We are now at the stage of tiling our (many) bathrooms/en suites and would be grateful for some advice.   When the plasterers boarded up around the Gerberit frames they cut large holes in the plasterboard to save them time.  We're concerned that when we tile and hang the toilets there will not be enough support and the tiles may crack.  Will we need to fill in the gaps at all or reinforce behind?  All the frames are hard up against the plasterboard.  I've attached photos of the four of