prep for skimming onto old lath plaster walls

[jfb]

Walls have been stripped of wallpaper back to original plaster (lime I presume?). 

Assuming it is still sound what would people recommend for skimming onto it?

1. bluegrit

2. PVA till tacky (with one coat before?)

3. pink SBR wait till fully dry

 

Got a whole house to do so quite like the idea of something you can get on and leave to dry

 

cheers

[ProDave]

Rip it off and plasterboard.

 

If you have ANY electrical alterations to do, your electrician will hate you for keeping the lath and plaster.

 

Just my preference.

[saveasteading]

1 hour ago, ProDave said:

If you have ANY electrical alterations to do, your electrician will hate you for keeping the lath 

Will he love you for adding a service void?

[JohnMo]

2 hours ago, ProDave said:

Rip it off and plasterboard.

Service battens tapered edge plasterboard and dry line. 

[jfb]

Ripping it all out and starting again is not going to happen. 
skirting and ceiling coving remaining in place and electrics not an issue.

So if I were to skim on top of the plaster which option would anyone go for?

[Redbeard]

18 minutes ago, jfb said:

Ripping it all out and starting again is not going to happen. 

 

OK, I'll chip in in the light of the above.

 

Obviously none of us (except the OP) has seen or felt the surfaces but, as it's lime, you could consider something like Baumit RK70 - maybe with mesh; it's early and I have not thought that through enough yet. First stab is yes, rather than no, to mesh. And if you want a really smooth finish (think silk gloves) use Baumit Kalkin Glatt - goes on extremely thin, almost like a polish, so the RK70 has to be good. I'm not advertising for B----t, I just used the stuff for 10+ years with great success and I am not a plasterer. Other companies do lime products that do a similar job but I have not used them enough to be used to them.

 

I note that you refer to Blue Grit and PVA. If the existing surface is very friable then no amount of nice lime plaster is going to hold onto the wall, necessarily. If it's sound but pitted, perhaps do something like I have suggested, without 'artificial aids'.  You could do a 'test piece' of both...

 

These lime products are not generally available at mainstream merchants, but they are available easily from specialist merchants.

 

[saveasteading]

18 minutes ago, jfb said:

if I were to skim on top of the plaster

I just wouldn't. 

Easier and better quality to batten out and plasterboard.

Look into metal grid as an option to  timber.

 

[Nestor]

Used the Baumit Multifine RK70 with mesh on internal wood fibre insulation.

Excellent product.

https://baumit.co.uk/products/renovation-systems/visual-renovation/baumit-multifine-rk-70-n

Do a test.

Edited Thursday at 08:33 by Nestor