Non-toxic OSB and chipboard wanted!

[Robert-san01]

Interesting! Anyone with experiences with Habito?

Found a price at Beijer:

PLASTERBOARD GHE 13 HABITO
12.5 x 2400 x 900 mm
213.80 SEK/board

Gyproc Habito - plasterboards with revolutionary fastening strength. Recommended load, with a regular wood screw, is 40 kg. With Habito you get a very strong system solution for interior walls, which in many cases can replace OSB and plywood, with high fire safety and extra good sound insulation as a result. The board is cut and installed like regular plasterboards.

It was launched last winter and is not sold at Byggmax so I don't think many private individuals have tried it.

 

[Freddedan]

Stone, does it work to build houses with? or does it contain a lot of toxins?

There's quite a lot of heavy metals in stone, not to mention radon

 

[nino]

Fermacell boards are also quite good when it comes to mounting things

 

[Kalle_Kiander]

It costs about the same as gypsum and OSB combined, but you save on screws and half the labor time. So I think it sounds like an easy choice.

Plus, we then avoid the chemicals this thread has been about. Foil hat off then.

 

[Odjuret]

Plus, we will then avoid the chemicals this thread has been about. Taking off the tinfoil hat then.

I just ordered my new tinfoil hat, so now I want to wear it

 

[lars_stefan_axelsson]

Now I've just ordered my new tinfoil hat, so now I want to wear it

Completely wrong thinking. There's naturally research on it. It turns out the tinfoil hat does not block harmful radiation but rather concentrates it inside the head! (Think satellite dish with the brain in the focal point). So it's not without reason to believe that's why "they" have spread the idea that you should wear a tinfoil hat to avoid "them"!



But joking seriously. This kind of mockery that "everything is dangerous so we might as well ignore everything" is as misguided as the opposite. I.e. that "toxins are dangerous." There are certain substances and toxins that we know are so problematic (e.g. formaldehyde in old-fashioned particleboard), that it's justified to avoid them. And there are also many others that, although we know they're dangerous, the dose and exposure are not such that it would reasonably lead to any problems.

A current example of that is the lead in the brass faucets in the kitchen, which the consumer agency issued a warning about. It turns out that to ingest those levels, you would have to let the water stand in the pipe of the faucet for several hours (overnight) and then use the water directly. No sensible person does that. And in any case, not day in and day out. It's enough to flush just a little, much less than you flush to get fresh and cool water, and the levels are down to "nothing." So even if it's reason enough to rather choose a stainless steel faucet when renovating, it's a small reason in context.

So, if everyone at least learned to think in terms of concentration and dose, much would be gained. We know, for example, that woodworking on an industrial scale leads to allergies, beyond the purely lung-damaging problems that exist with dust. Does that mean wooden houses, as such, are particularly exposed to these allergies? No, probably not. Usage and exposure are entirely different. Does it mean, however, that wood is harmless as a building material? Both yes and no. It is a natural material that many mold fungi, bacteria, pests, etc., have specialized in. When we cut down the tree and saw it up, naturally the tree's natural defenses against such things disappear. So, if building with wood (or other organic materials), one has to be careful with, among other things, mold.

That's a risk that is reduced or completely disappears when building with stone. But then other risks arise (e.g., radon as pointed out above).

So, I'm as much against "hunting toxins" (many of these toxins have a net positive impact for us humans, and we have long experience of their uses), as I am against "everyone dies anyway, so I close my ears and ignore everything."

Life is about managing risk, and you don't do that by being afraid of everything or by burying your head in the sand.

 

[JohanLun]

I try to think about both how we residents in the house will feel, but also about how the house itself is doing... In older houses, natural materials and breathable construction are probably a good way to go, I think...

 

[Klicka]

But good ventilation in the house should air out toxins, right?

 

[lars_stefan_axelsson]

But good ventilation in the house should air out toxins, right?

Yes, for example, it's one way to "deal with" radon problems, so it naturally works more or less well for other airborne pollutants that outgas from building materials as well.

 

[Kalle_Kiander]

Found another manufacturer of formaldehyde-free OSB:
http://www.holz-kogler.de/3_6_SterlingOSBZero0609.pdf
Price about 40 kr/sqm. Is this preferable over Byggmax board?

Otherwise considering double drywall, which would solve this problem. Plus it will be cheaper (500 sqm). Depending on the attachment, double drywall can handle loads of 20-50 kg/screw. And where wall cabinets and TV are to be hung, we can install noggings. Thoughts on that?

