office shed reno help

[cerfy]

hi all,

i have a shed that i want to convert into an office. i am planning on doing the floors first and they currently look like in the pictures attached. how can i get the floor flat? i know nothing about building but would like to give it a go on project like this.
thanks!

 

[motorbiking]

Lift up all the lose bits give it a good sweep and lay a self levelling compound which includes fibre. You may need some shuttering. You should also be thinking about insulating too

https://www.amazon.co.uk/dp/B01N2UQ3Y5?tag=diynot-onto-21&linkCode=osi&th=1&psc=1

 

[^woody^]

What about damp?

 

[cerfy]

ok so i need to damp proof the floor and add insulation? any products that are recommended and those that i should stay away from? busy cleaning up the floor now of loose bits and will sweep as soon as i get a dust mask.