Lead lined valleys the main elements that keep the water out are the upstands and welts at each side of the valley.
Tile roof valleys.
Closed valleys use the primary roofing material usually shingle or tile to cover the valley and give an appearance of continuity across the roof.
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.
An open valley has a gap usually about 6 inches between the tile or shingles at the valley area.
A common cause of valley troubles with tile roofing occurs when flat tiles are used in areas where closed valleys are preferred and a simple installation requirement is missed.
Roof valleys are the points at which 2 planes on your roof are joined which channel the water to flow off your roof.
Professional contractors know that one of the most vulnerable areas of any roof is the valley where the roof s planes intersect.
The open valley on the new york clay tile roof shown above has been patched more than once.
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.
Valleys come in three main styles.
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There are two main styles.
All three styles are good options and come down to personal preference when deciding which is better.
Open valley details on tile roofs.
Open clay tile roof valleys on clay or other tile roofs permit free drainage and are recommended in areas where leaves pine needles and other debris are likely to fall on the roof.
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Roof valleys are the vee shaped metal channels that run up and down the folds of a roof.
To make matters worse the lead has been cut by what i presume was the disc cutter as tiles were cut in situ.
Shedding water off the roof is absolutely crucial at valleys where two roof slopes are directing all the water they collect to the same point.
Often aging material improper fastening lack of maintenance and ice dams make valleys vulnerable.
If not properly protected and sealed a valley can channel water directly into the home with potentially disastrous consequences.
A closed valley is where the tiles or shingles are butted up against each other in the center of the valley.
The tile battens have been extended over the lead to within 10mm of the outer edge of the pointing.
A poorly designed valley can quickly lead to significant damage.
A common failure point on steep slope roof systems is at valleys.
A rusty valley on a tile roof which needs to be replaced typically where a valley is located on a roof.
These pictures show where roof valleys are located on a roof.
