mdf or plywood for walls?

[Charl1e]

I wouldn't use plaster either, don't like the smell that comes in "plastered" rooms. MDF actually works just fine, though maybe a bit too expensive....

 

[MathiasS]

I wouldn't use plaster either, I don't like the smell in "plastered" rooms. MDF actually works just fine, although maybe a bit too expensive....

You don't offer alcohol to an addict, give a pistol to a murderer, pee against the wind, offer bears food at the cabin in the woods AND YOU DON'T GIVE YRROL MORE OPTIONS! :wow:

 

[Yrrol]

The carpenter says that they recently delivered a mobile home where they built the interior with chipboard, putty, and everything held up throughout the journey despite being lifted with cranes and so on during delivery.. so he was generally annoyed that I even considered paying 3-4 times more for other boards and he dreaded that I would choose 2 layers with plywood+gypsum, hehe

and then using gypsum on a single board doesn't really help the whole when the remaining boards are wood anyway

 

[MathiasS]

Yrrol, stop sitting at the computer, go put up those records now. It's going to be good. Pretty good at least....d^_^b

 

[Danne031]

then I have seen construction pictures where they use plyfa, but what I didn't see was if they put something on top of it as step 2...

They put drywall on top, I can guarantee that with 84956% certainty.

 

[Yrrol]

Have now installed 1½ boards on one wall around the new window and it doesn't feel good at all. Partly, the 10mm thickness was a bit too much. Also, I can't shake the thought that people say chipboard is bad because it burns easily and you can't mount anything on it. hehe

Considering buying plywood for the other walls anyway, getting hold of the 9.5mm outdoor gypsum is probably tricky during vacation time and would be a gamble that would likely fail anyway...

 

[Marcus J]

Have now installed 1½ sheet on one wall around the new window and it doesn't feel good at all. Partly, the 10mm thickness was a bit too much. Partly, I can't shake the thought that people say chipboard is bad because it burns easily and you can't mount anything on it. hehe

I'm considering buying plywood for the other walls anyway, getting hold of the 9.5mm outdoor plasterboard is probably tricky during the holiday season and would be a gamble that would probably fail anyway..

What's wrong with OSB + regular GNE13?

 

[FredrikR]

Just to arrange a gypsum solution, in other words, that doesn't burn so easily..

 

[Yrrol]

*So now I'm getting frustrated* It's impossible to have a wood panel discussion with you. No matter how clearly I say that only wood is an option due to the thickness, I still get a lot of responses suggesting using one or two sheets with 13mm gypsum even though the remaining sheets are 9mm.

I can't replace 110 square meters of wall space when I actually need to replace 5 sheets... I have no benefit from the gypsum surface on a few sheets when the rest are wood - which has worked well so far.

So, I need 9-9.5mm wooden sheets that are no worse than the trusty masonite has been. Could hammer and tear on these unlike the chipboard that flaked off in pieces when I fiddled with the scraps...

MDF seemed so finely ground and gave me the impression of being easy to break.

I haven't seen or handled OSB, but according to the store

... Usage area Wall, ceiling, and floor constructions indoors.

which sounded promising, unfortunately, they only have 11mm in stock but maybe it's possible to panic order something thinner... The surface doesn't look easy to handle though, and I recall the painter being horrified when OSB was mentioned.

Plywood comes in quite a few different types, so something should work...

I can't get outdoor gypsum now with the distributor being closed for holidays

having two super-thin sheets, just to get a symbolic wood surface that can't bear much, and a gypsum finish that still isn't much benefit since the rest is wood... more materials to buy, more hassle to mount... nah...well...

But, now I'm going to sleep, and I'll see how many hate posts await me tomorrow, hehe

 

[prototypen]

Stop it, sell, unplug the network cable, burn the crap, move to a straw hut in the Bahamas.
Stop tracking the rest of us.

Gypsum is gypsum, either lots of gypsum filler or gypsum on top of anything underneath.

Protte, now builds with plywood + gypsum (previously it was board behind the gypsum)

 

[Yrrol]

Just sat down and tested which step on the drill I could use when driving screws into the different boards.
First, I drove the screw so the head was against the board and then started test-driving step by step. (repeated a few times to confirm.) (gypsum screw)

10mm Particle board, didn't even withstand step 1 before it spun freely.
8mm MDF board, withstood up to step 5 before it spun freely.
9.2-9.8mm (can't remember) masonite, withstood steps 8-10 before it spun freely.

What these steps mean on this Makita BHP440, I don't know...

Particle board: Density: 630-720 kg/m³
MDF: Density: 740-810 kg/m³
masonite: 900kg/m³.

 

[MathiasS]

 

[FredrikR]

What are you planning to mount on the walls, since you seem worried that for example chipboard won't hold?
My friend has chipboard behind all the drywall in his newly built house and garage, and I haven't heard that he's had any problems with curtain rods and TVs falling down.

 

[MathiasS]

...perhaps I should clarify that the board referred to as stable in the image above refers to a regular particle board.

 

[Yrrol]

Well, it was someone else who claimed that you could forget to mount the slightly heavier stuff.

But I've solved it now; the chipboard will stay in the kitchen, as the fridge, etc., will hide the worst, and there will be hardboard in the living room to make it uniform again...

So now I won't "bug" you, which I apparently do when I ask for opinions on wooden boards..
-Thanks for the answers, though. and I've saved the picture for future projects.