In order for the water drainage system from the roof of the house to work effectively, it is necessary to correctly calculate it and install it correctly. It is important to take into account such nuances as the slope of the gutter, the choice of its section, etc.
Roof drainage system is a necessary element of any building. Without the effective operation of this system, it is impossible to ensure the reliability of the roof, foundation and walls of the building, since all these elements will rapidly collapse under the influence of moisture.
Consider how the installation of a gutter is carried out.
First you need to do some simple calculations. roof gutters, which will allow you to choose the correct section of the gutter and pipe. It is necessary to calculate the area of water disposal.To do this, the length of the horizontal projection of the width of the roof is multiplied by the length of the slope. Then, the sections of the gutter and pipes are selected in accordance with the table.
catchment area
Gutter section
Pipe section
When installing one downpipe
Pipe cross section when installing two downpipes
sq. meters
mm
mm
mm
60-100
115
87
—
80-130
125
110
—
120-200
150
—
87
160-220
150
—
110
Also, it should be taken into account that when installing one funnel, the maximum length of the gutter should not exceed 10 meters.
Mounting brackets for installing the gutter. This operation is one of the most important, since such an important parameter as the slope of the drain depends on how correctly the hooks are installed. As a rule, it is recommended to make a horizontal slope of 2-3 mm per linear meter of the gutter. Fastening hooks begins with the installation of the first, located at the highest point. Then the last hook is fixed with the appropriate indent in height. For example, if the length of the gutter is 10 meters, then the last bracket must be reinforced below the first by 20-30 mm. Then, a string is stretched between the installed brackets, along which the remaining hooks are exposed.
Advice! It is extremely important to set the slope correctly, otherwise the system will not work effectively. If the slope is too gentle, then the water will stagnate in the gutter. And if the slope is too significant, the funnels will not cope with the incoming volume of water.
The pitch of the hooks depends on what material was chosen for the gutter. If it is plastic, then the step will be 0.5-0.6 meters; for metal gutters, the distance between adjacent hooks can be 0.75-1.5 meters.
Now you need to install the funnels drainage from the roof. To do this, make a hole in the gutter with a hacksaw.If the gutter is metal, then the edges of the metal are bent with pliers in a downward direction. Then a funnel is brought under the gutter so that its front fold catches on the edge of the gutter. After that, the funnel clamps are bent, leading them over the rear edge of the gutter.
When using plastic pipes, funnels are attached to the gutter using a special adhesive based on dichloroethane, which allows you to create bonds between the parts to be glued at the molecular level.
The next step is to install the plugs. A rubber seal is installed on the ends of the gutter, then a plug is applied. Gently upsetting the plug with a mallet, it is driven into place and strengthened with the help of a bend of the latch, which engages with the back of the gutter.
Advice! The plugs produced are universal, they can be installed both on the right and on the left side of the gutter.
Gutter installation. The chute is inserted into the bracket so that its front part goes beyond the edge of the hook. As a result, the edge of the hook is inside the curl of the gutter. Next, the chute is rotated ninety degrees to set it in place. It remains to fix the gutter with special plates.
The next step is to install the gutter connections. To do this, a rubber seal is installed in the coupling, from which the protective film must first be removed. Then the coupling is installed at the junction of the two gutters and fixed with a special lock.
When installing the gutter of a drainage system, one should not forget about such a physical phenomenon as thermal expansion. If you do not take this nuance into account, then the gutter can very soon deform or crack.
Advice! It should be remembered that when the air temperature changes by 10 degrees, the plastic pipe will change its size by 0.7 mm per linear meter. Considering that temperature differences in our latitudes are even more significant, and the length of the gutter reaches 10 meters or more, changes in linear size can be quite significant.
Universal gutter hook
To avoid deformation, special parts are used - compensators, which are installed at the joints of individual pipe sections.
Installation of external and internal corners. At the place where the gutter turns, special corner pieces are installed. They are connected to the gutter using couplings in the manner described above.
After installing the gutter, it is desirable to cover its upper part with a metal or plastic mesh. This will prevent debris from entering the chute.
conclusions
When installing a gutter, it is extremely important to take into account all the nuances of the technology. If any conditions are not met, the drainage system can very quickly become unusable.
Therefore, it is better to entrust this work to professionals, and if you want to do it yourself, you should carefully study the requirements of building codes for installing roof drainage systems.
Roof drainage system is a necessary element of any building. Without the effective operation of this system, it is impossible to ensure the reliability of the roof, foundation and walls of the building, since all these elements will rapidly collapse under the influence of moisture.