Can I insulate between original floorboards and engineered

[BertyBurgleBurp]

Ok here goes... I have a Victorian wood floor, joists on brick courses. Not enough space for crawling , but ventilation seems ok. Then floorboards, a bit tatty, has been cut about for central heating electrics etc. it's cold so I want to insulate.
Should I lay insulation, ( what type )
Then secret screw on an engineered floor ( with room for expansion ) . I want to screw it down because the floor is not that level in places.

Many thanks, all advice greatly appreciated

 

[AronSearle]

You mean lay the insulation onto the floorboards, rather than pull them up and go in-between the joists?

Don't see why not if you don't mind a step.

But the top floor would be better floated, maybe lay down some plywood first to level out the floor, then some rigid insulation.

 

[BertyBurgleBurp]

I am considering pulling the floor up, it will be more disruptive but a better finish I think...... But if I go for floating I'll stick some ply down like you say , hopefully it'll be less boingy

 

[BertyBurgleBurp]

Also , is the rigid insulation good and warm? It's a cold house 3 outside walls and a draighty floor brrrr

 

[freddiemercurystwin]

Been posted loads of times eg //www.diynot.com/forums/floors-stairs-lofts/insulating-ground-floor.334961/#2492345

To not lift the existing boards is just lazy.

Others will be able to advise regarding your engineered boards.