We describe how to construct three common styles of roof valley.
Roof valley detail.
One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.
Water collects in a valley to flow off the roof.
Special pricing available for large quantities.
This article discusses details and specifications for roof valley flashing for best construction roof leak resistance.
A roof valley is formed where two roof slopes meet.
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.
Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.
Open valley closed cut valley and woven roof valley and we include roof valley underlayment and nailing specifications.
Essentially there are three main ways to shingle a roof valley.
A common misconception is that the mortar bedding is there to prevent water access.
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.
It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential.
Woven closed cut and open.