Floor panel CETRIS® PDI is a two-ply panel used in dry floor technology. It consists of a 22 mm thick cement bonded CETRIS® particleboard glued to 12 mm insulating fibreboard (hardboard). The size is 1,220 x 610 mm (including the tongue) and it is 34 mm thick; it has a tongue and groove along the perimeter, the surface is smooth. The panels should be laid on a level surface area (ceiling structures, cladding). They are great for a quick and exact installation. They also spread spot-load stress over a larger area. Technical specification CETRIS® PDI floor panels are laid on wooden transport pallets, which enable forklift manipulation. The boards are secured with straps. CETRIS® PDI panels are protected against atmospheric influences by PE foil. Wrapping in PE foil, however, does not satisfy conditions for long-lasting exposure to atmospheric influences when stored in an open area. CETRIS® PDI panels must be stored in a sheltered dry area so that they do not get wet before laying (especially the fibreboard). When storing, CETRIS® PDI panels on the pallets can be stacked two layers high. The boards should be placed on the pallets when handled. They should be hand-carried in a vertical position. Floor structures with CETRIS® PDI panels CETRIS® PDI panels can be laid directly on the base - a ceiling structure or cladding. The base must be level, supporting and dry. In this way, a new load spreading and insulating layer only 34 mm thick can be made with a high load capacity and resistance against spot stress. If a higher structural height has to be achieved, or if the floor structure must reach a higher thermal resistance value, we recommend laying insulation boards under the CETRIS® PDI panels. Polystyrene based insulation boards (min. class EPS S 70), or boards with stone or mineral wool or fibreboards are suitable. However, they must always be designed for light floating floors. The maximum recommended thickness of the insulation board is 50 mm. The biggest cement bonded particleboard producer in Europe.

Floor loading capacity The loading capacity of CETRIS® PDI panels was determined by tests specified for light floor structures as per EN 13 810-1. The testing was performed in an acoustic chamber of the SCI (Zlfn branch) on 3.6 x 3.0 m samples. The floor was always laid on a 140 mm thick reinforced concrete ceiling structure. The test loading methods were as follows: • Concentrated load - action of a spot load 130 kg (260 kg) in a circular area 25 mm in diameter. The critical sag value under the loading arm is 3 mm. • Impact load - a 40 kg load was dropped from the height of 350 mm; the critical...

Without a feather on the longitudinal side Moisture of the base The maximum allowable specific moisture of the base: Insulation against moisture To eliminate transport of moisture into the thermal and sound insulation layer, this layer must be separated from the floor structure by a protective foil. This protection concerns mainly a support ceiling structure, which contains residual moisture or areas where increased penetration Laying CETRIS® PDI floor panels 1 Floating floors made with CETRIS® PDI are laid as a final layer after finishing «wet» building works (after finishing walls, plastering,...

Floor systems CETRIS® Cement-bonded particleboard The floor panels must be glued at a maximum relative air humidity of 80 % and a minimum room temperature of 5° C. The CETRIS® PDI panels must be in full contact with each other. Doorsillless floor transition 01 Dilatation section Schlüter DILEX 02 Doorsill link of the doorframe 03 Wooden base section under the doorframe 04 Wear layer 05 Floor panel CETRIS® PDI 06 Vapor barrier 07 Dilatation gap 15 mm 08 Ceiling structure Vertical cross-section When laying down the final panel, first cut it to the required length, then cut the tongue on the longitudinal...