What the heck...the outer wall?

[adde_camilla]

Well, started tearing a bit in the kid's room. What is what in our exterior walls? The house is from '47. Counting from the inside:
1: Wallpaper
2: Masonite that is 14-15mm thick
3: Paper that is red/gray and wavy
4: Wood frame?

My question is then, what are the paper and masonite for? Vapor/wind barrier or can you simply tear everything out and then put up drywall instead?

 

[Farzan]

14-15 mm sounds extremely thick for masonite. Are you sure you don't mean treetex (soft wood fiberboard, can basically be cut with a bread knife)?

 

[Immobil]

2 = base for the wallpaper. Also suspect that it is tretex.
3 = windbreak

 

[nimhed]

I think the cardboard is just there to keep the insulation in place while putting up the tretex boards. There's no point in having wind protection on the inside.

Tretex has the ability to insulate a little when it comes to cold, but quite a lot when it comes to sound. I would say it's not a problem to tear it down and put up plasterboard instead.

 

[adde_camilla]

Okay, it's probably Tretex. There was nothing in the bathroom when I renovated it. Nor that paper. When the paper is gone, there's a solid wood wall.

So, should the paper stay? When you start tearing down the Tretex, the paper will probably come along. Or should you replace it with something else?

 

[injonil]

As mentioned earlier, the pappen is not needed because it serves no purpose on the inside of the insulation.

 

[nimhed]

As mentioned earlier, the paper is not needed because it doesn't serve any purpose on the inside of the insulation.

Unless the house is so poorly insulated that the wind can blow straight in if you remove it. But if that's the case, you should undertake larger measures.

 

[adde_camilla]

Thanks for the answers! Bring out the crowbar!

 

[estwing]

you are guaranteed to have a plank wall behind. you don't put gypsum against it unless you want a wavy wall.
set up the framework with 28x70 and align it with 60 cc, then plywood, then gypsum, then you have a nice wall.
otherwise, just put gypsum directly on the tretex.

regards,
snickar estwing

 

[MartinGustafsson]

have just been through the same question.
I tore off everything old and put windbreaker paper on the frame, then 45*45 studs with 45mm insulation and nailed on OSB board and then renovation plasterboard... done

 

[adde_camilla]

Several suggestions.... Didn't get much wiser. Everything seems equally correct, in some way.

New question then:
Could there be some type of insulation in the outer wall or is it just plank?

 

[Immobil]

Probably just plank.

 

[pinebar]

If it is a egnahem, then this construction is likely.
Three layers of tar paper are present. One under the facade and one on each side of the sawdust.

(Left is the outer wall without battens but with the facade boards left, right is inward, with masonite on.)

 

[adde_camilla]

Okay, soon I have to decide....
Should I make a big hole in the wall to see what's there or should I go with one of the previous suggestions?

 

[nimhed]

A peephole can't hurt.