shed floor

I am buying a 5m x 3m shed and have a nice flat concrete slab to put it on. shed is pre fabricated and will be assembled on delivery. https://noahgardenrooms.co.uk/product/aspen/ I have requested damp proof course and 22mm t&g flooring. There is no option to insulate under the floor so am trying...

I've got a 6' x 3' Tongue & Groove pent shed with a rotten floor. I'm planning to replace the floor with 18mm OSB3. Current plan is to tip the shed on its side, screw in OSB to 'walls', then re-position on fresh base. Would welcome any comments on this, including, is it best to rest shed on...