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.
Roof valley trays.
Grp valley troughs provide you with a durable and cost effective alternative to lead products.
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.
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.
Roof valleys are the channels that run down the joints of 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.
Benefits of grp valley troughs.
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We ve arranged our superb selection into grp valley troughs for tiled roofs and roof valley solutions for slate roofs.
Cut each side at the upper end of the valley to conform with the corresponding slopes of the roof.
Attach the valley in place with 1 1 4 inch roofing nails and a shingle hatchet or hammer.
Grp valleys are manufactured from glass reinforced plastic.
A minimum code 4 lead saddle should then be dressed over the.