Definition of the term Return
In heating and cooling systems, a vent that returns cold air to be warmed. In a hot air furnace system, it is located near an inside wall.
Definition of the term U-Value
A measure of air-to-heat transmission (loss or gain) due to the thermal conductance and the difference in indoor and outdoor temperatures. As the U-value decreases, so does the amount of…
Definition of the term Adhesion
The property of a coating or sealant to bond to the surface to which it is applied.
Definition of the term Cold Process Adhesive
Mastic prepared with SBS modifiers to adhere laps, flashing and joints of built-up or low-slope roofing without hot-mopping or torching equipment.
Definition of the term FIP (Female Iron Pipe)
Standard threads that are on the inside of a pipe fitting.
Definition of the term Mansard Roof
A roof which rises by inclined planes from all four sides of a building. The sloping roofs on all four sides have two pitches, the lower pitch usually very steep…
Definition of the term Ribbon (or Girt)
Normally a 1"x4" board let into the studs horizontally to support ceiling or second-floor joists.
Definition of the term U.L. (Underwriters Laboratories)
A private research firm located in the United States that attempts to classify and determine the safety of various materials and products.
Definition of the term Adhesive Failure
Loss of bond of a coating or sealant from the surface to which it is applied.
Definition of the term Cold-Method or Lap Cement
Special multipurpose adhesive for low-sloped, cold-applied roof construction. Bonds 19" selvedge, mineral surface and cap sheets to the underlayment. Doubles as an adhesive on 2" selvedge lap of mineral-, granule-…