Looking for a top-quality underlay that can be used with both vinyl flex and alpha click vinyl floors? Look no further than Quick-Step’s Vinyl Transit Underlay! This underlay is 1.2mm thick and provides up to 21db of sound reduction, making it perfect for use in any room. Additionally, it includes a Damp Proof Membrane (DPM) back, making it suitable for use with underfloor heating. Plus, it’s also suitable for wood and concrete sub floors. So whether you’re looking for an underlay that can be used with underfloor heating or one that will help reduce noise levels, Quick-Step’s Vinyl Transit Underlay is the perfect choice!