General

A thin coating (such as sprayed neoprene) on the back side of a fabric to increase its durability, its resistance […]

On the theater stage, a large, taut, flat canvas, usually hung from the grid at the rear of the stage

An asphalt-coated water-repellent strip which is applied behind the joint where the vertical edges of two shingles meet.

Soil which is replaced in an area that has been excavated previously.

To repaint a surface, which has just been painted, with a return stroke.

To mop the back or underside of roofing felts with asphalt or tar when laying a built-up roof.

Nailing the plies of a built-up roof to the substrate (in addition to hot mopping) to prevent slippage. back nut