Definition of the term Fire Block
Short horizontal members sometimes nailed between studs, usually about halfway up a wall. See also 'Fire Stop.'
Definition of the term Mantel
The shelf above a fireplace. Also used in referring to the decorative trim around a fireplace opening.
Definition of the term Ridge
The horizontal line at the junction of the top edges of two sloping roof surfaces.
Definition of the term Ultraviolet
The invisible rays of the spectrum of light which are at its violet end. Sometimes abbreviated U.V.
Definition of the term Adversely Affect
Constitute, or potentially constitute, a negative or destructive impact.
Definition of the term Collar
In roofing, a conical metal cap flashing used in conjunction with vent pipes or stacks usually located several inches above the plane of the roof for the purpose of shedding…
Definition of the term Fire Brick
Brick made of refractory ceramic material which will resist high temperatures. Used in fireplaces and boilers.
Definition of the term Manufactured Wood
A wood product such as a truss, beam, Glue Lam or joist which is manufactured out of smaller wood pieces and glued or mechanically fastened to form a larger piece.…
Definition of the term Ridge Board
The board placed on edge at the ridge of the roof into which the upper ends of the rafters are fastened.
Definition of the term Ultraviolet Degradation
A reduction in certain performance limits caused by exposure to ultraviolet light.