What will happen when attaching siding close to OSB without crate

This is one of the topics discussed. Do I need to make a ventilation gap under the siding on the OSB? Is it possible to skip the lathing and attach the siding directly to the slabs?

Screwing screws into a wood board is quick and easy. However, this is not worth doing. We will tell you what can lead to fixing siding directly on the OSB without lathing.

There are controversies on the forums. Someone claims that the ventilation gap is not needed under the siding. Some claim that in some cases it is needed, but in others it is not. The vent gap is the distance between the building wall and the siding. It is created using lathing. Additionally, it evens out the walls.

Much still depends on the quality of OSB boards. Fastening with self-tapping screws often leads to problems. The fasteners do not hold and the siding simply falls off over time.

You cannot nail siding directly to the slabs!

Let's imagine that winter has come, it's freezing outside. On the contrary, the house is warm. Inside the house, steam begins to pass through the walls and is deposited on the surface of the wall. Condensation appears and moisture appears on the walls of the house. Then a fungus with mold appears.

Moreover, when washing the siding with a hose, moisture accumulates and is absorbed into the material, which leads to its rotting.

If there is a crate, then there will be no such problem. The wall will always be dry.

By the way, using a thermal imager, you can see whether the OSB under the siding is rotting or not. Where the temperature is higher, there is a process of decay; in intact areas, the temperature is lower.

Most masters recommend that when sheathing the house with siding, fix wind protection (not vapor barrier) under it. Make the width of the ventilation gap 20 - 35 mm.

To prevent OSB from rotting under the siding, be sure to make a counterbeam. Fasten in increments of 40 to 60 cm. A small gap will allow moisture to escape. This works for both vinyl and metal siding.

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