I've just discovered yet another leaking bottom flush pipe seal on a concealed Geberit cistern, which is especially annoying as we are about to market this house and I think I may have to break through the plasterboard behind the pan to replace it. Luckily I bought spares last time it happened in the downstairs WC.
Google says this and the blistered silicon flush piston seal is common and it also says Grohe pans suffer the blistered flush seal problem (easily replaced) but it doesn't mention the leaky flush pipe seal with Grohe cisterns. Is the Grohe flush pipe seal better designed than the Geberit seal? Which is the better cistern?
Google says this and the blistered silicon flush piston seal is common and it also says Grohe pans suffer the blistered flush seal problem (easily replaced) but it doesn't mention the leaky flush pipe seal with Grohe cisterns. Is the Grohe flush pipe seal better designed than the Geberit seal? Which is the better cistern?