 

[JohanLun]

One wonders, what is the formaldehyde replaced by in OSBn?

One also wonders what the HABITO board has done to make it better than a regular gypsum board?

Surely one could read up on this, but perhaps someone in the thread has already done it...

 

[Peter2400]

Found another manufacturer of formaldehyde-free OSB:
[link]
Price about 40 SEK/sqm. Is this preferable over the Byggmax board?

Otherwise considering double gypsum, which solves this problem. Plus, it becomes cheaper (500 sqm). Depending on the fastening, double gypsum can handle loads of 20-50 kg/screw. And where wall cabinets and the TV need to hang, we can install noggings. Any thoughts on that?

What happened to the Habito boards then?
They can handle at least as much as double gypsum and take half the time to install.
Do you have volunteer workers or a lot of spare time?

 

[Kalle_Kiander]

Replaced by pmdi. Habito has reinforced theirs with fiberglass. But it is heavy and difficult to work with. Additionally, expensive.

 

[Kalle_Kiander]

Here is my little compilation :x

DOUBLE GYPSUM
Gypsum​ + gypsum​
40 kr/sqm
Two layers needed:
1. ​Norgips Normal 13x1200x2400 (20 kr/sqm)
​2. ​Norgips Normal 13x1200x2400 (20 kr/sqm)

+ Strength: 25 kg with plug
+ Strength: 50 kg with ESSVE DUCK FOOT 50 kg
​+ Only one type of board needed (less work)
+ Environmentally friendly ​​
+ Health-friendly
+ Less risk of cracking in the walls than wood-based materials
+ Cut with a knife and easy to screw

​FIBER GYPSUM
Fermacell​
120 kr/sqm
​Fermacell 12.5x1200x900

+ Strength: 30 kg without plug
+ Strength: 50 kg with plug
​+ Only one layer needed (less work)
+ Can be further reinforced with Gyproc Normal (+30 kr/sqm)
+ Environmentally friendly ​​
+ Health-friendly
+ Less risk of cracking in the walls than wood-based materials
+ Cut with a saw and difficult to screw

​GLASS FIBER REINFORCED GYPSUM
Norgips Ultra Board​ + gypsum​
120 kr/sqm
Two layers needed:
​1.​Ultra Board 15x1200x900 (100​ ​kr/sqm)
​2. ​Norgips Normal 13x1200x2400 (20 kr/sqm)

+ Strength: 33 kg without plug
+ Strength: 60 kg with plug
+ Environmentally friendly ​​
+ Health-friendly
+ Less risk of cracking in the walls than wood-based materials
+ Cut with a knife and easy to screw​, or?​

GLASS FIBER REINFORCED GYPSUM
​​Gyproc Habito
100 kr/sqm
12.5x2400x900
+ Strength: 40 kg without plug (4 times higher than regular single-gypsum)
​​+ Only one layer needed (less work)
+ Can be further reinforced with Gyproc Normal (+30 kr/sqm)
+ Environmentally friendly
+ Health-friendly
+ Less risk of cracking in the walls than wood-based materials
+ Cut with a knife and easy to screw​, or?​

OSB
Kronoply OSB/3 Contifinish ​+ gypsum​
50 kr/sqm
Two layers needed:
​1. ​Kronoply OSB/3 11x2440x1197 (30 kr/sqm)
​2. ​Norgips Normal 13x1200x2400 (20 kr/sqm)

+ Break load vertically: 266 kg
+ Free from added formaldehyde
- Contains PMDI (polymeric diphenylmethanediisocyanate), which the Swedish Society for Nature Conservation states is not particularly well-researched and long-term effects are unknown.

PLYWOOD
Byggmax Construction Plywood P30 ​+ gypsum​
90 kr/sqm
Two layers needed:
​1. ​Plywood 12x2400x1200 (70 kr/sqm)
​2. ​Norgips Normal 13x1200x2400 (20 kr/sqm)

+ Break load vertically: 270 kg
- Contains formaldehyde

"​REINFORCEMENT BOARD"​ (SPECIAL CHIPBOARD&#8203​
Byggelit Stabil ​+ gypsum​
​60 kr/sqm
Two layers needed:
Byggelit Stabil 12x2500x1197 (​40 kr/sqm)
Norgips Normal 13x1200x2400 (20 kr/sqm)

+ Break load vertically: 258 kg
- Contains formaldehyde ​

 

[Enk Projektet]

Building an entire house without toxins I see as completely impossible but a good vision.

The hardest part is probably knowing which substance will later be classified as toxic/hazardous/inappropriate.