Panel on wooden wall without full air gap

[Boan]

hi

I am going to build a shed, and when it comes to the paneling (standing lap), our residential house is built so that it is horizontal 45 on the outside with insulation, and then wind barrier. The laps are attached directly to this, i.e., without any cross batten. Thus, the inner boards are directly against the wind barrier and the air gap that exists is where the laps are attached.

This saves about 28mm in wall thickness, and we haven't noticed any problems.

But this is not a construction that I find anywhere in guides, etc., today.

What do you think, can it work in a heated shed? It saves space and is simple.

The idea is to use the following in the wall: 120 standing, with plastic and plywood on the inside, then horizontal 45 on the outside with insulation, wind barrier, and then the lap panel directly on that.

Or am I making a mistake?

 

[sblixten]

Is it space, time, or money you want to save?
None of them are likely to save much if you look at the whole picture.
To me, it feels penny wise foolish unless there's a very good reason.
Then again, the fact that it probably works is another thing, because I think it does unless you have very high moisture pressure from the floor and minimal ventilation.

 

[Boan]

There will of course be a diffspärr in the storage. But that creates more space inside, as the external dimensions are limiting... I mean, we have had it like that in our house for 30 years now. But I don't see this type anywhere today. That's why I'm wondering a bit...

 

[Henri]

When replacing the panel on our facade from 1972, the carpenters refused to do the work unless they could create a ventilation gap. Such did not exist before. The strip that creates the ventilation is significantly thinner than 28 mm.

 

[bomm]

There are thinner strips available to purchase that are specifically sold as air strips and for straightening/adjusting in various dimensions. My local lumberyard has 8*45, 12*45, 16*45, 21*45, 28*45, and 36*45mm

 

[Ulric]

Moisture must escape somewhere. If you paint the panel with paint that is not diffusion-tight, such as ordinary red paint, you don't need an air gap.

 

[Boan]

On our existing setup, there is ventilation between the panel boards where the covers are located. But if it's better, I might put on a thin batten, 8mm sounded reasonable. As a spacer...