Ventilation fungus on the roof - purpose, installation technique and expert advice

When choosing a roof covering, it is necessary to consider how the preservation of air circulation inside the building will be organized. This will help the ventilation fungus, which acts as an aerator.

Ventilation fungus - what is it

Depending on the type of tile, the ventilation fungus on the roof can be ceramic or cement plaster. It is installed together with fireplaces made of universal polypropylene material, resistant to UV radiation. The main function that it performs is to remove excess steam and unpleasant odors that occur inside the building in enclosed spaces.

Structure and material of manufacture

The ventilation fungus is similar to the forest plant after which it is named. It is installed depending on the material of manufacture of the roof:

1. On a metal tile there can be an insulated or non-insulated type, in which a condensate drain is equipped. Most often it is found in high quality polypropylene and is designed to cover any coating;
2. On a tiled roof, it is recommended to install ceramic or cement mushrooms, but it is acceptable to use an alternative made of polypropylene. This would be a good option due to the durability of the material;
3. On flat roofs with PVC membrane and flat sheets, it is possible to install special types of ventilation units equipped with protective coatings. And the best choice will be polypropylene, which copes well with atmospheric factors that will constantly affect it.

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All these points must be taken into account when choosing a fungus on the ventilation pipe, so that the entire installation is efficient and does its job well.

Dimensions of the ventilation fungus

To choose the right fixture, taking into account valves and caps, you need to focus on the inner diameter.The most popular size is 110mm, where the outer diameter varies and can be from 125mm to 160mm.

The height of the entire structure can reach 400 mm to 700 mm. The difference between the dimensions is best calculated taking into account all the additional materials that will be used for insulation.

Varieties of ventilation fungus

Properly selected and installed fungus on the roof will help direct the ventilation flow in the right position. Now there are several varieties of this system:

• Zephyr;
• Bora;
• Breeze;
• Sir.

Each of them must be installed according to the instructions with all additional materials. Because alone it won't work as it should. To do this, it is necessary to isolate the ventilation pipe well, install a grate in a ventilated room and create a way to bring outside air into the room. It is important to comply with all installation criteria.

The position of the ventilation fungus in the roof

Installation must be carried out properly. This will help direct the air of the ventilation fungi in the right direction:

• the angle of inclination on the roof of a metal tile should be at least 15 ° and not more than 45 °;
• if it is covered with tin and without observing the trapezoidal shape, a mount with a slope of 5 ° to 45 ° is acceptable;
• on a flat roof can be placed with an angle of inclination from 0° to 50°.

To avoid the accumulation of condensate under the roof, care must be taken to ensure that ventilation is not installed at the seam where two sheets of roofing meet.

Tools and materials for installation

The ventilation fungus must be installed based on the coating materials. For metal tiles and other materials you will need:

• a hacksaw for metal (can be replaced with an electric jigsaw, if it is possible to connect it to the mains through a long extension cord);
• a screwdriver with the appropriate bits to tighten the bolts securing the system to the roof;
• mounting scissors;
• chisels.

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With these tools, it is easy to cut the desired segment on the material without damaging it. Additionally, when installing a ventilation fungus, you will need a waterproof sealant, deflectors, flange connections and gaskets that are inserted into the connection channels and insulated.

Optional components

In order for everything to work as it should, it is necessary to consider installing a ventilation fungus with a fan powered by electricity. In this case, additional elements will be needed for the design with valves that control the flow of air distributed over the blades under various weather conditions. Such an installation can be placed on metal tiles and under corrugated board, and then adjust the speed of the device directly from home.

Preparing for installation

It is necessary to free up space under the roof and calculate the dimensions of the cutouts, taking into account the connection to the premises. From the outside, you need to choose a place where installation on the roof will be carried out, clean it and degrease it with tools from the building. And then prepare the labels. For a typical ventilation fungus with a diameter of 110 mm, it is enough to make a standard move under the material.

Changes should be made only on the slopes of the roof, making calculations with all the errors. And here one should not be afraid of small deviations up to 5 mm, they can be leveled with the help of gaskets and a sealant.Before proceeding with the next steps, you need to determine the installation schemes.

Installation configurations

It is necessary to install a ventilation fungus on the roof under the metal tile so that the sockets work with maximum efficiency. And here it will turn out to use one of the types of installation configuration:

• Spot. We integrate the mushroom with the area on the ramp (or ridge), collecting pipes from all channels and forming networks of air circulation under the niche at the entrance. Thanks to this, one aerator will perform the function over the entire area. And this installation will be ideal for a small house where you need to minimize the number of cold bridges;
• Group. It is used when installing several mushrooms, each of which is designed to remove condensate from a specific room. On the roof, they are located at a distance from each other to create conditions for working with intense air flow. This installation requires more time and consumables and is intended for houses with a good area.

Both of these methods are good in their own way. And they must be applied taking into account the size of the premises and their features.

Installing a ventilation fungus step by step

To do everything without mistakes, follow this guide with a photo. It will help to technically correctly install the ventilation fungus on the roof under the metal tile:

1. When the mounting points are marked and the surface is clean, make the mounting holes. To do this, we use a dense template of the desired format. This will avoid errors;
2. If the network or system elements pass directly under the installation site, we use adapters and corners. They will allow you to shift everything correctly and not damage the wires;
3. On a roof with a metal base, after cutting a hole, we cover the edges with a special paint against corrosion. When the coating dries, we install an o-ring for the mushroom in the niche;
4. The support bracket is installed with silicone to prevent leakage and fastened with screws. If possible, we use electrical equipment to pull them together as tightly as possible;
5. We mount the fungus in the ring with a flange and fix it with tools;
6. On the back side of the pipe, we connect vertically, and close the connectors with special gaskets and fasten everything on the beam with additional materials.

To strengthen the installation, we use protective covers, which can be purchased as an addition to the roofing and separately for ventilation mushrooms. With these heat-insulating elements we cover the area between the pipe and any roof covering. In order for the liner to work properly, we choose one that consists of a waterproof bituminous construction.

Properly functioning ventilation in the home will help maintain sanitary conditions in the home. It will eliminate the risk of damage to building structures and prevent faults in the roof. If the house has an attic, the fungus will become a protector from the effects of precipitation penetrating through the roof and will help get rid of excess vaporization.

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