U-VALUES

Roof  Slates 50mm Air space Breathable Membrane 250mm Cellulose 50mm Gyproc Thermal Board Super & skim U = 0.13 W/m2 K

Walls Rendered – 13mm plaster finish 100mm dense concrete block 200mm cellulose between Masonite Beams 9mm Panelvent sheathing Breathable Membrane 50mm ventilated cavity 20mm Lime Render U = 0.16 W/m2 K

Walls Stone – Plaster finish 100mm dense concrete block 120mm [70+50] Kooltherm TW50 25mm cavity 135mm – 150mm stone U = 0.16 W/m2 K

Walls Basement – 360mm dense concrete 80mm mineral wool against the blockwork 50 mm mineral wool between s.w. studs Plaster on 13 mm plasterboard U = 0.22 W/m2 K

Windows Timber frame 24mm Double glazing 4 – 16 – 4 low E Argon filled U = 1.4 W/m2 K

Floors Basement [solid]– 75mm screed 100mm EPS DPM 150mm concrete 150mm hardcore U= 0.21 W/m2 K

Floors Ground Floor [suspended]– 50mm Stone flags 75mm screed with heating pipes 100mm dense blocks on concrete beam 38mm battens 90mm [40+50] Thermopitch TP10 U= 0.2 W/m2 K

AIR TIGHTNESS

Target 1m³/m²/hr @ 50Pa
with an expectation to achieve less that 2m³/m²/hr @ 50Pa.