The Whole House Approach for Older and Traditional Buildings
Older buildings (usually taken as pre 1919) have solid walls and perform in a different way to modern ones. The building fabric is typically 'breathable', and the use of some modern building materials limits or prevents vapour transfer, results in condensation and consequently reduces thermal performance. Condensation can also damage building fabric and negatively affect living conditions. The 'whole house' approach considers buildings in the round and accepts that older buildings need to breathe. Individual energy efficiency measures (double-glazing on its own, for instance) are not effective. Making our older and traditional buildings perform to their best of their ability is a key part of reducing carbon consumption, but measures must take into account building physics.
Why the contribution is important
The principle of tackling the retrofit of pre 1919 buildings based on the way they perform forms part of the British Standards Institute's Retrofit Standards Framework and is also found in
- PAS 2035:2019 Retrofitting dwellings for improved energy efficiency. Specification and guidance.
- PAS 2030:2019 Specification for the installation of energy efficiency in existing dwellings and insulation in residential park homes (which together with PAS 2035 replaces PAS 2030:2017).
by antonygibb on February 14, 2021 at 07:37PM