Engineered flooring

[chamfer]

I am about to lay an oak engineer floor down on top of some 4mm ply.
The ply is going down on top of soft wood t&g flooring.

Would it be better to screw it or nail it?

thanks in advance

Chamfer

 

[foxhole]

WHY ? What do you hope to achieve with 4mm ply?

 

[chamfer]

I am about to lay an oak engineer floor down on top of some 4mm ply.
The ply is going down on top of soft wood t&g flooring.

Would it be better to screw it or nail it?

thanks in advance

Chamfer

Good question A better a surface for my floor to go down and to even out any unevenness

 

[foxhole]

4mm will follow any undulation , needs to be much thicker if floor is uneven.

 

[chamfer]

4mm will follow any undulation , needs to be much thicker if floor is uneven.

What would you recommend

 

[foxhole]

How bad is the floor?

 

[chamfer]

Its not to bad just got a few cupped boards

 

[foxhole]

Are you running at 90 degree to existing ? Underlay ?