Underfloor Requirements Type of Underfloor: The following are suitable bases for laying Topflor: - V100 panels - Old flooring such as ......PVC (if stuck down securely) ......Wooden floors ......Ceramics ......Linoleum ......Thin pile carpet ......Needle felting - Cement flooring - (max. residual humidity 2.0 CM %) - Anhydrite and anhydrite screed - (max. residual humidity 0.3 CM %)* - Mastic asphalt - (without measuring after cooling)* - Magnesium screed - (max. residual humidity 3.0 CM %)* The following are unsuitable bases for laying Topflor:: - Long-pile, think carpets - (too soft, need to be removed) - Magnesium oxychloride flooring - (too much residual humidity) *Without a surveyor's report on the residual humidity, the manufacturer cannot recognize a complaint. Next - Pretreatment of Underfloor