The three methods to shingle a roof valley.
California valley roofing style.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.
A valley shingle is then installed parallel to the centerline and offset a couple of inches.
California valley includes an actual laminate shingle like you see in the field on your roof installed parallel and is called a bleeder shingle on one side of the valley typically about 2 away from the valley center.
Some homeowners prefer the consistent look that a woven valley provides.
California valleys the closed cut or open california valley is a distinctive style option for asphalt shingle valley construction.
Here is eric s method.
The open woven and closed cut methods are demonstrated.
The underlayment sheet metal liner if required and initial shingle covering into or through the valley follow the same.
With the california cut valley shingles from the smaller roof slope are installed across the valley onto the adjacent slope.
Look down the ridge of the valley metal to make sure it is straight from top to bottom and nail it off.
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.
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.
Strip short and extend a full strip through the valley.
Make sure the valley metal is straight before nailing it.
To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together.
With shingles bedded in cement it can be exported to other states.
Valleys are a prime leak area so it s important to be careful.
Woven valley shingle installation.