Hot Tub area? Ideas needed.

[EddieM]

Filthy, Petri dishes IMHO.

 

[Ian H]

Hi Ian. Late reply but hows the drainage in this spot. Be careful the base area can't get waterlogged. I'd say 25mm would be a waste of time dont they use that
General Purpose Polystyrene under concrete floors and that's usually 75mm at least.

Drainage is good, it runs off onto a lower level. I’ll leave the insulation, I think it would be good between the concrete and the tub but then it would be touching the sand so might get eroded or something. Apparently the tub has the spray foam stuff on its underside so I might look at insulating the cabinet if there’s room.

 

[Ian H]

Filthy, Petri dishes IMHO.

I prefer Sex Pond TBQH.

 

[martin hill]

Brother in law hired one of the inflatable ones in December for a family get together. Took 3 days to get upto 40c and as soon as you put the bubbles on it lost heat. Got to admit it was good and i didn't go in but the missus says it wasn't cold even when getting out. With the solid type tubs you have more chance of holding the heat in. I not condoning it but if you have a lamppost out the back of the street it could accidently get wired into that lol. Also i prefer Sex pond too.

 

[Ian H]

No lamp post but my neighbour does have electric in his shed

 

[martin hill]

Well get started on Tom,Dick and Harry to his shed.

 

[Ian H]

I’ve just done the base

I’m still thinking of putting 25mm of Celotex over the top. My only concern would be that the edges of it would only have a bit of membrane between them and the sand.

Is Celotex suitable for outside? Can someone talk me in/out of the idea scientifically please?

 

[Ian H]

 

[martin hill]

https://www.celotex.co.uk/applications/floor-insulation/concrete-slab-floor I'd check out the website. Wish i'd of known you were doing it this weekend as the missus been doing my head in lol.

 

[Ian H]

https://www.celotex.co.uk/applications/floor-insulation/concrete-slab-floor I'd check out the website. Wish i'd of known you were doing it this weekend as the missus been doing my head in lol.

I didn’t really want to do it, I was rough yesterday and today I thought I’d best get on with it while the weather was good. I got my son to shovel the ballast and bring the cement and I chucked it in the mixer then in the hole.

I just e-mailed Celotex about using it outside but I think I’ve made my mind up to use it anyway.

 

[martin hill]

Ian i wouldn't bother with the grass. I'd go for https://www.screwfix.com/p/capital-valley-plastics-ltd-damp-proof-membrane-black-1200ga-3-x-4m/73066 then you can sandwich the celotex between two sheets and seal it.

 

[Ian H]

I’ve already got the grass but wouldn’t fancy cutting it exactly for the tub.

 

[martin hill]

You could have a lawn around the tub if it the short soft stuff. Easy on the bare feet but still grippy

 

[Ian H]

We had some bad frost in the night . I just touched the surface of it and it’s still wet. Hopefully the gazebo top and wall/fence protected it enough.

 

[Ian H]

Celotex got back to me quickly:

Fair enough, it’s not suitable and it was good if them to let me know so quickly.