Here at Luxury Flooring and Furnishings, we have an extensive range of engineered flooring underlay on offer, which come in a variety of different materials and thicknesses. The majority of underlay we stock is suitable for underfloor heating, however, please double check this in the product specifications.
If the room in which you are laying your engineered wood flooring is susceptible to moisture or damp rising from the subfloor, it is recommended you purchase an underlay which contains a damp proof membrane (DPM) that acts as a vapour barrier.
If you require an underlay which offers a good level of sound reduction, then look at the decibel rating in each product description - the higher the number, the more effective it will be. Underlay is also excellent for thermal insulation.