Definition of the term Aerator
An apparatus that mixes air into flowing water. It is screwed onto the end of a faucet spout to help reduce splashing.
Definition of the term Collar Beam
In carpentry, a tie that keeps the roof from spreading. They serve to stiffen the roof structure. Connects similar rafters on opposite sides of roof.
Definition of the term Fire Rated
Descriptive of materials that have been tested for use in fire walls.
Definition of the term Manufacturers Specifications
The written installation and/or maintenance instructions which are developed by the manufacturer of a product and which may have to be followed in order to maintain the product warrantee.
Definition of the term Ridge Cut
The end cut on a rafter that fits to the ridgeboard.
Definition of the term Undercoat
A coating applied prior to the finishing or top coats of a paint job. It may be the first of two of three coats. In some usage of the word…
Definition of the term Aggregate
Crushed stone, slag or water-worn gravel that comes in a wide range of sizes which is used to surface built-up roofs.
Definition of the term Collar Tie
A horizontal board attached perpendicular to rafters.
Definition of the term Fire Retardant Chemical
A chemical or preparation of chemicals used to reduce flammability or to retard spread of flame.
Definition of the term Mason's Hammer (Bricklayer's Hammer)
Tool shaped like a chisel to trim brick or stone.