I've a plasterboard wall with several layers of plaster (I'm
practising!)

If I want to plaster yet another skim coat over the top, do I need to do
any prep? Water-down the existing wall? PVA it first? Or can I just
plaster direct onto the previous (dried) skim layer?

In message , AJ
writes
I've a plasterboard wall with several layers of plaster (I'm
practising!)

If I want to plaster yet another skim coat over the top, do I need to do
any prep? Water-down the existing wall? PVA it first? Or can I just
plaster direct onto the previous (dried) skim layer?

To what end ?

Still practising or are you actually going to do something with it ?

--
geoff

raden wrote:
In message , AJ
writes
I've a plasterboard wall with several layers of plaster (I'm
practising!)

If I want to plaster yet another skim coat over the top, do I need to do
any prep? Water-down the existing wall? PVA it first? Or can I just
plaster direct onto the previous (dried) skim layer?

To what end ?

Still practising or are you actually going to do something with it ?

scratch and either pva or wet it well first.

In article , says...
In message , AJ
writes
I've a plasterboard wall with several layers of plaster (I'm
practising!)

If I want to plaster yet another skim coat over the top, do I need to do
any prep? Water-down the existing wall? PVA it first? Or can I just
plaster direct onto the previous (dried) skim layer?

To what end ?

Still practising or are you actually going to do something with it ?


Still practising (my little practise corridor is getting narrower :-) ).
But I'll have the same question soon anyway where there's an existing
'real' wall that needs re-skimming.

In message , AJ
writes
In article , says...
In message , AJ
writes
I've a plasterboard wall with several layers of plaster (I'm
practising!)

If I want to plaster yet another skim coat over the top, do I need to do
any prep? Water-down the existing wall? PVA it first? Or can I just
plaster direct onto the previous (dried) skim layer?

To what end ?

Still practising or are you actually going to do something with it ?


Still practising (my little practise corridor is getting narrower :-) ).
But I'll have the same question soon anyway where there's an existing
'real' wall that needs re-skimming.

Then plaster directly on top - it makes it easier to remove it for th4e
next try

The one thing to remember is to to make sure that the coat underneath is
well wet so that you don't suck all the moisture out of the skim coat
before you have finished

--
geoff