ABSTRACT

Acoustic plasterboard 0.25 Oriented strand board 0.13 Aerated concrete slab (500 kg/m3) 0.16 Outer leaf brick 0.77 Aluminium 237 Plasterboard 0.22 Asphalt (1700 kg/m3) 0.5 Plaster dense (1300 kg/m3) 0.5 Bitumen-impregnated fibreboard 0.05 Plaster lightweight (600 kg/m3) 0.16 Blocks (standard grade 600 kg/m3) 0.15 Plywood (950 kg/m3) 0.16 Blocks (solar grade 460 kg/m3) 0.11 Prefabricated timber wall panels (check

manufacturer) 0.12

Brickwork (outer leaf 1700 kg/m3) 0.84 Screed (1200 kg/m3) 0.41 Brickwork (inner leaf 1700 kg/m3) 0.62 Stone chippings (1800 kg/m3) 0.96 Dense aggregate concrete block 1800 kg/m3 (exposed)

1.21 Tile hanging (1900 kg/m3) 0.84

Dense aggregate concrete block 1800 kg/m3 (protected)

1.13 Timber (650 kg/m3) 0.14

Calcium silicate board (600 kg/m3) 0.17 Timber flooring (650 kg/m3) 0.14 Concrete general 1.28 Timber rafters 0.13 Concrete (heavyweight 2300 kg/m3) 1.63 Timber roof or floor joists 0.13 Concrete (dense 2100 kg/m3 typical floor)

1.4 Roof tile (1900 kg/m3) 0.84

Concrete (dense 2000 kg/m3 typical floor)

1.13 Timber blocks (650 kg/m3) 0.14

Concrete (medium 1400 kg/m3) 0.51 Cellular glass 0.045 Concrete (lightweight 1200 kg/m3) 0.38 Expanded polystyrene 0.034 Concrete (lightweight 600 kg/m3) 0.19 Expanded polystyrene slab (25 kg/m3) 0.035 Concrete slab (aerated 500 kg/m3) 0.16 Extruded polystyrene 0.035 Copper 390 Glass mineral wool 0.04 External render sand/cement finish 1 Mineral quilt (12 kg/m3) 0.04 External render (1300 kg/m3) 0.5 Mineral wool slab (25 kg/m3) 0.035 Felt – Bitumen layers (1700 kg/m3) 0.5 Phenolic foam 0.022 Fibreboard (300 kg/m3) 0.06 Polyisocyanurate 0.025 Glass 0.93 Polyurethane 0.025 Marble 3 Rigid polyurethane 0.025 Metal tray used in wriggly tin concrete floors (7800 kg/m3)

50 Rock mineral wool 0.038

Mortar (1750 kg/m3) 0.8