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

hul · 19 Jul 2017 at 10:41 AM

R roli said:
Research provides figures on how "good" the air turnover is with different designs. But it doesn't give a value for what is needed to avoid problems? One solution is about 3 times better when it comes to air turnover, but that doesn't say it all; better is one thing, but what is needed? Could it be that all the variants work, just to varying degrees of effectiveness? It may just need 10, 50, or even more or less air turnovers for it to function. What is necessary is what is interesting; knowing that option 1 is better than the other two alternatives is interesting, but it's not the most critical factor in the whole, as it is not disclosed......

Unreasonable question, how am I supposed to know how much moisture your facade lets through? Your construction could be a real botch job, which would obviously require greater air turnover.

If you don't ventilate away the moisture, you'll end up with a single-sealed construction, and I think we can all agree that's not what you want.

Kallebo · 19 Jul 2017 at 10:58 AM

It's largely about how much moisture gets in. There is much debate about whether it's necessary or even harmful to ventilate attics.

Moisture that is added must come out, everyone agrees on that. I claim that the roof is more sealed than the exterior walls and that is where ventilation is needed.

The problem on the roof is that moisture can come from the indoor environment, so I don't believe in solutions completely without ventilation either.

Nyfniken · 19 Jul 2017 at 11:39 AM

For the sake of argument, I just want to point out that I am completely in agreement with hul's perspective.

Anecdotes like "there were no problems with my house" add nothing. I'm not moving into your house; I'm moving into mine. It's like saying seatbelts are unnecessary because I've never been in an accident.

What I want to know is if hul (and I) have missed anything. Could the vertical battens cause any problems that we haven't thought of?

hul · 19 Jul 2017 at 11:42 AM

Nyfniken said:
For the sake of it, I just want to point out that I am completely on hul's track.

Anecdotes like "there was no problem with my house" contribute nothing. I'm not going to live in your house, I'm going to live in mine. It's like saying seat belts are unnecessary because I've never been in a crash.

What I want to know is if hul (and I) have missed something. Can the standing battens cause any problem we haven't thought of?

I have certainly missed some aspect, and it would be interesting to know if so, but the arguments that have come up so far, I simply don't buy.

SBH · 19 Jul 2017 at 11:43 AM

K Kallebo said:
I have actually read that text before and was considering using 20-22mm standing battens for a while. But I found 12 at the lumberyard that fit perfectly.

I have an opening for the exterior walls at the top and bring in air to the catwalks from the gable vents. On the gables, I currently have about a 10 mm gap at the top, along the gable overhang 38°. But I'm a bit uncertain if rainwater might get in there when it’s windy... I can easily close the gap with a strip.

Reasonable?

Do not go below 20mm thickness on the battens.

hul · 19 Jul 2017 at 11:45 AM

SBH said:
Do not go under 20mm thickness on the battens

VA, you've been advocating no vertical battens all along and suddenly you say at least 22mm

why did you change your mind?

SBH · 19 Jul 2017 at 11:53 AM

H hul said:
VA, you've advocated no vertical battens all along, suddenly you say at least 22mm

why did you change your mind?

Horizontal for standing and vertical for lying down.

hul · 19 Jul 2017 at 11:56 AM

SBH said:
Horizontal when standing and vertical when lying down.

Yes, but they said they used 12mm vertical and then a 28mm horizontal to reach 40mm.

Kallebo · 19 Jul 2017 at 11:57 AM

Nejnej 28 horizontal and vertical panel

Kallebo · 19 Jul 2017 at 11:58 AM

Otherwise, I could have run 45 from the start

But next time I will use horizontal panels and get ventilation unbroken from top to bottom...

hul · 19 Jul 2017 at 12:01 PM

K Kallebo said:
Otherwise, I could have used 45 from the start

But next time, I'll use horizontal paneling and get uninterrupted ventilation from top to bottom...

I made a mistake in my post

but you did use 12mm vertical battens, 28mm horizontal battens, and then vertical paneling on top?
So not as SHB advocates, or did I misunderstand you?

hul · 19 Jul 2017 at 12:03 PM

K Kallebo said:
Otherwise I could have run 45 from the start

But next time I will use horizontal panels and get uninterrupted ventilation from top to bottom...

Yes, that would have been extremely stupid of you. I saw I wrote it wrong and have edited it now.

SBH · 19 Jul 2017 at 12:34 PM

H hul said:
I made a mistake in my post

but you used 12mm vertical strapping, 28mm horizontal strapping, and then vertical paneling on top of that?
So, not as SHB advocates, or did I misunderstand you?

What do I advocate?

hul · 19 Jul 2017 at 12:38 PM

SBH said:
What am I advocating?

You have advocated that horizontal battens are sufficient and not to use both horizontal and vertical battens.

SBH · 19 Jul 2017 at 12:51 PM

H hul said:
You have advocated that horizontal battens are enough and not to use horizontal and vertical battens

But you have written about ströläkt and bärläkt before. now you have changed to horizontal and vertical battens.
You don't really seem to be in the game