OK it says at least 4 weeks before painting (sealing)
but what about hanging units on them? Will they stop drying out if
there are cupboards on the walls?

And should you pva seal all romos or just bathrooms and kitchens?
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http://www.orderonlinepickupinstore.co.uk
Ah fetch it yourself if you can't wait for delivery
http://www.freedeliveryuk.co.uk
Or get it delivered for free