Plastering over dry plaster

Postby cg1 » Thu Dec 20, 2007 6:21 pm


this is probably a silly question...a plasterer has plastered a wall in our house and the overall finish isn't completely straight and flat. We will be installing a kitchen with a worksurface with an integral splashback so the wall needs to be very straight.

Most of the wall is straight (to within a couple of mm) however there is an area of the wall that is about 8-9mm "in" compare to the rest of the wall.

Can we get some to come and patch up this area, or do we need to start again? Could the area be coated with PVA prior to replastering?
Someone told me that I'd need to get all of the plaster removed and start again from scratch!

Any recommendations?


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Simply Build It

Postby kbrownie » Fri Dec 28, 2007 8:41 pm

hI cg1,
Pva and filling out not a problem, will take a couple of applications, if it's 9mm out of even but do-able.
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Postby topmark » Wed Jan 02, 2008 8:30 am

The plasterer should have checked the walls for flatness with a straightedge, particulaly around worktop/unit areas in a kitchen. The deviation of 8mm will fill with bonding plaster, then "rule off" wet plaster with featheredge(straightedge) this leaves plaster flat and level with existing plaster, the trick is to let this coat start to firm up then scrape back the edges with trowel, then close in (press in) and scratch the bonded surface with a devil float. Then the area can be "patched" with finishing (skim) plaster. Hope this helps.
Mark, AKA Topmarks for Plastering.
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