Im building a wetroom and have fitted an ACO channel drain. The floor is built using 22mm ply overlaid with aquapanel and im just about to 'dress' the junction between the aquapanel and ACO drain. Im doing this with the usual waterproof membrane (from Wedi) which will be set in cementous tile adheisve. Im worried the adhesive wont stick to the metal flange on the ACO drain - should I prime the metal - if so what with.
Thanks.
Thanks.