I ripped out the old shower, as there were leaks, etc. SOme of the floorboards were a bit rotten, so I replaced them. Alas! The new boards have curved across; and they are fractionally thinner (metric rather than imperial, I guess) and there are gaps between them 3-4mm wide. On top goes a sheet of ply, and on top of that the shallow shower tray.
I'm short of headroom, too - part of the shower is under a sloping ceiling.
Once I screw the floorboards down, I need some substance to put between them & the ply. Sand cement has been mentioned, but that would just a) ooze through the gaps, and b) crack and disintegrate.
My inclination is to run three fat beads of "Gripfill" along each floorboard, cover most of it with polythene sheet (for later easier removal) and then drop the ply on top, and screw it down. And then the same for the tray itself - the edge is a couple of mm proud of the flat(?) base.
Suggestions, please ?
I'm short of headroom, too - part of the shower is under a sloping ceiling.
Once I screw the floorboards down, I need some substance to put between them & the ply. Sand cement has been mentioned, but that would just a) ooze through the gaps, and b) crack and disintegrate.
My inclination is to run three fat beads of "Gripfill" along each floorboard, cover most of it with polythene sheet (for later easier removal) and then drop the ply on top, and screw it down. And then the same for the tray itself - the edge is a couple of mm proud of the flat(?) base.
Suggestions, please ?
I fix the tray, with silicone sealant round the top edge that will be in contact with the plaster on the walls, then squeeze more silicone sealant all round the top edge against the wall, and THEN (when that's dry) I apply the tanking membrane, and run it say 3mm out over the top lip of the tray. Then tile, leaving a 3mm high gap between the bottom of the tiles and the top of membrane / top of tray, and THEN I fill this gap with more sealant. Instead of the moulded plastic sealing strip. Is that right ?