Full Loft Boarding + 270mm Insulation Top-Up
Original 100mm insulation laid badly between joists, exposed timber walkway down the centre, no usable storage. Heat loss measurable from upstairs landing — radiators ran constantly to compensate.
Raised sub-frame installed across full loft area, 270mm mineral wool topped beneath, 18mm structural-grade chipboard floor with central walkway. Customer reported a 19% drop in winter gas usage by month two.
32m² of usable, fully insulated storage. Heat retention restored to current Building Regs standard.
