Look down the ridge of the valley metal to make sure it is straight from top to bottom and nail it off.
Roofing a speed valley.
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.
Courtesy of mike roberson.
Today most linings are made of metal.
Here s a valley where the roll roofing liner has.
While the slope of the common rafters are expressed as x in 12 the slope of the hip and valley rafter on the same roof will be x in 16 97 so where two roof sections intersect to form a 90 angle a regular hip or valley and each roof.
The valley is protected from moisture intrusion by a lining.
With a closed cut valley there s no need to shingle the two roof planes at the same time.
The three methods to shingle a roof valley.
On a related note the pitch properly the slope of a hip or valley rafter will not be the same as the pitch of the adjacent roof sections.
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Instructional video on how to install a closed roof valley as part of installing tamko building products heritage series of laminated asphalt shingles.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
This recommendation includes iko s premium shingles.
Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled.
When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.
Any one have experience with no cut valleys speed valley long island valley or california valley in the north sates such as north iowa to minnesota with steep roofs more like 14 12 the valley i refer to is this htt.
Here is eric s method.
Make sure the valley metal is straight before nailing it.
Closed cut valley even if i work toward the valley with three tab shingles cut valleys are faster than woven valleys hands down.
This is an open valley lined with shingles and is a defective installation.
But in the past and in low end installations roll roofing or a similar material is used.
I usually find the middle of valley then move up hill two inches and pop a line parallel to the valley and set the edge of the valley shingle on that line.
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.
A california valley is faster than cutting all of the shingles up a valley.
