If you’re considering introducing new forms of heat source technology to your builds, one option is to continue with your usual fabric specification and introduce air source heat pumps.
This could be particularly relevant for larger sites, which begin after the Approved Document L (ADL) transition period ended in June 2023, as planning further ahead will allow more time for design work to account for the alternative technology. It also gives supply chains more of an opportunity to adapt and allows more time for products to become available in the required quantities.
Below is an example ADL-compliant recipe*, showing one way this approach could be applied:
5 BED DETACHED, 3 WET ROOMS, 192m², 5 OCCUPANTS
Fabric | Openings | Heating | Ventilation | Renewables |
|---|---|---|---|---|
ROOF INSULATION | WINDOWS | HEATING TYPE | AIR PERMEABILITY | PHOTOVOLTAIC PANELS |
500mm Loft Roll 44 | Double Glazed | Gas + Cylinder - | 1.00 2.25 2.5 4.00 | None |
EXTERNAL WALLS | DOORS | HEATING CONTROLS | VENTILATION SYSTEM | WASTE WATER HEAT RECOVERY |
100mm Supafil® 34 | 1.90W/m²K | Time & Temperature Zone Control | System 1- | None |
PARTY WALL INSULATION | ||||
None | ||||
FLOOR INSULATION | ||||
0.11W/m²K | ||||
LINTELS | ||||
Thermally broken |
*Example recipes have been produced prior to the release of the latest SAP software and are intended for illustrative purposes only. These will be updated when the new software is released.