We've moved to an old stone Cottage that is built over four floors, two of which are underground (the rear walls anyway). My problem is that the ground floor is freezing and has old quarry tiles, layed I believe on a scree directly onto the earth. I want to take these up, dig down to put in some insulation and then replace the tiles with floorboarding.
I'm a complete novice with old properties/flloring and in need of some advice. Can anyone direct me to where I start, what depth to I take it down to, will wooden joists be ok or would it need to be concrete?
Any help appreciated.