An additional break in the roof above the pipe

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One of the options for a homemade design of a roof junction unit to a rectangular brick chimney. Such a "kit" is easy to make yourself from sheet galvanized metal

It should be noted that a chimney pipe passing through the roof directly on the ridge line of the roof is the easiest to seal. With this arrangement, water during rain, as well as snow drifts in winter, do not have the opportunity to accumulate above the back wall of the pipe, which minimizes the risk of roof leakage in this, perhaps, the most vulnerable place of the junction.

It will not be difficult to arrange a reliable connection of the roofing material to the chimney, which is located in close proximity to the ridge line, that is, almost immediately behind the ridge element. There is also a very small space above the pipe, which does not allow snow and water to accumulate.

- a valley - will not allow rain or melt water to accumulate in this space - it will redirect its flows to the sides

But it is much more difficult to perform high-quality sealing of a chimney located in the middle or lower part of the roof slope. In this case, the waterproofing must be especially reliable. Therefore, quite often, and especially, for example, when the roof is covered with soft bitumen roofing, it is necessary to arrange an france mobile database pitched structure - as shown in the illustration above. Such a special break in the roof will distribute water flows, directing them along the side walls of the pipe. Such protective extensions to the pipe are usually called valleys.

Perhaps the most unfortunate location of the pipe is on the valley line. It is advisable, even at the stage of designing the chimney and ventilation channels and the roof structure, not to allow the detailed passage of the pipe through the roof

And, of course, the most difficult thing is to qualitatively arrange the abutment around the chimney, which falls on the middle or lower part of the valley. In this case, the pipe will be in the path of clearly directed water flows, which during rain or melting snow will flow into the gutter of the joint of the slopes. In this case, it is extremely important to reliably seal not only the back side of the pipe, but also its side lines. Therefore, even at the design stage, it is necessary to try very hard to avoid such a location of the pipe.

Now, to answer the most popular questions that arise during the installation of this roof unit, it is necessary to consider several options for sealing the pipe passages through the roof.