Finishing a plasterboard external edge.

In article , chris French writes

A corner bead is really the only proper way, it is resilient and provides a straight edge. You get them for PB applications in plastic or metal and you just will in behind them with filler of board finish. Even B&Q do them but there you will have to dig for a straight one.

A thin plastic corner bead, will do the trick. You will need to use bard fill or multifinish plaster to feather the edge away and into the flat of the wall.

If the plasterboard is to be tiled British Gypsum recommend that a stronger bond will be achieved if the tiles are glued directly onto the PB rather t han plaster skimmed board. If that is the course you take use dry-lining co rner tape which is a paper reinforcement that has two thin metal strips in- bedded, this can be used on both internal and external corners. Simply atta ch with dry-lining joint filler then cover with further filler feathering t he filler away from the corner. The thinness of the tape means you do not n eed to build up any real thickness of filler. Any unevenness in the filler is very easily sanded away.

Richard

In message , Tricky Dicky writes

Well, some si being tiled, some not. it's not being skimmed anyway, as there isn't enough of it to bother with getting someone in.

I'm wondering how strong the edge is though compared to using a thin edge bead as suggested by John and fred (which at the moment seems the way to go. . Less work at first, as probably a lot less sanding to get it feathered in, but more work if I have to redo it sooner.

Its not, if its anything like the plasterboard tapes I've used. A corner bead will give you strength. The upside of beadless plaster outer corners is that its dead easy to fix any dings.

NT

One way, depending entirely on the layout etc, might be to form the corner from two tapered edges of plasterboard and incorporate a corner bead. Then it can be filled to the bead rather than having a bump from tape etc that has to be feathered out. It's still feathered of course, but the feathering is under the filler and you're making a flat surface.

In article , chris French writes

Yep, I tried it once and your instincts are correct, I wondered if I was using it incorrectly but no, it is just junk.