Plasterboard before screed... any major issues?

[eandg]

Looking at programming/trades availability and it would work out best for us to sheet on the ground floor in advance of getting screed poured (would be looking at c.20mm between bottom of plasterboard and top of screed but could cut boards shorter if required). Is this a bad idea?

[Mr Punter]

Sounds fine to me.

[Conor]

We did all our boarding before screed. Normal. You board right down the the floor slab, don't trim.

[nod]

Normal to screed first 

But if you are boarding first remember to add some ply rips 25 mil above dpc to any stud walls 

[eandg]

1 hour ago, nod said:

Normal to screed first 

But if you are boarding first remember to add some ply rips 25 mil above dpc to any stud walls 

Not 100% sure what you mean? It's a sips kit with the load bearing ground floor walls already in and sheathed/will be in advance of screed. Thanks. 

 

Thanks @Conor @Mr Punter

[nod]

I

1 hour ago, eandg said:

Not 100% sure what you mean? It's a sips kit with the load bearing ground floor walls already in and sheathed/will be in advance of screed. Thanks. 

 

Thanks @Conor @Mr Punter

If you plastered first and don’t keep it above the screed The plasterboard will act like a sponge and suck all the moister into your plasterboard 

 

[eandg]

3 minutes ago, nod said:

I

If you plastered first and don’t keep it above the screed The plasterboard will act like a sponge and suck all the moister into your plasterboard 

 

Ah okay - so if there's any prospect of contact basically buffer with ply so that takes the moisture from the screed?