How to insulate and build an attic?

[bompa]

Hello

We have an attic in our house.
I have cleared out all the old junk and mold.
Now there are floorboards and beams down below and a double-seamed metal roof above.

Since there is not much ceiling height - how do you recommend building it?
I want to lose as little height as possible.
Considering water-borne underfloor heating.

 

[justusandersson]

If the ceiling is low, it may be suspected that the subframe/floor joists are not dimensioned for the loads that occur in regular residential areas. What do the trusses look like and when was the house built?

 

[bompa]

Built in 1899 and there was residential space up there. In 1926 it was removed. We have removed 18 tons of debris so the load-bearing capacity is likely there. Are the floor beams solid every meter?

 

[justusandersson]

It feels reassuring. I would still like to see a section through the attic to be able to provide some useful input.

 

[bompa]

Is it possible with pictures?

 

[justusandersson]

Yes, although drawings that can be measured are always best.

 

[KnockOnWood]

Since the ceiling height is low, how do you recommend building it?

How high is it now?
A sectional drawing says more than 53 words