Carpet City - FibreBoard - High Density - 5.5mm - Laminate/Wood Underlay - 10.03m2 Pack Insulating panels of natural wood fibre, designed to eliminate uneven floors. - On the level: As well as insulation, FibreBoard provides a level subfloor for the final floor covering, offering stable support and helping your floor last longer by smoothing out the most uneven areas. - Keep out the cold: The exceptional thermal insulation of FibreBoard is perfect for use on very cold subfloors such as cellars, to make your room feel so much cosier and comfortable. - Easy to fit: Made from traditional natural wood fibre, you’ll find FibreBoard really easy to line up, cut and fit – saving you a great deal of time and effort wherever you’re installing it.