Skimming over old plaster

plugy · 26 Aug 2020

We have cut holes on the ceiling to access pipes and electrical wires. We have filled with new plaster board, with a view to over skimming the whole ceiling. What is the best approach just over skim in 2 coats or skim over the plasterboard patches to thicken out as they are 3-5mm shy of the ceiling, then two coats. Enthusiastic DIYer.
Also should i paint the ceiling with like a grit coat first, i have tried PVA before and not had avlot success, its dry before you start?

dontbelieveawordofit · 26 Aug 2020

whats on the existing ceiling?

plugy · 26 Aug 2020

Has been skimmed with board finish

dontbelieveawordofit · 27 Aug 2020

it’s 2 coats whatever if you decide to skim .
if it’s fresh plaster id seal the dust with a weak pva. (really weak). then blue grit and skim. i wouldnt use pva on a ceiling to skim to.
you can use the grit on a brush in your patched areas to fill them out slightly.

plugy · 27 Aug 2020

As some areas patched are around 2ft square, would it be easier to fill in with multi to the original ceiling level, then blue grit all over and 2 coat skim. Sorry noob plasterer.

dontbelieveawordofit · 27 Aug 2020

yes it would give you a better result.
re-tape all the joints again if you know where they are and all the bits you patched in.

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Skimming over old plaster

plugy

dontbelieveawordofit

plugy

dontbelieveawordofit

plugy

dontbelieveawordofit

DIYnot Local

Similar threads