Roof Valley Detail Uk

One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.

Roof valley detail uk.

A common misconception is that the mortar bedding is there to prevent water access. Essentially there are three main ways to shingle a roof valley. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. Water collects in a valley to flow off the roof.

Cover valley with a strip of underlay not less than 600mm wide underlapping general underlay. The valley is a drainage channel below the level of the roof which is constructed of wood with the lead to provide the waterproofing a closed valley with a pre formed grp strip. Then he will enlarge the asphalt shingle to shut the entire valley area. Marley universal grp dry valleys provide totally weathertight detailing that are fast and easy to install and compatible with all marley concrete clay plain and interlocking tiles.

Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks. We ve arranged our superb selection into grp valley troughs for tiled roofs and roof valley solutions for slate roofs. 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. If you can t find it here give our friendly customer services team a call on 01752 692760 and they ll be glad to help you.

Woven closed cut and open. It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential. Valleys are one of the most vulnerable parts of the roof. In case of an open valley you will need to get an extra layer of lining inside the valley.

Looking for something specific. All three types of construction can be attractive. As in the lead valley example any water drains into the grp strip and then down into a gutter. A roof valley is formed where two roof slopes meet.