How to install roof fans yourself?

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Previously, a dormer window was used as ventilation on the roof of residential or public buildings. This is a small window that adds natural light to the attic and ventilates the entire room in the attic and lower floors. In our article we will talk about an advanced alternative to this design - a roof fan, which can be installed literally without special knowledge and skills. The main thing is the correct sequence of actions. In just 2 minutes you will receive a universal “tablet” for installation work on the roof.

What you need to know before installing a roof fan

If you are just thinking about such a system, we will now tell you which fan will definitely suit you.

So, in a store, the seller can tell you about several ventilation options, both general and specialized. For example:

• heat-resistant - the fan is installed on the roof to remove smoke in case of fire;
• explosion-resistant – get rid of explosive gases in the room.

The simplest systems, if you do not require the format presented above, ensure the absence of condensation throughout the house and supply a constant flow of fresh air.Constant ventilation gets rid of harmful gases, odors from the kitchen, bathroom and other foreign mixtures that definitely should not be in a private home.

An important function of ventilation is that it works more efficiently than ever during a fire - most of the carbon monoxide, under the influence of “blowing” by propellers, is removed outside the fire area. Believe me, in difficult times this can save a life.

How the roof fan mounting system works

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The main details in this system:

• frame;
• electric motor;
• shaft with blades;
• sub-frame;
• mounting bowl;
• pallet;
• protective visor.

The working part is installed on the engine shaft, without any drive. Therefore, the system moves only in the horizontal plane. Check valves prevent air from getting back out of the apartment.

Axial fans have a propeller that leads the flow outward along its axis. Radial models are different: first, air enters the housing, then the motor increases the speed of the flow, and only then pushes it out through all the tubes outside the room.

Installing a fan on the roof - the correct procedure

Before starting work, inspect the device: we need to understand the further scheme for installing the fan on the roof. Pay attention to the appearance, dimensions, and angle of inclination of the blades of the mechanism.

Units for installing a roof fan on the roof

If your visor is made of delicate materials, then it is worth developing an individual project for installation. This is because the characteristics of the coating differ and it is difficult to choose the right scheme offhand. Further actions are performed in the same order as for the others.

For a hardtop, you can start installing the roof fan on the glass. This “bowl” is made of galvanized steel.If your house already has ventilation outlets in brick or concrete, use them as a place for a glass. Believe me, you will save a lot of time.

If there are none, then install the glass under the roof fan vertically directly onto the base of the coating. The height of the glass is 40 cm, and the diameter depends on your needs.

After fastening, we insert a tray that will not let debris into the system. It is installed with bolts or self-tapping screws. And we mount the fan itself inside.

Fastening structures

Before installing the motor itself, check whether there are anchors inside the mounting cup - the diameter must fully correspond to the mounts on the electric motor.

Next, the machine itself is lifted onto the roof using a manipulator or crane. If you don’t have a nearby crane, or don’t want to spend money, assemble a simple construction winch. Before immersing the fan in the glass, cover the latter with a rubber gasket. Next, insert the anchor bolts into the places marked on the bowl.

There will definitely be a gap between the components of the structure. To remove it, mix the cement mortar and cover the surface with a thick layer. You can also use sealant if the fan is installed on a glass that has been standing for a long time.

At the site of the breakdown in the roof, we seal all the holes with thermal insulation elements. As they say, so as not to blow away. Remember: all the work will be done correctly only if you do not rush and do everything wisely!

When all installation work is completed, you can connect the device to an outlet and observe the result.