oa_xxx (X) Apr 27, 2013:

I know its too late for your job but... water-resistant or moisture-resistant plasterboard would fit here - as you noticed companies from the EN world often seem to use their own brandnames (Aqualine, Aquachek, Moisture resistant Wet Area Plasterboard™etc.) and there are lots of variations too (water-resistant drywall/gypsum panels/wallboard, greenboard, damp resistant), but, e.g., "Moisture resistant board is slightly different in that the actual plaster is resistant to moisture ingress and should be used in bathrooms, showers, kitchens and other damp areas where it is likely to come into contact with (although not immersed in) water." http://www.diydata.com/general_building/plasterboard/plaster...

Michael T (asker) Apr 26, 2013:

Unfortunately this wasn't a viable option at midnight last night hehe :) But it's definitely a good idea, one I'll bear in mind for the future. I actually looked on the Wickes website and found the term "aquapanel", but it sounded too much like an own-brand product and I wasn't sure how widely it would be understood...

David Moore (X) Apr 26, 2013:

Michael, as you are in the UK, why not phone a bathroom installation company - it's what I'd do? Okay, so they won't be able to tell you the translation, but couch your enquiry in general terms, and I'm sure they'll be delighted to help.