Talk:Magnesium oxide wallboard

Help with magnesium oxide board installation
please any suggestions for the proper jointing compound required for the boards also what type of material is used for the skimming of the the boards?41.219.220.112 (talk) 23:41, 29 January 2009 (UTC)
 * It is best to ask a question like this at Reference desk/Miscellaneous. Graeme Bartlett (talk) 01:58, 30 January 2009 (UTC)

water/moisture resistance?
What's up with those claims? Magnesia does react with water, after all, and even dissociates into Mg2+ and OH- ions. I suppose the pressed material offers very little surface area for that, but "waterproof" would be quite strong a claim.

I would guess it's similar to how aluminium forms a passivation layer and is quite hard to dissolve except in the presence of catalysts such as mercury.

What's the effect of acid rain or H2CO3 (worse, a combination of the two) on MgO boards?

RandomP (talk) 10:44, 29 August 2009 (UTC)

'Disadvatages' section reads like an advert from one of the biggger suppliers in the industry, the language should be changed. — Preceding unsigned comment added by 86.132.24.130 (talk) 12:29, 17 December 2011 (UTC)

Rosendale Natural Cement non-fired?
The article about it: https://en.wikipedia.org/wiki/Rosendale_cement says that it is "calcined" (~=heated) in a kiln.

So if they're the same thing and that page is right, then the claim here that it's non-fired is wrong.

I think that what's natural about it is that the manufacturers found geological sources of appropriately pre-mixed minerals. ArthurDent006.5 (talk) 07:50, 3 January 2016 (UTC)

Lede
First sentence is CRAP. Sadsaque (talk) 13:04, 24 February 2019 (UTC)