backup rod
A strip of plastic foam that is inserted in a joint to limit the penetration of sealant into the joint.
A strip of plastic foam that is inserted in a joint to limit the penetration of sealant into the joint.
A piece of wood at the corner of a ceiling and side wall; serves as the mounting for the ends
A wood strip which is fixed at the corner of a partition or wall to provide a nailing surface for
A type of check valve in a drainage pipe; reversal of flow causes the valve to close, thereby cutting off
A corrosion which results from substances (e.g., ammonia or sulfuric acid) produced by the activity of certain bacteria
A hand plane, the mouth of which is cut obliquely from side to side, so that it can work close
A coat of plaster applied to the back side of lath, opposite the finished surface.