How to remove the pipe through the roof - the step-by-step actions of the
Given the basic rules for the installation of the chimney system, the outlet pipe installed on the roof should be as close as possible to the junction of the two roof slopes. Directly on the "skate" the output can not be mounted, because this beam is a load-bearing roof structure and interference is unacceptable in terms of strength. But the height of the pipe can be any, the main thing - at 50 cm above the upper line of the arch.
In order for the chimney pipe installed on the roof of the house to serve for a long time and not spoil the general view of the house, it is necessary to take the following steps:
- to correctly determine the outlet of the pipe through the roof;
- to conduct the preparation of the roof frame;
- make a hole in the roof of the desired diameter;
- install the pipe;
- to insulate the outlet of the chimney from the roof of the roof.
About the definition of a place for the exit of the pipe from the roof, we have already talked about, so in order to figure out the following steps.
Preparation of the roof frame
Without disrupting the structure of the roof frame, this is indispensable. Step by step we perform the following actions:
- from one closest to the exit point of rafter legs, at a pipe diameter of plus 50cm, we install one more, parallel to the original, rafter leg.
- with the help of a plumb project the truss beam to the attic ceiling, and having measured one and a half meter from the plumb bob, determine the place where the center of the pipe will be;
- from the central point we retreat a distance equal to the radius of the chimney plus 25 cm, and at this point we set the upper beam perpendicular to the roof covering;
- is also to locate the lower beam
The roof box, installed from additional rafters, must be larger than the diameter of the chimney by 50 cm. In accordance with the norms of the Fire Safety Rules, the direct connection of the chimney to the roof is strictly prohibited.
Drilling a hole in the roof
After installing the box you need to make a hole in it, to pass the pipe through the roof of the roof. For this, through the four corners we drill through holes along the perimeter of the installed beams. Next, determine the exit limits from the top side of the roof on a square of drilled holes. Now you can open the roof, in order to remove part of it. This operation can be carried out in two ways:
- First - using a grinder or jigsaw to cut the inner perimeter of the box;
- The second - to conduct cuts along the diagonal.
The choice of how to remove the roof depends on the material to be cut.
Install the pipe on the roof
After cutting the roofing material, we turn to the installation of the chimney:
- bend outside the outer layer of the roof, and the insulating material - inside the box, and fix it to the beams;
- we insert a chimney from the attic side into the hole obtained and fix it to the "hoe";
- on the surface of the pipe impose a heat-insulating layer of material and fix the screws to the clamps;
- from the attic side the box is covered with a sheet of asbestos or metal and we fill it with a non-combustible insulation, for example, expanded clay.
Sealing
In order to seal the abutment of the pipe to the roof, use the already assembled kit to carry out this work. On the outer part of the chimney is put on a hood, which is called an "apron", and fixed to the roof by self-tapping screws. For chimneys of round and square cross section, the shape of the "apron" is also different. The joint of the roof to the pipe is sealed with a heat-resistant sealant.
