Flat Roof Glossary

Built up roofing a flat or low sloped roof made up of layers of asphalt and ply sheets.

Flat roof glossary. The amount of fall of a roof is described as its pitch. A mansard roof is a four sided roof with two steep roof planes that meets with a flat plane on the top often punctured with dormers. Barge boards batten counter batten dormer eaves fascia felt roof cold felt roof hot flashing flat roof gable gauge hip hip board hip end margin nail sickness rafter ridge ridge board ridge tile sarking sarking board slate soffit tiles interlocking tiles plain tingle truss underfelt valley verge. Also referred to as zero 0 slope.

The way the roof falls determines which way the water drains off into gutters and outlets. A type of roofing used primarily in flat or nearly flat roofs. 2 part of a flat roof structure that receives the ends of the flat roof joists. Pvc and tpo membranes are considered thermoplastic membrane.

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. Flat roofs are not flat they have falls or slopes which allow the water to drain away and prevent ponding. Otherwise you may inadvertently end up with the wrong drain or part or the wrong size leading to more time that your roof lacks the proper. 3 part of a suspended timber floor construction that provides a level bearing and fixing point for the joists and uniformly distribute loads from the joists to the wall below the plate.

A membrane roof refers to the material that functions as waterproofing. When shopping for an industrial or commercial roof drain or replacement part it is important to be clear with a manufacturer or distributor what you need. Glossary of common roof drain and parts terms. What is a membrane roof.

It is usually employed on nearly flat or completely flat roofs to prevent leaks and move water off the roof itself. Flat or low slope roof a roof with a pitch of less than three feet of rise over a twelve foot run. Essentially horizontal or flat as in a roof deck or rooftop with no intentional slope to the roof drains. Flood coat the top layer of bitumen in an aggregate surfaced built up roofing membrane.

This type of roof needs a sealed system installation. Pvc and tpo membranes are considered thermoplastic membrane. Roofing glossary of terms a list of all common roofing terms and words with detailed definitions and explanations for each. The terms pitch and slope are simply two different ways of expressing the same measurement.