Roof Valley Trays

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Roof valley trays.

Cut each side at the upper end of the valley to conform with the corresponding slopes of the roof. Roof valleys are the channels that run down the joints of the roof. A minimum code 4 lead saddle should then be dressed over the. They are typically metal and seal the joints between the two faces of roofing material generally tiles or slates directing water to run off into the guttering.

Attach the valley in place with 1 1 4 inch roofing nails and a shingle hatchet or hammer. Nevertheless they are often omitted from lead valleys. 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. Grp valley troughs provide you with a durable and cost effective alternative to lead products.

The upstands or tilting fillets at each side of the valley are an important feature of good valley construction as they keep the water within the centre area of the valley. At the ridge of a dormer roof or where one or more sections intersect with the ridge of a roof it is necessary to mark the angle of intersection and cut the valley trough prior to fixing. Grp valleys are manufactured from glass reinforced plastic. Pre formed aluminium valleys such as this one manufactured by associated lead mills have been designed for optimum performance as a highly cost effective alternative to the more traditional lead products.