When the lead rests directly onto sawn timber on a steeply pitched roof and non resinous timber has been used underlay may not be necessary.
Roof lead flashing details.
Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.
The soft aluminum base conforms to most metal roof panels.
Copper flashing is locked into this edge and extends at least 8 up the wall.
Master flow lead roof flashing used as boot flashings around pipes extending through roof.
Because of their versatility.
Cover flashings are used where a felt or similar roof covering turns up against a wall.
Laps between pieces should not be less than 100mm.
One common method is to lay the edge metal under the eaves membrane and over the rake.
Fixing of lead sheet flashings fixings to abutment walls 29 soakers and step flashings step and cover flashings and secret gutters 30 cover flashings 31 apron flashings 32 chimney flashings 33 pitched valleys 34 ridges and hips 35 mitred hip and valley soakers 36 parapet and tapered gutters 36 drips and rolls for gutters 37.
Code 4 lead sheet is normally used for this work and it is important that the length of each piece of flashing does not exceed 1 5m.
The temperature of lead on a roof varies constantly.
On a low pitch roof where the lead isn t free to move it is more likely to buckle on expansion or stretch as it contracts.
Often seen on the front and back of a chimney abutting brickwork on flat roofs or where a roof meets the brickwork of a house or outbuilding.
This adjustable rubber pipe flashing for metal roofing this adjustable rubber pipe flashing for metal roofing accommodates roof penetrations from 1 4 in.
Up to 5 3 4 in.
Flashing is installed to surround roof features such as vents chimneys and skylights.
Details roofing wrb flashing two ways to flash roof edges protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
This flashing provides protection for pipes cables conduits and wires.
The flashing of the head of a batten seam roof at a wall is shown in this detail.
The top of the roof pan is formed into a bread pan whose upper edge is just above the finished batten.
