Basement walls Thermal Floors Acoustic Floors Walls Cavity closers Pitch roofs Inverted flat roofs Flat roof/car park decks Other Project References Physical Properties Building Regulations Part L - Thermal Part E - Acoustic The CODE for sustainable homes Cellecta & the Environment Further Information UNICLOSER XCC UNICLOSER XCC cavity closers incorporate an integral rigid dpc and high performance, closed - cell, zero ODP extruded polystyrene insulation core. Nine types are available to suit specific construction details, each one designed to eliminate cold bridging around window and door openings.   Benefits Eliminates cold bridging No need to return blockwork Effective DPC Flexible applications Environmentally friendly Compatible with all types of cavity wall insulation Quick and easy to install Proven solution       UNICLOSER XCC applications Physical Properties of UNICLOSER XCC