Re: any advice appreciated
Yes con, dot and dab with rapid if primed, yes to white star if not porcelain ....
I have tried my best to ignore this one but it is just wrong. Firstly the recommended bed depth for rapid set is 6mm so if you are thinking of using rapid set for dabbing plasterboard you should not exceed 10mm in isolated arrears whereas the correct product “dry wall adhesive” is designed to do this job.
My second bone of contention is skimmed plaster has a weight limit of 20kg per square meter. If you just dab plasterboard over the top you have not given yourself 32kg but have decreased the 20kg by the weight of the adhesive and the plasterboard.
If any body is uncertain as to whether rapid set is suitable for dabbing plasterboard give the BAL technical support a ring 0845 600 1 222 as I did today and you should get the same answer as me
(no it is not)
Oh yeah the original post was not boarding in-between units it was boarding a bathroom.