I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

On Thursday, April 17, 2014 8:01:23 PM UTC+1, GMM wrote:

I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.
Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.
So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

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

GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

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.

On 17/04/2014 20:28, Bob Minchin wrote:
GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

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.

--
Cheers, Rob

In message , GMM
writes
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's
possible to find the joists because that's where all the nails are,
holding the laths in place but screwing through the pb into them would
run a better than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws
will hit nails or just screw through at random and rely on hitting
laths more often than not?

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


--
Chris French

"GMM" GlMiMa-AT-yahoo.co.uk wrote in message
...
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?


Hammer.



--
Adam

On 17/04/2014 20:01, GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

Surely , it's *under*-boarding?
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

On 17/04/2014 22:19, ARW wrote:
"GMM" GlMiMa-AT-yahoo.co.uk wrote in message
...
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's
possible to find the joists because that's where all the nails are,
holding the laths in place but screwing through the pb into them would
run a better than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws
will hit nails or just screw through at random and rely on hitting
laths more often than not?


Hammer.



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

On 17/04/2014 22:30, Roger Mills wrote:
On 17/04/2014 20:01, GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

Surely , it's *under*-boarding?

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

On 17/04/2014 20:17, wrote:
On Thursday, April 17, 2014 8:01:23 PM UTC+1, GMM wrote:

I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.
Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.
So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

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

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.

GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's possible
to find the joists because that's where all the nails are, holding the
laths in place but screwing through the pb into them would run a better
than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws will
hit nails or just screw through at random and rely on hitting laths more
often than not?

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'll second that.

Mike

GMM wrote:
I have a lath and plaster ceiling that has seen better days and so I'm
considering overboarding and skimming.

Just trying to think through how this is done: Presumably it's
possible to find the joists because that's where all the nails are,
holding the laths in place but screwing through the pb into them
would run a better than avaerage chance of hitting a nail.

So how is it done? Aim for the timbers and accept that many screws
will hit nails or just screw through at random and rely on hitting
laths more often than not?

Find the joist at each end, about eight inches in from the wall.
Get a helper, a piece of string and some snooker/pool chalk.
Rub the string with the chalk.
Hold it tight on the centre of the joist at each side and twang it, this
will leave a straight line on the ceiling for the centre of each joist.

Forget about the lath nails, screws will go around them.

Don't forget that you'll need longer screws to allow for L&P and depth of
PB, 50mm are usually OK, 25mm for L&P, 12.5mm for PB and 12.5mm bite into
the joist.

Laths won't hold anything, they normall split lengthways when a screw goes
through them.

Make sure you join the PB on the chalk lines - old joists are only normally
thin, 40mm at most unless there's a room above, in which case they'll be
over 60mm