Adding an extra drywall sheet afterwards - new construction

[Gunnar_80]

Building a new house where we have single-layer drywall and insulation in interior walls. The exterior walls have OSB.
The house supplier does not offer any option for OSB in interior walls. We have opted out of the painting package (puttying, wallpapering, and baseboards) which we will do ourselves. Interior doors and trims are installed by the house company.

Is it technically feasible for us to add an extra drywall sheet to the children's interior walls (the ones without doors) to get a bit more support?
We cut the sheet so it ends above the wooden floor. What I'm pondering is where the drywall sheet meets the ceiling sheet.

 

[Robert-san01]

Shouldn't there be a shadow moulding against the ceiling?

You should ask them to pile the mouldings and skirtings so you can install them when you're done with the extra boards.

But if you're going to reinforce, you have to go with a fiber-reinforced drywall. Regular drywall on drywall, I would say, is a bit wasted if you're aiming for sturdy walls.

 

[para]

Even if the house manufacturer does not offer OSB as an option, you can try to deal with the carpenters. Unless the walls come in finished modules.
Otherwise, it's probably quick to unscrew the drywall, put OSB behind it and screw it back again.
Remember that electrical outlets also need to be moved out with an extra board on the wall.

 

[Rabbithole]

If the interior walls do not come ready from the factory, it can be resolved on site. Don't ask, just decide that it should be the way you want it.

 

[pacman42]

I hope you plaster and grout against the ceiling and don't use moldings. At least, I think it looks so much better in most cases. However, it's hard to find a carpenter willing to do this today, which has led me to simply ask them to push the drywall almost all the way up to the ceiling, and then I've done the grouting myself.

There's no issue with installing double drywall even on walls with doors and windows. It's just a matter of replacing the moldings around, for instance, the door. I routed the casings when I installed renovation drywall (on walls that previously had fiberglass wallpaper) recently as this was the best-looking (and cheapest) solution.

 

[Gunnar_80]

Really good points from everyone!

Pacman and robert: There will also be crown moldings that we will install ourselves.

The walls will be built on-site, but since we're not allowed to be on the construction site during the building period, it will be difficult to deal with the carpenters.
I'll take your inputs into the continued construction!

 

[Robert-san01]

Really good points from everyone!

Pacman and robert: We will also be installing the ceiling moldings ourselves.

The walls are being built on-site, but since we are not allowed on the construction site during the building period, it's difficult to deal with the carpenters.
I'll take your inputs into the continued building!

I would, however, try another round with the carpenters. Just because you're not allowed on the site doesn't mean you can't try to negotiate for the carpenters to install OSB.

 

[Mazen]

Order a load of OSB along with a bag of pastries and a note asking the carpenters that you would be extremely grateful if they could put up the boards before the gypsum. Everyone gets in a good mood with a nice fika and you can cover the extra cost for the work afterwards.

 

[JLyck]

Even if the house manufacturer does not offer OSB as an option, you can try to deal with the carpenters. Unless the walls come in ready-made modules. Otherwise, it's probably quick to unscrew the plasterboards, place OSB behind them, and screw them back on. Keep in mind that electrical outlets also need to be moved out with an extra layer on the wall.

Aren't boxes used today that can be screwed out? The electrician used those when we redid our kitchen. We also installed OSB and plasterboard.

 

[Robert-san01]

Aren't boxes that can be unscrewed used today? The electrician used those when we redid our kitchen. We also put up OSB and plasterboard.

It varies. Depends on what the electrician prefers. I usually go with ABB boxes because they are cheap, easy to install, and fit well. They have two settings. Others, like Schneider/Thorsman, are adjustable.

 

[Gunnar_80]

OK!
I'm going to see if I can bribe the carpenters with pastries

 

[JLyck]

It varies. Depends on what the electrician likes. I usually go with ABB boxes because they are cheap, easy to install, and fit well. They have two settings. Others, e.g. Schneider/Thorsman, are adjustable.

That could be the case.

 

[Shiraz]

OK!
I will see if I can bribe the carpenters with pastries

Hmmm might be quite a lot of pastries....

 

[para]

Don't they use boxes that can be screwed out today? The electrician used those when we remodeled our kitchen. We also installed OSB and drywall.

If you're building new with single-layer drywall, you're probably going for the cheapest option even with the electrical boxes.

 

[kirilian]

However, I would try one more round with the carpenters. Just because you can't be on the construction site doesn't mean you can't try to buy so the carpenters install OSB.

How will you then keep track of all the shoddy work that can be covered up? Maybe that's why they don't want the customer there? Much can't be fixed afterwards either, so it's completely crazy not to be able to visit your construction site every day.