Solid hardwood floor with UFH - on screed or battens?

[GaryChaplin]

Hi,

 

I have one downstairs room with solid timber floors. The whole ground floor was to be screeded with UFH before partition walls erected. However, after reading a little I'm not sure what to do in this one room. I'm using dried 25mm hardwood and have two options:

 

• Cement screed and glue boards

• Battens over insulation with UFH between. Nail and glue boards. 

 

Any advice on the better option?

Thanks,

Gary