Valley in the building: types, applications, tips
In this article you will learn:
- what a flagon;
- what are its variations;
- in some cases it is necessary to use one or the other kind.
valley - this is one of basic components of the roof, which is the interior angle at the point of contact krygi skates. One of the main features of the valley - a safe descent of rain and snow from the roof.
There are three types of the valley:
- Open. Water and snow on a roof valley drains / coming down on their own, and for waterproofing a valley use the same roofing material that lies on the entire roof.
- Locked. There flagon hidden under a layer of roofing material (tiles, profiled sheet).
- Intertwined. This subspecies closed valleys, wherein the roofing elements are intertwined, closing the valley from moisture.
What type of valley choose?
on the roofs with a steep slope It is commonly used closed or its subspecies - twisted valley. For proper waterproofing of roofing materials (tiles, sheet profmetalla) connected to each other by a joint, or weave.
The main disadvantage of woven valley - the need for additional waterproofing, which entails additional costs.
In the case of the open valley all the easier - no need for an additional layer of waterproofing, as rainfall themselves perfectly running down it down. For flat roofs choose the open valley.
Question: roof made of metalocherepitsy what valley I choose?
Usually in such cases, people choose the valley of galvanized steel, but the best choice would be a choice of trims made of galvanized steel with polymer coating on top.
polymer coating wins over conventional galvanizing, since the latter is deleted with in due course sheet water and snow, and the polymer is not afraid that determines their increased operational period.
Why erase the galvanized layer is dangerous?
The greatest danger - a metal corrosion: mark erased zinc layer on the roof valley enables rust iron, and you get a very vulnerable place on the roof, on which, moreover, is the largest water flow.