Blown plaster: back to laths

[WoodyO]

Afternoon all,

1930s house, upstairs rooms and prepping for new ceilings, so back to joists, and walls for a skim.

As wallpaper is coming off its revealing quite a lot of blown plaster, loose back to the laths.

What are my options here?

Strip all back, remove laths and put new boards on walls?

Board over the top of laths leaving plaster in situ.

Thanks

 

[Jurassicspark]

For an easy job, I'd remove all blown plaster and keep the laths in place but overboard it with maybe 12.5mm plasterboard and finish it.

A bit of a longer job which I wouldn't recommend, If you're comfortable in removing that whole pile of junk and installng plasterboard then go for it, if it's in good condition then the first option is better IMO.

What is the thickness of the existing plaster?

 

[WoodyO]

I'm yet to see what the other wall are like but I suspect very similar. Corner room so only two internal walls, the other two are onto brickwork and seem solid.

Plaster is approx. 15mm.

 

[WoodyO]

Well, the other walls aren't so good either... most of the plaster came off by hand. At least I didn't need to get the wall paper off that wall.

 

[JohnD]

The only benefit the laths can bring is you replastered onto them. Which you aren't going to do. The nails are probably rusted and the laths perished and wormy anyway.

If you pull them off, you can clean out the cavity, run any new pipes and cables, and insert dense mineral wool batts to reduce noise transmission.

The thick, heavy, original lime plaster will have been more resistant to sound than modern plasterboard.

 

[WoodyO]

So the plasterer has said try to keep what there is, as it'll be more cost effective.

I've been pulling blown and loose plaster off the laths, there's still sections in the middle where it's springy and I've not yet started on the other wall.

At what point do I say enough is enough and just pull it all off?