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Andrew Gabriel Andrew Gabriel is offline
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Default Skimming walls - do reveals need new corner beading?

In article ,
Lobster writes:
wrote:
On 13 Oct 2008 15:18:59 GMT,
(Andrew
Gabriel) wrote:

In article ,
Cordless Crazy writes:
When skimming walls in order to bring a plaster finish up to a better
standard, what happens at reveal and external corners? Do new mini
thin-coat angle bead/mini mesh get fixed or simply use a corner
trowel?


Any plasterer I've had do this job for me has always attached new
(standard) beading over the old.

Anyone use this Screwfix product for corners?:

http://tinyurl.com/3v4nbt
Never seen it before. Can't actually imagine how it can work.


It's just tape with two metal sections stuck on in the middle( the
grey parts with a very small gap between) which you fold over and
fix to the corner of the wall and plaster over it .
http://img.photobucket.com/albums/v4...e/IMG_9189.jpg


I don't get that either. If you put that stuff to a corner edge prior to
applying 3mm of skim plaster, then surely the reinforced metal corners
will be buried under 3mm of plaster which will be vulnerable to knocks -
surely the whole point of using beading at external corners is so the
metal is exposed to the atmosphere and protects the corner?


I'm not sure the edge vulnerability is the main issue here.
It's rather more that the 3mm raised edge of the plasterboard
beading gives you a perfect corner edge to trowel off against,
and you don't have to make a perfect corner out of plaster, which
is more difficult. You can also plaster both walls together as
the beading isolates the two plaster finishes, which you can't
do if you are forming the corner by hand.

I can't actually see any point using that paper/metal tape at
all, and I still don't understand what it hoped to achieve.

--
Andrew Gabriel
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