Problem with beading showing through new plaster.

[Dark Matter]

I recently had some walls plaster skimmed. I allowed the plaster to dry for

1 week. I noticed then that I could see an outline of the corner beads (galvanized thin coat type) but assumed that was due to the thinness of the plaster.

I have sealed the walls with a 1:5 water/Gripfill PVA solution and applied 2 coats of B&Q "Colours" vinyl matt emulsion paint, allowing each to dry thoroughly. I am disappointed to find that all of the beading shows through as a lighter colour than the rest of the paint.

I reckon that I need to somehow seal the beading again, but what should I use?

Thanks.

[Andrew Gabriel]

The plaster should not cover the rounded corner of the strip -- it is there to give you a nice consistant rounded corner.

Are you sure it's not just the change in angle? Or maybe the paint coverage is inadiquate?

[Dark Matter]

The corner edge was not plastered and it was the whole 1" wide bead which showed through the paint. I emailed the "Brewers" (trade decorating supplies) website and received a very helpful reply.......

Never seal a newly plastered wall with PVA as is prevents the vinyl emulsion from curing properly. The best thing to use is watered down emulsion paint - which is what I always used previously.

Brewers recommended that I use a stain block ("Zinsser BullsEye 1-2-3") over the affected area. One coat of that followed by a further 2 coats of emulsion has solved the problem. Phew!

[Dave Plowman (News)]

Paint the beading with a near matching oil paint first.