Residential Roof Terminology

An asphalt based roof cement formulated to adhere overlapping plies or asphalt roll roofing.

Residential roof terminology.

A roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. A hip roof is a roof in which four separate roof planes all come together at the top. A small structure projecting from a sloped roof usually with a window. A line made on the roof by snapping a taut string or cord dusted with chalk.

That part of a roofing waterproofing or flashing component that overlaps or covers any portion of the same or. Pitch this is the slope of the roof. The higher the number the steeper the roof. Roofing terms you should know deck sheathing.

An l shaped strip usually metal installed along roof. Occurs where overlapping materials are seamed sealed or. The same roof has a 4 12 or 1 3 pitch. Square hip roofs look like pyramids but hip roofs are also found on rectangular homes.

Ice dams occur when melted snow refreezes near the overhang of a roof blocking the path for water run off and building up a heavy wall of ice. An area of a roof with a valley on one side and a rake on the other and both come together at a point. The highest fire resistance rating for roofing as per astm e 108 or ulc s107. It is the number of inches a roof rises vertically for every 12 inches of travel horizontally.

The surface usually plywood or oriented strand board osb to which roofing materials are applied. What is an ice dam. A roof is typically referred to for example as a 4 12 or 4 pitch.