Tile decoupling mat / anti-crack matting - uncoupling waterproof membrane rapid mat durable base roll for under tile 3.6mm
Anti Crack Decoupling Membrane Mat To Renovate New & Old Floor - Under Tiles | eBay
Durabase CI++ Decoupling Membrane From Elementshop
Uncoupling Membrane 30m² Roll | Tile Mountain
Decoupling Membrane Vario PRO Electric Underfloor Heating Uncoupling Membrane, Waterproofing, Polypropylene, Includes Kudos-Trading UK Next Working Day Prime delivery. (15m²) : Amazon.co.uk: DIY & Tools