British gypsum hardwall plaster - strange odur

[chr15b]

Never used the stuff before but has been used to provide a base coat on a brick wall

As it's drying it has an over powering smell of rotting eggs, is this normal or what could be causing it?

[astroarcadia]

Yes normal smell. Just drying out.

Hardwall is standard bagged base coat product.

[DrDeAtH]

it does have a bit of an unusual smell, but nothing to worry about, just crack the windows open on vent setting overnight for ventilation.

[Simpo Two]

Gypsum - calcium sulphate? - wild guess = H2S (hydrogen sulphide). All schoolboys should know H2S!

[chr15b]

They should put a warning on the pack, that stuff stinks to the point I've not been able to go in there for two days!!

[Simpo Two]

You should meet my accountant...

[andy43]

Hardwall does seem to smell more, for longer, than browning or bonding. Gawd knows why, but it does stink.