Suggestions on how to insulate old wooden floor

[maobse]

We have started to pick up an old wooden floor to somehow add insulation underneath. What we found was no insulation (we suspected as much) and a gravel and stone bed 20 cm below the floor. See image.

The house is from around the mid-1800s, and the floor we are picking up was laid around 1990.

The plan is to lay a new wooden floor, but we would like to insulate it. What is the best way to proceed? Is waterborne floor heating even worth considering? Pour a concrete slab?

The stone and gravel underneath are very dry and fine... but we are obviously afraid of changing the house's conditions and risking dampness in the floor/walls.

 

[Snickartasken]

We have started to pick up an old wooden floor to somehow add insulation underneath. What we found was zero insulation (we suspected as much) and a gravel and stone bed 20 cm below the floor. See picture.

The house is from around the mid-1800s and the floor we are lifting was laid around 1990.

The idea is to lay a new wooden floor, but we would like to insulate it. What is the best way to proceed? Is waterborne underfloor heating even worth considering? Pour a concrete slab?

The stone and gravel underneath is very dry and nice... but we are obviously afraid of altering the conditions of the house and risking moisture in the floor/walls.

I would probably start with some fine-mesh stainless steel netting to keep out mice, and then use eps-concrete. Wooden floors don't respond too well to underfloor heating.

 

[Snickartasken]

...But it depends on how much moisture comes from the ground as well...