Knauf Carbonzone loft insulation 100mm thick, Lenght 12.18, Width 1140mm. Area 13.89, R value (m2k/w) 2.25. Thermal conductivity (W/mK) 0.044 Was marked up as £5.00 at the front of the store, but at the back was marked up at £3.00
+ The 170mm is £3.00
# Earthwool zero carbon loft insulation.
# Made from recyled glass bottles.
# Thickness: 170mm.
# Size: 7030 x 1140mm.
# Coverage: 8.01 square metres