BBC tells us " Polystyrene insulation appeared to swell". Common sense tells us the floor floated on the polystyrene.
With increasing depths of insulation this is maybe a time to remind our clients and if necessary their architects that 70mm of sand/cement or concrete screed is required for every 100mm depth of insulation if floatation under burst pipe conditions is to be avoided.
With increasing depths of insulation this is maybe a time to remind our clients and if necessary their architects that 70mm of sand/cement or concrete screed is required for every 100mm depth of insulation if floatation under burst pipe conditions is to be avoided.