Underlay over parquet

Ill be doing a westex carpet for a good customer pretty soon and her lounge is 90% solid wood parquet, is there a special underlay needed to allow it to breath? Is there a 'fancy felt' ttpe required?

Ive never laid over parquet before as its always been removed but she wants to keep it down incase later on down the yrs she wants a change.

 

Thats what I put

 

...with the added 'e'

 

Cloud 9 can go over parquet. Any underlay can if you put down paper felt first


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