I've just patched the flat bathroom roof of an ageing rellie.
Water ingress has shot the ceiling, waterlogged fibreboard (remember that?) with an overlay of 10mm polystyrene tiles.
I need to rip this down and replace it with the absolute minimum of effort.
Best fix would be 25mm celotex or polystyrene with PB over but the time and effort involved is excessive so I'm looking for a quick fix.
Taking a view on this, I would be inclined to put up foil backed 25mm celotex, secured with regular screws and penny washers, and finish the surface with an-other cheap textured ceiling finish.
If polystyrene tiles were still available I'd be inclined to slap them over the celotex to make the quick fix but they seem to have disappeared, so is there a current quick and dirty alternative ceiling covering?
Fire risk is slight, the walls are full height ceramic tiled.