Show moreThe STRONGBOARD FL load-bearing layer is a 5 mm thin heat-conducting layer for our IDEAL dry construction underfloor heating system. It is used for tile coverings and floating laminate floors. The STRONGBOARD FL panels are glued to the heating elements, which are also fixed to the subfloor with the same adhesive (Rollfix ECO). STRONGBOARD FL is a polyester fiberboard made of aluminum-laminated fleece and thermoplastic binders with high tear and compressive strength. Its excellent thermal conductivity ensures that the heat from the underfloor heating system is quickly transferred into the room.