A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Undercoat– A coating applied prior to the finishing or top coats of a paint job. It may be the first of two or the second of three coats. Sometimes called the Prime coat.
Undercoat (Cement plaster) – Cement plaster coats other than the final coat.
Underground plumbing– The plumbing drain and waste lines that are installed beneath a floor.
Underlay (Fixing Roof Tiles) – A flexible membrane fitted between the roof support structure and the battens.
Union– A plumbing fitting that joins pipes end-to-end.