-wide roo

0108

Built up roofing membrane - curbed edge

· p. 26

The illustration shows a section through the curbed edge of a built-up roof with a four-ply membrane, an asphalt flood coat, and gravel surfacing over roof sheathing. The membrane turns upward along a triangular 3x3 cant