[Closed] Cheap & easy way to damp proof a cellar for storage?

you could tank the room with DPM and tape the corners with some appropriate tape. YOu could also batten the DPM to the walls to keep the leading edges off the ground. Then you might as well build a wooden stage floor too to get off the ground too. Depending on the floor material you might want to blind it with sand first.

Or for something a bit more substantial if you have the access and inclination do something like what I did in the shed with concrete beams and blocks:

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I actually did this becuase the shed is leased off common land and It wasnt appropriate putting a slab fill in so a demountable floor was a better idea. New roof to go on early next year.

cheers stoner

You should have built yourself a highly breathable floor (or kept the soil floor!). All you are going to do there is force the ground moisture to build up underneath the floor and send it up the walls big time-> say byebyes to dry room. Basic schoolboy eco/traditional building technology innit? Don't you watch Grand Designs? 🙄

that is a highly breathable floor ^ there's a 6" air gap all the way under, no DPM and retained soil floor.

as you say though in the cellar a suspended floor on bearers with a suitable DPC between the bearers and the floor joists would keep air movement going - youd still want to get the damp air out of the room though or it'll just rot the floor in the end.

Lob a decent dehumidifier in there ? - that's what I've done in one of the brick buildings at the bottom of the garden, seems to work ok so stuff doesn't rust, raises the temperature a little, and surprisingly doesn't seem to cost much to run.

BTW - if you need one that'll run down to around 0 degrees C you need a dessicating unit (eg Ruby-Dry), rather than a refrigerant-based one.