Jack Roof Meaning

Definition of jack rafter.

Jack roof meaning. Aluminum coatings do not perform well on roofs that pond water. Thus there are hip jack rafters and valley jack rafters. Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more. Modified entries 2019 by penguin random house llc and harpercollins publishers ltd.

The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering. The total rise of hip and valley rafters is the same as that of common rafters. The steep roof with windows creates an additional floor of habitable space a garret and reduces the overall height of the roof for a given number of. A secondary roof timber as a common rafter resting on purlins also.

Roof terminology is also not rigidly defined. Referred to by various terms pipe boot jack plumbing boot jack and or no caulk or leads. Also an airtight fitting attached to the roof and joining the internal and external sections of a vent pipe. One of the shorter rafters used in a hip or valley roof.

Most roof jacks are adjustable to compensate for different roof pitches. Noun a rafter having less than the full length of the roof slope as one meeting a hip or a valley most material 2005 1997 1991 by penguin random house llc. A jack rafter is a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both. Dirt can accumulate in depressions and inhibit the reflectance of the coating.

Pre formed flange placed over a vent pipe to seal the roof around the vent pipe opening. 2 a smoke vent of a chimney. If the jack does not have an adjustment that will make the walking surface level tilt the jack inward instead of outward for safety. Usages vary slightly from region to region or from one builder or architect to another.

North american 1 a platform or other support erected on a roof to facilitate repair painting etc. Roof jacks are usually constructed from steel and can be purchased from home centers lumber yards or hardware stores. When repairing or replacing a roof it pays to be familiar with these terms. One of the pieces simulating extended rafters under the eaves in some styles of building.

Made of lead rubber or metal. Here is a closer look at common roofing terms. Roof framing involves a lexicon all its own. A mansard or mansard roof also called a french roof or curb roof is a four sided gambrel style hip roof characterized by two slopes on each of its sides with the lower slope punctured by dormer windows at a steeper angle than the upper.

Roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. Made of lead rubber or metal.