clever fixing of bath to wall batten ?

Yes position the bath against the getting it level length wise the way you want it, mark a line at the end of the bath under the rim, take the bath away from wall then use a laser level to to complete the line run at the other end of where the bath sits then secure a baton to the wall.

Shape the batten so the rim of the bath hooks over it rather than just resting on top, then lag it with silicone sealant before fitting the bath. Fill the bath before the sealant goes off so there's a good contact between bath and batten.

Yep, could effectively glue it down, but I would prefer to have a tightenable fixing. I'm thinking of long bolts etc. Simon.

What's the bath made of? If "plastic", is it framed in timber under the rim?

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Yep, its wood under the rim, although a little spindley in places. I could be screwed into. Simon.

Whoops, "It" could be treated in said manner. Also, fibreglass bath with wood inside the rim. Simon.

One way would be to use hinges, 'though that's a bit whackey.

You could use screw plates let into the batten, and round-headed screws in the rim-supporting timber.

Now that, *is* a clever idea. I would have to ensure the bath could be swung into position from such a weird angle though. I have an image of the whole bath on a hydraulic strut ... But this idea would be sort of self-locking. A variation would be a fixings that engage by sliding the bath sideways a small distance. A very useful train of thought, cheers Chris. Simon.

I'd just rest it on there. It won't be going anywhere. Adjust the feet so that a very small load is taken by the batten. You don't want too much, or it could crack the bath if it is not designed to be supported in that manner.

Christian.

That's what I meant by screw plates - a small (oblong) piece of metal with a keyhole-shaped hole in it.

I know you said you don't want metal brackets, but you could do it by fixing a thin strip of angle steel to the timber on the bath, with the flange projecting above the edge of the bath, then screw that onto the wall and tile over. Or similarly but using 12mm ply instead of steel, remove the plasterboard from that bit of wall and screw onto the studs.

Cut the top of the batten at an angle, such that the lip of the bath is drawn against the wall as it is lowered. To fix it, cut vertical slots for the fixings and use screws plus washers. Leave the screws sufficiently loose that the weight of the bath can push it down, then temporarily fit the bath in place. Remove without disturbing the batten, then fully tighten the screws and perhaps add more fixings.

Harry Bloomfield wrote: [snip]

Ain't got a clue what your getting at? What fixings?

Can't get the hang of this at all. If the bath is rigid at the base, how is the rim likely to move?

Maybe he's a big fellow. ;-)

ben was thinking very hard :

Screws and plugs or expanding anchors.

The screws that hold the batten to the wall.

Flex in the bath itself, flex of the floor relative to the wall ...