Filling hole in concrete floor under bath

EDit

Hi, we have a bathroom in a converted garage, which has a concrete floor. As shown in the picture, there is a hole in the concrete where the pipes for the bath go underground. We are planning to seal and then paint the concrete floor, but want to fill this hole first. Any suggestions on how best to do this without having to go through palaver of mixing up concrete?

Note, that this area would not need to look nice as it is under the bath and will not be visible when the side panel is replaced.

Thanks

The Continental Op

Doesn't need to be concrete sand and cement would do.

A bag of premixed sand and cement could be mixed up in a bucket https://brooksonline.ie/kilsaran-3-1-sand-cement-25kg-ug7156

EDit

The Continental Op wrote: »

Doesn't need to be concrete sand and cement would do.

A bag of premixed sand and cement could be mixed up in a bucket https://brooksonline.ie/kilsaran-3-1-sand-cement-25kg-ug7156

Thanks. If we do go down this route, is it a case of just pouring in the concrete mix and levelling off? or do we need to do anything to the hole first (there being earth in there)?

The Continental Op

I'd dig it out a little so you were putting in a decent depth but there isn't much else you can do in such a small area.

If the pipes run through the soil and not the existing concrete then I think I'd put something around them. Split a larger diameter plastic pipe and slip it over, but nothing really to be gained by that just something I'd do.

Calahonda52

Looks far too wet to cover up. just look at the mould

The Continental Op

Calahonda52 wrote: »

Looks far too wet to cover up. just look at the mould

Cold pipes coming out of the ground are bound to attract condensation.

meercat

Don’t cover that stopcock up if it’s the mains water supply

The Continental Op

meercat wrote: »

Don’t cover that stopcock up if it’s the mains water supply

Its not below the level the OP is going to fill is it?

meercat

The Continental Op wrote: »

Its not below the level the OP is going to fill is it?

The pipe coming out from it appears to be just above floor level. Op will confirm though

EDit

thanks all... stopcock is above level that concrete will reach.

if anyone’s interested, partial success (or partial screw-up, depending on your viewpoint) today as filled hole to about an inch below level, at which point concrete ran out. Shops closed at that point, so will need to top up tomorrow. increasingly pleased this will not be a visible or load-bearing area

Calahonda52

The Continental Op wrote: »

Cold pipes coming out of the ground are bound to attract condensation.

and?

Tippbhoy1

Looks like there was a bit of remedial pipe work done there in the past. Area looks a bit damp...but maybe it’s not. If you’re happy enough it’s dry I’d just fill it up with a bit of concrete and level it off. By the sounds of it the whole area is cold as a converted building so I wouldn’t worry too much about a bit in the corner then.