Hi all
Planning a new build in sunny Scotland, semi passivhaus, just wait for the warrant to be approved.
There bed bungalow facing south west looking over a loch.
House spec, floor, walls and roof U value of 0.1.
Double glazed U value 1.2. UFH throughout. 3.2 kW solar PV, with immersion diverting. Thermal store heated by PV only to provide preheated water to Atag Combi boiler with full weather compensation. MVHR. Air tightness looking for around 1 m3/m2.
Did the maths looking at payback for triple glazing and got pay back periods of around 40 years. Due to the low heat demand.
