How To Lead A Roof Valley

Lead lined valleys the main elements that keep the water out are the upstands and welts at each side of the valley.

How to lead a roof valley.

Table 11 gives the minimum recommended valley widths for different roof pitches and plan areas. Only nail at the edges with only enough nails to. This acts as a last line of defence for water penetration. How to repair a lead valley.

The most common open width for a traditional valley is 125mm and this is generally satisfactory for normal domestic roofs. Then starting at the base of the. This video shows the traditional and best way to repair a lead valley on a roof. Starting at the bottom of the valley dress the lead neatly onto the valley boards and over the tilting fillets.

Step 1 find the cause. Ensure ice and water protector has been installed along the valley first. The width of the open valley is dependent upon the roof pitch and the volume of water expected to drain into the gutter. Step 4 replace the shingles.

To make matters worse the lead has been cut by what i presume was the disc cutter as tiles were cut in situ. Thin plywood linings are fitted over the valley boards to maintain a smooth finish under a lead lined valley. To secure the roof valley flashing nail it down carefully. Many roof valley leaks are caused by roofing nails that have been poorly.

Bend a welt into the lead 25mm each side. It also has the added benefit of stiffening the lead which makes carrying it up the roof a lot easier. Find the place where that leak is coming from.