Overboarding a ceiling

I cant see screwing into laths achieving anything, need to screw into joists.

Keeping the old lime up is a real sound insulation plus. It also avoids the Filth from Hell that lives above century old ceilings, and destroys all.

NT

In my experience old L&P usually has an uneven surface where some is starting to pull away. When I've done this I've used new battens shimmed where necessary to get a new level for the pb.

I've just had some success putting a layer of 25mm celotex over the old ceiling, then pb, then screwing through to the joists. This was a small landing ceiling with attic above, though.

In message , GMM writes

The nails are small, the screw just goes in regardless of the nails

You don't want to screw into the lathe it won't give a secure fixing. I worked out the position of the joists at each end near the wall and marked on the walls so I could see where they were. (now I'd use my laser level to then put a line across the boards to follow.

a light cordless screwdriver is useful since you are holding it up all the time (my Bosch 10.8V corless is nice

Hammer.

Surely , it's *under*-boarding?

And, if that doesn't work, a bigger hammer? ;)

Hmm....Hard to disagree with the logic there...but should a grammatical impasse can the job?

I can't agree more with the final point and the sound insulation is undoubtedly true.

I was working on the besis of my experience with L&P in the past: ie, providing it's intact (not always the case), it's pretty tough stuff.