How To Build A Lead Roof Valley

This recommendation includes iko s premium shingles.

How to build a lead roof valley.

450mm wide code 4 lead should be used turned back at the edges. Check the entire roof valley carefully to locate the source of these problems. The overlaps should be 150mm minimum and the only fixings should be a few copper nails under the overlaps. To replace a 4metre long zinc or swept valley on a slated or tiled roof with a nice new lead one.

Some grp valleys are sufficiently robust to enable them to be laid directly over the rafters rather than being supported on valley boards. A roof valley is basically a gutter set between two meeting pitched roofs. We will look here at the basic installation of an open lead lined roof valley. Roof valleys are a frequent source of leaks in older houses.

If you begin with accurate as built measurements and use a construction calculator to do the math you can cut all of the rafters for most roofs on the ground in just one shot. This should be laid in two 1500mm lengths with a third length at the top. The three methods to shingle a roof valley. But it doesn t have to be.

Preformed grp valleys in many ways the roof construction for a pre formed grp valley is the same as that for a lead lined valley. Framing a complex roof is one of the trickiest parts of home building. It is therefore worth asking the valley manufacturer for guidance on this. There are occasions when a roof valley is in good condition but the cement holding the tiles in place has washed out or crumbled.

Iko recommends that you install architectural shingles with the open valley method for the best roof performance. The roofing nails are fine so long as the lead of the roof valley is intact but once it starts to crack or fracture due to water pressure corrosion or other damage the nail provides a space for water to run into the home. This roof valley is a perfect example.