When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.
Roof valley construction drawings.
Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet.
A disadvantage of the hip roof is that it is more difficult to construct than a gable roof.
These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular.
Another common design in the northeast is the saltbox which is a gable roof with one longer side.
The three methods to shingle a roof valley.
The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
It is the strongest type of roof because it is braced by four hip rafters.
The hip roof has four sloping sides.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
These hip rafters run at a 45 angle from each corner of the building to the ridge.
In many cases with purchased house plans the details of the roof construction including rafter design are included.
Also different architectural styles will use the same type of roof.