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Does plaster-based drywall exist? Normal drywall is made using gypsum, not plaster. Is it possible to get a drywall that is made out of genuine plaster, not gypsum.

The reason I ask is that find gypsum dust (calcium sulfate) slightly irritating, probably because it has sulfur in it.

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    Not trying to slam china here but a few years back close to hurricane Katrina the Chinese were shipping drywall that had massive amounts, so much so that it was eating the copper pipes and wiring. I thought it was sulfur or pot-ash I don’t remember for sure but some people were affected also. the issue could be the manufacturer more than the product itself as something to look into leaving as a comment as I did not run into this but it was wide spread for a while especially in the disaster area. – Ed Beal Nov 12 '20 at 14:33
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    "drywall that had massive amounts, so" massive amounts of what, @EdBeal? – FreeMan Nov 12 '20 at 14:40
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    @freeman can you not read the post ? The next sentence states I was not sure if sulfur or pot ash. Cement board really? Have you ever purchased or used cement board freeman? – Ed Beal Nov 12 '20 at 15:00
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    I sure did read your whole commend, @EdBeal, and was still confused. And yes, I've used cement board - I noted the disadvantages in my comment. To my knowledge, there's no gypsum in it, though, so it would solve the OPs immediate problem. It may involve other issues (which I noted), but would solve this one. – FreeMan Nov 12 '20 at 15:19
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    There is no "sulfur" in gypsum , it contains sulfate . Same as table salt is sodium chloride , not chlorine. – blacksmith37 Nov 12 '20 at 16:37
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Plaster would be too brittle to be put into a board format like drywall. Plaster is applied wet over a lath or mesh to hold it up and then dries hard.

Drywall is not supposed to have Sulphur in it, but as mentioned in a comment by Ed Beal, there was a lot of bad drywall sold in North America from China that did, and it is causing lots of problems all over. The Sulphur outgasses and causes corrosion of copper wire and pipes. Some insurance companies are now refusing to underwrite houses known to be built with it unless it is removed.

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I am not aware of any plaster-based wall board.

That being said, you could look into blue board (on which, a plaster veneer is applied), if it's plaster you're looking for.

Unfortunately in your case, blue board is still gypsum-based if you're working with it.

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