Roofing: Installation Guide to Lead Valley


common source of leaks in the roof valleys of old houses. Installation procedures vary depending on the type of roof and the materials used. Let’s look at the basic installation roof open lead-lined valley.

The roof valley is basically defined by a pitched roof gutters two sessions. Depending on serve in the roof area of ​​the valley to the exit point to the large amount of water, so proceed with the installation special care. If the roof has been leaking for a while, or if there are signs of rot, you should begin to exchange the valley boards. Sheet music is not self-supporting and place the treated roofing sheet sufficient strength to hold the big man. sufficient width to accommodate (Most roofing big boys!) Fit the lead plates plus 100 mm on each side. It gives you something to put on the roof batons to.

The top of the valley boards are on the same level as the top of the roof rafters. If you lay the boards on top of the rafters directly cause the tiles to kick in and limit the water run off. You have to cut the valley boards to fit between the rafters. Support the valley boards rivets or the connecting elements. The valley must finish on a flat plane of the eaves. Do not kick it up higher than the lower rafters. If so, then you have to cut the fascia board or set the channel to match. It’s a good idea to fit a dump fillets on both sides of the valley. This sloping strip of wood that runs along the valley must be at least 150 mm from the center of the valley. You must sit not larger than the thinnest end of the roof batons nearest to the center of the valley.

It is common practice to fit on a sheet of roofing background of the entire length of the valley. The adjacent roof will rest on the top of this page coasters. We recommend that you use the new advanced synthetic underlay material. The older bitumen-based roofing felt fine in normal situations, but not for the valleys. Over time, the bitumen will bond the lead on the boards and limit the thermal motion. You must ensure sufficient degree of lead buy / Valley code applications. 1.80mm and 2.24mm must be thick in this. If you are unsure, ask your dealer roofing of the right quality. The wire should be cut into sections of not more than 1.5 meters long to provide sufficient thermal motion. Bend the lead of Rama 25mm on each side. This last line of defense is a kind of water ingress. It also has the advantage of reinforcing the leadership that facilitates carrier to the roof of a lot easier.

from the bottom of the valley, dress neatly onto the lead in the valley tables and tilting fillet. In the bottom of the leadership to do the right drainage drains possible. Fix the flashing two rows of nails at the very top. Copper or stainless steel nails. Never use aluminum or galvanized nails, which can only react to the lead and rust. We recommend that you use the least amount of recording is possible to keep the leading position. If more than fix lead plates that will eventually split the thermal motion. So do not put on the site. If successful, dressed for the first card can be moved at a later panel on the roof. Plates overlap at least 150 mm. The lower roof valleys, you need to increase the circle. Where the valley ends of the spine, you need to dress for the driver, so you can sit nicely under the ridge tiles. You are now ready to start fixing the sticks and laying the roof tiles. The most important point is to keep the tab down to 1.5 meters in length you remember, and no more than fix. If, following the procedure and take care of dressing will be long-term maintenance-free valley.


Source by Simon Cowham

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