PAVAROOM is an interior construction board for the cladding of roof slopes, ceilings, interior walls, eaves walls and the inside of exterior walls. The tongue and groove connections enable fast, continuous laying on structural timbers/rafters with a maximum centre-to-centre spacing of 80 cm. The double-sided coating enables use as a vapour barrier and airtight layer. An additional vapour barrier /airtight membrane is not required. Hence, up to 3 fewer work steps are required than with conventional gypsum plasterboards/gypsum fibreboards. With a weight of 7.20 or 13.20 kg/m² it is much lighter and is thus very easy to handle. At the same time PAVAROOM provides for additional thermal protection, heat protection and noise insulation. Airtight joints to adjacent building parts can be made with PAVAFIX WIN adhesive tape.