Recent content by wilmere

OK, I think we mostly agree that stainless is non-magnetic - I'm therefore almost certain that that is what I have and yet I still have a chemical reaction which looks like rust - any ideas? I have a picture but cant figure out how to display it on this forum.

I have checked the angle beads with a magnet and they are not magnetic, suggesting that they are in fact stainless steel - the plaster around them is dry although the bead itself is wet (smells like rust, looks like rust, but when wiped, the surface is shiny). Is there any other chemistry that...

Hm, stainless steel has become galvanised - oh dear, I wondered if that may have happened. I read somewhere that one should not mix stainless steel beads with gypsum based plaster - would that explain the problem?

I have a Victorian building - the windows were renewed 4 years ago and new plastering around the windows was done internally using stainless steel angle beads. On certain windows (on the right hand side only), the angle beads seem to have "rusted" and expanded cracking the plaster and in...