I was wondering if anyone knows the pros and cons of the above
underlays for engineered flooring. I plan to put down a floating floor
over concrete so I am looking for an underlay with a vapour barrier,
which both of the above have provide. However, the Timbermate is
described as a luxury rubber underlay with built in foil vapour barrier
whereas the Tuplex consists of two layers of polyethene vapour barrier
with flexible polystyrene granules sandwiched inbetween?

Many thanks,
Bob