Plywood over tile floor in porch

[Michaelsf90]

We have bought some new flooring for the porch. The vinyl click system flooring. The porch is an extension of the bay window to the corner of the house. I was planning on putting some plywood down and then I have underlay for the vinyl click and then the flooring on top. Is it ok to screw the plywood down to the tile floor. It's not an easy job but I want to make sure it doesnt come up or is plywood over tile a no go

 

[foxhole]

Just lay on thick underlay, ply just adds another layer to pick up damp.

 

[Michaelsf90]

I have some 1mm foil backed underlay specifically for lvt flooring

 

[phatboy]

I have some 1mm foil backed underlay specifically for lvt flooring

You're good to go then!

 

[Michaelsf90]

The tiles arent bang on level. I'm gonna try and fill in the grout lines to make it smoother and see how it ends up

 

[johnny2007]

Use levelling compound, in a small area like that it's very easy to do.
Then whatever flooring you want.

 

[freddiemercurystwin]

I like the tiles, they'd probably clean up lovely.