RECOMMENDATION FOR INSTALLATION sheet must be allowed to relax for 24 hours in room temperature between 18°C and 27°C prior to installation. Vinyl rolls are suitable for laying on any surface such as concrete, steel wooden floors etc. provided the sub-floor is even, hard and dry. Damp floors should be dried before the commencement of laying. Before installation, the base floor must be thoroughly clean, dry and free from grease & grit. Wonderfloor recommends use of Fevicol SR 998, Fevicol SR 505 or any other equivalent rubber/acrylic/water based adhesive of similar type.