Still in the Sales cycle for my old house (3rd try!) but while I'm waiting I'll be doing site clearing work next month and I want to take a moment here to make final decisions on my wall build up as this moves the locations of my floor penetrations by 100mm.
Target U Values are as follows:
1. External walls U value = 0.1 W/m2K
2. Sloped Roof U value = 0.1 W/m2k
3. Floor U value = 0.07 W/m2k
This is based on PHPP calculations, they are more strict as my house is quite sm