Does Isover's spacer sleeve provide an air gap (facade board)?

[Nyfniken]

If such grooves exist in the panel, then it will probably ventilate, they are probably not made for fun, but there is a purpose with them

But aren't the grooves in the panel there to prevent the boards from warping?

 

[xdigger]

Haha, now you change your mind when you realized you were wrong.
and of course, you don't let air in at the corners

No, I didn't, but you're talking about air gaps, it ventilates everywhere, you have gaps everywhere, the largest gaps will be inside the corners (about 50mm). You assume it will be airtight which is not the case. The total area of the gaps makes it ventilate sufficiently.

 

[xdigger]

But the grooves in the panel are there to prevent the boards from warping, right?

Yep!

 

[hul]

No, I didn't do that, but you're talking about air gaps, it ventilates everywhere, you have gaps everywhere, the biggest gaps are inside the corners (about 50mm). You assume it becomes airtight, which is not the case. The total area of the gaps ensures sufficient ventilation.

Indeed, you get air gaps that the air never reaches because you only mount a horizontal batten. Gaps and cracks are not enough. There should be a wide air gap of at least 25mm behind the entire façade board. There is plenty of research showing this, and it is taught at all technical universities; I have a master's degree in construction from Chalmers University, by the way.

Can you refer to any detail where air is taken in through the corner boards? I would like to see this.

 

[hul]

Yep!

In addition, I have to ask one more thing.
There are special hat profiles for mounting sheet material, etc. on the facade.

These hat profiles are always heavily perforated to create an airflow behind the facade, why are they like that if they are not needed according to you?
YOU must understand that your construction is a risk construction, and you will get a very small air gap that will basically function as a single-stage sealed facade, and we all know how good they are.

 

[Kallebo]

I attached 12 mm battens vertically on the board before I attached 28 mm nail battens. Not much extra work and it feels like it's ventilating well.

Should it be considered a gap width of 12 or 40 mm?

 

[RoBo]

Isn't there something wrong with the facade if such intense drying as hul wants is required?

 

[hul]

I put 12 mm battens vertically on the outside of the board before I put 28 mm nail battens. Not too much extra work and it feels like it ventilates well.

Should it be seen as a gap width of 12 or 40 mm?

They are an excellent option

 

[hul]

Isn't there something wrong with the facade if it requires such intense drying as hul wants?

No, you should know the stresses a facade is subjected to when there is driving rain against it. I recall that storm Gudrun could be compared to a water column several centimeters over the entire facade. Then you might understand how much water gets in.

If you then have a damp air gap, the whole point of a two-stage sealed facade is lost because the pressure difference will be between dry and damp.

 

[smurfen72]

There are plenty of houses with lock panels that are only ventilated through the gap between the boards. I haven't heard of anyone having problems because of the small air gap, but it's not something I have or plan to research. I let common sense prevail most of the time when I build.

 

[hul]

There are plenty of houses with lock paneling that are only ventilated through the gap between the boards. I've never heard of anyone having problems because of the small air gap, but it's nothing I'm into or plan to research. I let common sense guide me for the most part when I build.

No, why shouldn't one believe in research?

 

[KnockOnWood]

Isn't there something wrong with the facade if it requires such intense drying

Wooden facades probably always let in some water. Through joints between the boards, through knot holes that have formed when the panel has dried, through... The conclusion is probably that it should be ventilated behind the surface layer/panel, and the moisture-saturated air must have a way out.

PS Just board and batten or similar panels with good spacing between the bottom boards, unlike, for example, double-faced tongue and groove, which was the case here, I think is normally sufficiently ventilated. The small saw cuts on the board, which are made to prevent it from warping, provide no ventilation as they quickly fill with sawdust, mouse droppings, bird feathers, and other debris.

 

[RoBo]

From what I understand, it's not the moisture itself that is the problem but the water that settles on the nail battens and gets into the wall. According to Träguiden, it's sufficient to have beveled nail battens so the water flows outward.

 

[hul]

From what I understand, it's not the moisture itself that is the problem, but rather water that settles on the nail battens and makes its way into the wall. According to the Wood Guide, it's sufficient with a beveled nail batten so the water goes outward.

no it's the moisture that is the problem not free water. even if free water is also bad

 

[smurfen72]

No, why shouldn't you believe in research

You can believe in research if it is done by independent researchers. The problem is they are often paid by some entity, and then the results are often skewed towards (the right result). I am convinced that an independent researcher would not equate a panel nailed with a 30 mm gap against the insulation with a one-step sealed facade, which is something entirely different. Google it, and you'll see the difference.