Underlay for splash areas for wooden floors? Help, advice, information, answers and tips on all types of flooring from laminate and carpet to timber and vinyl

[Paintdevil]

I want to install wooden floors (already pre-sealed engineered or solid wood boards) in my kitchen. The underlay I want to use is Unifelt green fibreboard, but the spec says it is no good for splash areas. Is there anything I can put between the underlay and the floorboards, or is there any other underlay I can use (must be 7mm total thickness to match the fibreboard).

Thanks