ARC
Technical information
We pride ourselves on a highly efficient building with low embodied carbon.
The table below gives technical performance indicators to show how our ARC buildings compare to standard or traditionally constructed buildings, as well as requirements for Passivhaus.
| Current UK regulations
L1A & L2A 2013 (2016 amendments) |
Passivhaus requirements | Green Unit | |
| Floor insulation | 0.25W/m²K (dwellings)
0.25W/m²K (non-dwellings) |
<0.15W/m²K | 0.184W/m²K |
| Wall insulation | 0.30W/m²K (dwellings)
0.35W/m²K (non-dwellings) |
<0.15W/m²K | 0.167W/m²K |
| Roof insulation | 0.20W/m²K (dwellings)
0.25W/m²K (non-dwellings) |
<0.15W/m²K | 0.167W/m²K |
| Windows & roof windows | 2.0W/m²K (dwellings)
2.2W/m²K (non-dwellings) |
<0.8W/m²K | Fakro P5 – 0.97W/m²K
Glazed end units – 1.2W/m²K |
| Glazed doors | 2.0W/m²K (dwellings)
2.2W/m²K (non-dwellings) |
<0.8W/m²K | Nordan doors – 1.2W/m²K |
| Air quality | Medium | High, filtered with MVHR | High, filtered with MVHR |
Notes
See further information including information about U Values in Building Regulations Part L2A (non-dwellings) on the Planning Portal.