Building a thick interior wall.

[Joakim Alpsten]

Hello,
Hold on, because here comes a beginner's question!

I am planning to close off an opening we have (think of it as an archway), with dimensions 2140x2115. However, this wall is quite deep at 180mm.

Would it work to build it like this:

From outer wall to inner

Drywall + Plywood + 45x120 stud + 10mm OSB + Plywood + Drywall.

This adds up in my head to 13+12+120+10+12+13 = 180.

Or is there a smarter way to 'thicken it' so that it becomes 180 deep?

 

[Pyromanapa]

Place the 45-studs 13mm in from each side. Then put on gypsum. Or move the studs in even more to make room for plywood if you want that.

/Micke

 

[useless]

The alternative is to regulate each side separately with thinner studs (45x70). This also makes it easier to adjust each side to the existing wall if they are not completely parallel.

 

[Joakim Alpsten]

The alternative is to regulate each side individually with thinner studs (45x70). It will also be easier to adjust each side to the existing wall if they are not completely parallel.

But then the wall will be 190mm? Want plywood + drywall?

Thanks for the answers

 

[useless]

You don't have to put them in the same place...

 

[Joakim Alpsten]

You probably don't have to place them in the same spot...

ok! Do I understand you correctly if you mean that I place (for example) a 120 stud along the floor and ceiling, and then stagger with 45x70 studs?

 

[useless]

For example, like that. It depends on how exactly parallel the walls are in the two rooms. I am used to houses where nothing is straight, so in that case, you can't build a wall that depends on another being straight.

 

[fb35523]

The advantage of using, for example, 45x45 battens on each side along the entire edge and then staggering with, for example, 45x70 is that the two walls become both heat and sound insulated from each other. Between the children's rooms, I've built the walls like this so they won't be disturbed by the other banging on the wall and such. You mention an outer wall, and in that case, it might be the heat you should mostly insulate. Then you should also think very carefully about the moisture barrier so that it works well with the existing wall. On the other hand, an arch between the inside and outside??? What does it actually look like? What material is in the existing wall?

 

[Joakim Alpsten]

The advantage of using, for example, 45x45 studs on each side along the entire edge and then staggering with, for example, 45x70 is that the two walls become both heat and sound insulated from each other. Between the children's rooms, I built the walls like this so they wouldn't be disturbed by the other banging on the wall and the like. You mention exterior wall, and then it's probably mostly the heat that you should insulate. Then you should also think carefully about the moisture barrier so that it works well with the existing wall. On the other hand, an arch between inside and outside??? What does it look like actually? What material is the existing wall made of?

Agg it's of course not an exterior wall, just idiotically formulated. Meant from one wall through to the next.

Thanks for the answer. Won't it be flimsy with 45x45?

 

[fb35523]

Late response, but... If you put 45x45 around the edges and attach it to the existing wall with appropriate spacing between the screws, it's completely stable. It becomes like a frame attached to the existing wall. The "free" studs in the middle of the cavity probably need to be 45x70, however.

 

[Joakim Alpsten]

Thanks for the answers, the wall is finished and we built one side with 45x70 and one side with 45x45, it feels and turned out well thanks for all the answers.