Tongue and groove boards instead of OSB?

[-MH-]

Sheathing is cheaper and solid wood is always nice. Is there anything that would make me regret using sheathing (17 mm) behind gypsum instead of OSB?

 

[Snailman]

Råspont is cheaper and solid wood is always nice. Is there anything that will make me regret using råspont (17 mm) behind gypsum instead of OSB?

I placed råspont behind the gypsum throughout the house, horizontally on the exterior walls and vertically on interior walls (depending on the direction of the studs in the wall). But back then, OSB was cheaper than råspont. If the wood was end-jointed, there was less waste than if it wasn't. I used a nail gun. When I put up the gypsum later, I didn't have to worry about where the studs were positioned as I attached them to the råspont.

 

[fribygg]

I've had a bit more trouble with the junction boxes with råspont, but it's nice not having to carry/lift 120cm panels and the waste they often cause at the gable ends.

 

[pacman42]

My house has scrap wood behind the drywall, that works fine too.

 

[-MH-]

Mm, end-matched yes. Doesn't seem to be available in the cheaper qualities. If you join over joists, there shouldn't be much waste. Or you can join in the air, it can't be that precise.

@fribygg, it was when I was sitting with an electrical box in front of me that I was thinking. The box is for 24 mm boards, 13 mm gypsum, and 11 mm osb, so it just fits. But with raw spruce, the box ends up 6 mm in. Is that a problem?

More troublesome with hole cutting for boxes?

 

[Snailman]

Mm, tongue and groove yes. Seems not to be available in the cheaper qualities. If you join it over the joists, it shouldn't lead to much waste. Or you can join it in the air, it can't be that critical.

@fribygg, it was when I had a junction box in front of me that I was wondering. The box is for 24 mm boards, gypsum 13 mm and OSB 11, so it fits perfectly. But with råspont, the box ends up 6 mm in. Is that a problem?

More cumbersome when cutting holes for boxes?

I've had a bit more trouble with electrical boxes with råspont, but it's pleasant to avoid carrying/lifting 120 cm boards and the waste they often result in when dealing with gable ends

I used Schneider VP2 boxes for triple drywall, they can handle 17 mm råspont plus 13 mm drywall.

It has a blue ring
threaded screw ring for board thickness 24-39 mm

 

[-MH-]

Well, but Malmbergs makes boxes for double plaster that cost a fifth of Schenider's..

Currently using ABB's boxes as a kind of compromise now.

 

[fribygg]

Mm, tongue and groove yes. Seems not available in the cheaper qualities. If you join over the joists, there shouldn't be much waste. Or you can join in mid-air, can't be that precise.

@fribygg, it was when I had an electrical box in front of me that I started wondering. The box is for 24 mm boards, gypsum 13 mm and OSB 11, so it's just right. But with rough paneling, the box ends up 6 mm in. Is that a problem?

Is it trickier to make holes for boxes?

If the gain from cheap rough paneling is lost due to expensive boxes or inconvenient mounting, OSB might still be preferable?

 

[Snailman]

Yes, but Malmbergs makes boxes for double plasterboard that cost a fifth of Schneider's..

Currently using ABB's boxes as a kind of compromise.

They mention 26mm for double plasterboard and a rotating ring, does that mean it's not a screw ring?

I bought my vp2 at elbitik quite cheaply, but they don't seem to have vp2 anymore?

 

[wildeside]

Raw boards are fantastically good when setting up walls, etc. kattvindar and similar cramped spaces.

 

[Utsliten och utdömd]

They mention 26mm for double gypsum and rotatable ring, does that mean it's not a screw ring?

I bought my vp2 from elbitik quite cheaply, but they don't seem to have vp2 anymore?

replaced with multifix, same function with adjustable depth

 

[Snailman]

replaced with multifix, same function with adjustable depth

It was the ABB boxes he had I wrote about, I don't know anything about Schneider's new boxes.

 

[-MH-]

24 mm deep according to my ruler, and I see no way to adjust them.

I don't know if it's a less smooth installation, maybe even easier with hole cutting, etc., since you don't need to measure for a hole saw, just notch out in the paneling a bit freehand.

Leaning towards råspont, feels more solid.

 

[Utsliten och utdömd]

It was the ABB boxes he had I wrote about, I don't know anything about Schneider's new boxes

No, but you said that the electrical shop didn't sell VP2, that's because they are discontinued and replaced by Multifix, which is their successor.

 

[Snailman]

24 mm deep according to my ruler, and I don't see any way to adjust them.

I don't know if it's a less smooth assembly, maybe even easier with hole-making etc., since you don't need to measure a hole saw, just notch out in the tongue a bit freehand.

Leaning towards råspont, feels more solid.

I wasn't in a hurry, so I took measurements and sawed with a hole saw before I put the råspont in place, as the boxes stuck out a bit from the rule. You can also aim a laser cross in the middle of the box, and then you know where to drill with the hole saw when the råspont obscures it.

It wears out very much on Hole in one if you try to use it with råspont.