In order to protect the external walls of the building from rain and to ensure the flow of water from the territory, drainage systems are installed on structures with a pitched roof. Today, there are several options for systems that differ in the material at the base of the design.
Material selection
The shower system made of galvanized steel was familiar to Soviet people, but even today you can find better products, but galvanizing is still popular. Such drainage from the roof also has some advantages, which are expressed in the use of fairly strong steel with a thickness of 1 to 2 mm. Designs have a low cost, and you can even make them yourself, while they can have completely different shapes. There are also disadvantages, they are in the low attractiveness of galvanizing, as well as the susceptibility of pipes to corrosion already in the third year. The product starts to rust from the end. That is why the service life of such structures is only 15-30 years, if they are periodically painted with oil paints. The geometry is not perfect, and the joints do not always fit tightly.
On sale there is a drain from the roof of galvanized steel, the thickness of which is from 0.6 to 0.7 mm. Top products are coated with a polymer composition, and their shape will be round or rectangular. It is noteworthy that you can choose the color for the exterior and decoration materials of the house, which sometimes exactly match the metal tile. This storm storm looks neat, but the manufacturing accuracy is not high. The service life sometimes reaches 50 years, but minimally such products last about 25 years.
Gutters are made of aluminum, copper and steel coated in the form of zinc and titanium. Today they are exotic. Depending on the design, plastic systems can be connected using glue or rubber seals. Pipes can have a different configuration, but the color palette is not so extensive. The average service life reaches 30 years. The advantages include ease of installation, high tightness among all systems, low weight, moderate cost and attractive appearance. But there are also disadvantages, they are expressed in the fact that plastic does not tolerate extreme frosts, it is more fragile compared to steel and is easily damaged when snow melts.
Mounting options for horizontal gutters of the drainage system
The drainage system from the roof has horizontal gutters that can be installed in one of two ways, the first involves the use of metal hooks, while the second - brackets. Metal hooks are installed on the base of the roof, they are strengthened until the roof covering is laid. This option can be called reliable, but it is used for heavy gutters in regions where snow load is high.
At the base, the hooks are started at different distances to provide the desired slope of the gutter. The locations of the elements must be determined in advance. Equipping a drain from the roof, you may prefer the second option for attaching the gutters, in which brackets are used that are attached to the end board or rafters. This solution is not so reliable, because the screws can be pulled out if you make some effort. Such hooks are used for plastic systems, but they themselves are made of polymer. Holder models are designed for mounting on strictly vertical surfaces. Installation of the windshield is convenient, simple, carried out at any time, even when the roof is ready and the lower overhangs are hemmed. The slope of the gutter is provided by mounting the holders at different heights. You can use this technology when there is no danger of snow falling from the roof.
Mounting the knee and horizontal elements
Roof drainage systems require knees and horizontal elements. Sometimes funnels are installed first, in other cases everything happens the other way around - gutters are mounted. At the first stage, you need to markup, following from the funnel. The length of the gutters is most often equal to three or four meters, but the extreme elements have to be cut. If we are talking about plastic, then you can use a hacksaw, in the case of metal, good scissors for metal should be preferred. Do not use a grinder, as in the future this will cause corrosion.
The gutter line ends with a plug. You can connect the gutters to each other with glue, a sealant or sealing silicone. The funnel is installed taking into account the temperature expansion, for this it is necessary to leave a gap for deformation. When a water drainage from the roof is arranged, it is necessary to ensure the transition to a vertical drain from the funnel. For this, a straight section is mounted. The step from the gutter and lower knee to the wall is determined by the supplier.
Rules for installing the drain and drainpipes
Each master will be able to install gutters, usually they have a length of 4 m and are easily joined. When the removal from the house is carried out superficially, in the lower part you need to install a knee with a removal at an angle of 45 °.
If the territory has an underground storm sewer system, then the drain must go into a storm well. Most of this option corresponds to round plastic pipes.
Installation Recommendations
Drainage from the roof of the house is necessary to extend the life of the building. This system provides for the presence of pipes that should be located at a certain distance from the wall. The minimum value is 5 cm. If the pipe is placed closely, the facade will be constantly wet. The drain must have a slope. It is necessary to make it in the direction of the funnels, this will eliminate the accumulation of liquid and transfusion of it over the edges of the gutters. Mounting points and joints must be well sealed. Sometimes a cold welding method is used for this.
What kind of sealing to use
When a drainage system is installed from the roof with your own hands, it is important to choose the right technology for sealing joints, each option has its negative and positive sides. For example, rubber seals are able to withstand mechanical stress and perfectly protect the system from leakage. But during operation, they will be exposed to the negative effects of low and high temperatures. In this case, normal operation can be expected only if the thermometer column is above zero and does not rise to limit values.
Adhesive bonding provides complete and reliable sealing, but it will no longer be possible to dismantle such a structure. The rainwater drainage system from the roof can be sealed by cold welding, which provides the most reliable fastening and a high degree of protection. But if the drainage elements change their linear dimensions, then the system will become covered with cracks.
The nuances of the work
When plastic pipes are used, the distance between them should be 60 cm. When using combined or metal elements, fastening is done in increments of 30 cm. Then you can fix the funnels by laying the gutters in the holder. Drainage of rainwater from the roof involves work in some sequence. Thus, the next step is to fasten the joints. These components should be located at the junction of the two gutters.
Conclusion
When connecting the gutters, you must remember that their ends should not be in contact. It is important to leave a temperature gap. This is especially true for the technology that involves the use of metal elements. If the facade has protruding parts, then corners should be attached to it, which are connectors of a special shape. At the final stage, drain pipes are installed.