General

A hinge having a flat plate or strap which is screwed to the face of a shutter or door.

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

To paint the reverse or hidden side of an object, usually for protection against the weather.

1. A threaded nut, one side of which is dished to retain a grommet; used in forming a watertight pipe