The width of the open valley is dependent upon the roof pitch and the volume of water expected to drain into the gutter.
Lead valley gutter detail.
Autocad 2000 dwg format for a full range of ssq natural slate tiles please visit.
Mm 4 1500 750 5 2000 800.
Defects here often seep quietly for months or even years providing the ideal conditions for dry rot wet rot insect infestations and other forms of decay.
3a flashings apron and cover.
Traditionally in applications such as lead lined gutters lead sheet lengths are joined by overlapping them at drips that stand at least 50mm high.
In the old days the lead lining pieces were just lapped and water ingress was inevitable.
Thin plywood linings are fitted over the valley boards to maintain a smooth finish under a lead lined valley.
For lead lined valleys the tiles should be cut and bedded as for valley tiles except that the mortar should be bedded on an undercloak to prevent direct contact between the lead and the mortar.
Length mm 3 soakers 1000 4 and 5 flashings and pitched 1500 valley gutters 3b gutters box tapered and parapet bs en12588 maximum length overall girth code no.
Mortar should not bridge the welt detail.
This autocad detail can be used in your roof design cad drawings.
Pieces of lead for the following applications.
Also pitched valley gutter linings bs en12588 uses maximum code no.
Simple parapet gutter at corpus christi college lead linings are commonly found in the valleys between pitched roofs and behind masonry parapets.
Between drips mm max.
Parapet and tapered gutters our basic fitting guides are designed to assist installing rolled lead sheet in a range of roofing applications including flashings valleys gutters and flat roofing.