Do I need one coat of plaster or two?

Question

Recently we have had one of our bedrooms re-plastered by a professional plasterer and decorator, but I’ve begun to notice that some of the areas are looking quite poorly done and not coated particularly thickly. Evident around plug sockets, switches and other fixtures in particular. 
It appears to be one layer of plaster that has been used. Is this normal for plasterwork nowadays? 
I recall that in previous years, plasterers would use two layers, but perhaps things have changed. I would like to know for sure, so that I know whether I will need to contact the plaster regarding their work. 
I would appreciate any information about this.

Tony · Accepted Answer

As an experienced plasterer, I was always taught to use 2 coats of finish plaster and I’ll always continue to do so.

Tony.

Mark · Answer

All plaster work is two coats where possible, all plugs and switches are removed or at the least the front of the plug or switch is moved forward allowing access to the back. Unfortunately we are seeing more and more of the one coat plastering going on shame hope this helps mjs

Rob · Answer

I would always suggest using two coats as this gives the best finish. I wouldn't be happy leaving a job having only done a single coat of plaster.

Aaron · Answer

always use two coats 1x base coat 1x top coat (finishing coat on some walls 3 can be applied no more than 6mm to 8mm worst case

Lee · Answer

It's not ideal to be honest, we at L&P plastering always do 2 coats and if 3 is required then we shall.

Michael · Answer

It sounds like the work has been carried out to a poor standard. 2 coats of plaster is still the way it is done using either multi finish or board finish plaster.

Do I need one coat of plaster or two?

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