Floor Structure in Old House

[Dissonans]

I have an older house where I have removed the old interior floor to replace insulation, and then I plan to screw-glue chipboard flooring on top. The old joists are extremely irregularly spaced and I have ceiling height, so I plan to screw 45x70 with cc 600 perpendicularly to the old joists to be able to lay the chipboard flooring (this way I can both level the floor and increase insulation).

Now to the question:
- Will the floor be more stable if the 45x70 joists are recessed and screw-glued, or is it enough to glue and screw shims made of unit?

 

[Workingclasshero]

You should at least plug into the new reglarna.
But I might be misunderstanding, won't the floor be very high?
Can you reinforce the beams while you regel and insulate downwards instead?

 

[hempularen]

Unsure if I understand. But you should not notch the old beams.

 

[Dissonans]

Previously, the floor had been leveled by shimming on a 2” beam along the floor joists and on that a 34 mm wooden floor was laid (total 85 mm). My plan is to replace this (I've also changed the insulation) with 70 mm beams and 22 mm chipboard flooring (total 92 mm) perpendicular to the floor joists.

I don't see any other way to achieve cc60 for the chipboard and I understand your perspective on not notching the floor joists, which leaves two options:
1) Notch the 45x70 beam and screw-glue it to the floor joists. I think it will be a maximum of 5 mm to notch in a few cases.
2) Shim up instead with unit and also screw-glue the entire package.

 

[Dissonans]

Found something called a support shim that seems easy to use, but it can't be glued. Will the floor joists 45x70 be stable with support shims underneath and then screwed into the substrate?