Here is a closer look at common roofing terms.
Jack roof meaning.
Roof framing involves a lexicon all its own.
A jack rafter is a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both.
The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering.
2 a smoke vent of a chimney.
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.
If the jack does not have an adjustment that will make the walking surface level tilt the jack inward instead of outward for safety.
Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more.
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.
Roof terminology is also not rigidly defined.
Made of lead rubber or metal.
New asphalt built up roof bur surfaces should weather a minimum of 90 to 180 days prior to coating with black jack aluminum roof coatings.
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.
Roof shapes differ greatly from region to region.
Modified entries 2019 by penguin random house llc and harpercollins publishers ltd.
Definition of jack rafter.
When repairing or replacing a roof it pays to be familiar with these terms.
Also an airtight fitting attached to the roof and joining the internal and external sections of a vent pipe.
Thus there are hip jack rafters and valley jack rafters.
A secondary roof timber as a common rafter resting on purlins also.
North american 1 a platform or other support erected on a roof to facilitate repair painting etc.
Aluminum coatings do not perform well on roofs that pond water.
Roof jacks are usually constructed from steel and can be purchased from home centers lumber yards or hardware stores.
The total rise of hip and valley rafters is the same as that of common rafters.
Made of lead rubber or metal.
One of the pieces simulating extended rafters under the eaves in some styles of building.
Pre formed flange placed over a vent pipe to seal the roof around the vent pipe opening.
Most roof jacks are adjustable to compensate for different roof pitches.
What effect does ponded water have on aluminum roof coatings.
Dirt can accumulate in depressions and inhibit the reflectance of the coating.
