What insulation adds in DA17
The realistic uplift
Each energy certificate lists the improvements an assessor recommends and the rating the home would reach if they were done. Averaged across 10998 certificates in DA17, the current rating of 65.7 could rise to about 75.7 out of 100. The estimated annual heating cost averages £595 now, and about £432 after the recommended work – an estimated saving of roughly £163 a year.
These are the register's own estimates, averaged across many homes; the figure for any one property depends on its fabric and how it is heated.
What the certificates say about the fabric
The most common construction descriptions recorded across these certificates. Percentages are of certificates where the field was recorded.
Walls
- Solid brick, as built, no insulation (assumed) – 42.5%
- Cavity wall, filled cavity – 25.0%
- Cavity wall, as built, insulated (assumed) – 12.5%
Recorded as having no wall insulation: 52.5%.
Roofs
- (another dwelling above) – 32.5%
- Pitched, 100 mm loft insulation – 15.0%
- Pitched, 150 mm loft insulation – 10.0%
Recorded as having no roof insulation: 15.0%.
Glazing
- Fully double glazed – 92.6%
- Single glazed – 7.4%
Main heating
- Boiler and radiators, mains gas – 77.5%
- Room heaters, electric – 12.5%
- Electric storage heaters – 5.0%
Which streets need it most
See the streets in DA17 with the highest share of homes rated band D or below.
Leakiest streets in DA17Keep exploring
Biggest average savings nearby
- What insulation adds in RM11 ~£463/yr average saving
- What insulation adds in TN14 ~£444/yr average saving
- What insulation adds in EC4Y ~£405/yr average saving
- What insulation adds in KT8 ~£391/yr average saving
- What insulation adds in N14 ~£379/yr average saving
- What insulation adds in RM4 ~£371/yr average saving
- What insulation adds in HA7 ~£342/yr average saving
- What insulation adds in CR3 ~£328/yr average saving