Ensure ice and water protector has been installed along the valley first.
How to lead a roof valley.
How to repair a lead valley.
Step 1 find the cause.
Starting at the bottom of the valley dress the lead neatly onto the valley boards and over the tilting fillets.
Table 11 gives the minimum recommended valley widths for different roof pitches and plan areas.
Then starting at the base of the.
Step 2 remove the shingles.
This method of lead valley repair is proven to not only be fast and safe wit.
The most common open width for a traditional valley is 125mm and this is generally satisfactory for normal domestic roofs.
Many roof valley leaks are caused by roofing nails that have been poorly.
Lead lined valleys the main elements that keep the water out are the upstands and welts at each side of the valley.
To secure the roof valley flashing nail it down carefully.
To make matters worse the lead has been cut by what i presume was the disc cutter as tiles were cut in situ.
It also has the added benefit of stiffening the lead which makes carrying it up the roof a lot easier.
Step 4 replace the shingles.
Bend a welt into the lead 25mm each side.
This acts as a last line of defence for water penetration.
Find the place where that leak is coming from.
Step 3 lay the flashing.
This video shows the traditional and best way to repair a lead valley on a roof.