How to build a drainage system from the roof

In order to protect the exterior walls of the building from rain and to ensure the flow of water from the territory, on constructions with a pitched roof, drainage lines are arranged. Today there are several versions of systems that differ material in the basis of the design.

Material selection

Usual for the Soviet man was a storm system of galvanized steel, but even today you can find better products, but galvanizing is still popular. Such a drainage system from the roof also has some advantages, which are expressed in the use of fairly solid steel with a thickness of 1 to 2 mm. Constructions are of low cost, and they can be made even independently, and they can have completely different shapes. There are also disadvantages, they consist in low attractiveness of galvanizing, as well as susceptibility to corrosion pipes for the third year. Begins to rust the product from the butt. That is why the service life of such structures is only 15-30 years, if they are periodically painted with oil paints. Geometry is not ideal, and joints do not always fit tightly.

On sale there is a drainage from a roof from the zinced steel, which thickness makes from 0,6 to 0,7 mm. At the top of the product are coated with a polymer composition, and their shape will be round or rectangular. It is noteworthy that you can choose a color for the exterior and finishing materials of the house, which sometimes correspond exactly to the metal tile. It looks such a livnevka neatly, but the accuracy of manufacturing is not high. The service life sometimes reaches 50 years, but at least such products serve approximately 25 years.

Gutters are made of aluminum, copper and steel with a coating in the form of zinc and titanium. Today they are exotic. Depending on the design, plastic systems can be connected with glue or rubber seals. Pipes can have different configurations, but the color palette is not so extensive. The average lifetime is 30 years. The advantages are simple 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 than steel and easily damaged when snow falls.

Variants of fixing horizontal gutters of the drainage system

The drainage from the roof has horizontal grooves in the composition, which can be installed in one of two ways, the first involves the use of metal hooks, while the second involves 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 troughs in regions where the snow load is high.

On the base hooks are set up at different distances to ensure the desired slope of the trough. The location of the elements must be determined in advance. By arranging the drainage from the roof, you may prefer a second option for attaching the gutters, which uses brackets attached to the endboard 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. The holder models are designed for mounting on strictly vertical surfaces. The installation of the frontal board is convenient, simple, carried out at any time, even when the roof is already ready and the lower overhangs are sewn. The slope of the trough is ensured by mounting the holders at different heights. Use this technology is possible when there is no danger of snow falling from the roof.

Assembly of the elbow and horizontal elements

The drainage systems from the roof assume the presence of knees and horizontal elements. Sometimes the funnels are the first to be installed, in other cases everything happens the other way around - gutters are mounted. At the first stage, you need to make the 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 off. If we are talking about plastic, then you can use a hacksaw, in the case of metal, you should prefer a good scissors for metal. Do not use the Bulgarian, as in the future it will cause corrosion.

The gutters line ends with a stub. You can join the chutes together with glue, sealant or sealing silicone. The funnel is installed taking into account the temperature expansions, for this it is necessary to leave a gap for deformation. When the drainage of water from the roof is arranged, it is necessary to ensure a transition to a vertical drain from the funnel. For this, a straight section is mounted. Step from the drain and the lower knee to the wall is determined by the supplier.

Rules for the installation of drains and downpipes

Each master will be able to install gutters, they usually have a length of 4 m and are easily joined. When the removal from the house is carried out superficially, a knee with an offset at an angle of 45 ° must be placed in the lower part.

If the territory has an underground storm drainage system, the drainage system must go into the stormwater well. The round plastic pipes correspond most to this variant.

Mounting 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, which must be located at some distance from the wall. The minimum value is 5 cm. If the pipe will be located closely, the facade will be constantly wet. The gully must necessarily have a slope. Make it necessary to the side of funnels, this eliminates the accumulation of liquid and its transfusion through the edges of the troughs. The fixing points and joints must be well sealed. Sometimes a cold welding method is used for this.

Which seal to use

When installing a drainage system 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 transfer mechanical influences and perfectly protect the system from leaks. But in the process of operation they will be exposed to 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 the limit values.

The glued joint provides a 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 ensures the maximum secure attachment and a high degree of protection. But if the drainage elements change their linear dimensions, the system will crack.

Nuances of works

When plastic pipes are used, the distance between them should be 60 cm. When using combined or metallic elements, the fixing is done in 30 cm increments. Further, fixing funnels can be carried out by laying the gutters in the holder. The drainage of rainwater from the roof involves carrying out the work in some sequence. Thus, the next step will be the fastening of the connections. These components should be located at the junction of the two gutters.

Conclusion

Connecting the gutters, you must remember that their butt-end should not touch. 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 it should be attached to the corners, which are connectors of a special shape. At the final stage, drain pipes are installed.