What insulation adds in OX28, Witney
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 3987 certificates in OX28, the current rating of 69.1 could rise to about 82.0 out of 100. The estimated annual heating cost averages £565 now, and about £449 after the recommended work – an estimated saving of roughly £116 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
- Cavity wall, as built, insulated (assumed) – 50.9%
- Cavity wall, filled cavity – 14.3%
- Timber frame, as built, insulated (assumed) – 5.7%
Recorded as having no wall insulation: 13.0%.
Roofs
- Pitched, 100 mm loft insulation – 12.8%
- (another dwelling above) – 12.2%
- Pitched, insulated (assumed) – 10.6%
Recorded as having no roof insulation: 3.5%.
Glazing
- Fully double glazed – 95.8%
- Partial double glazing – 1.0%
- Mostly double glazing – 1.0%
Main heating
- Boiler and radiators, mains gas – 76.4%
- Room heaters, electric – 9.5%
- Electric storage heaters – 8.4%
Which streets need it most
See the streets in OX28 with the highest share of homes rated band D or below.
Leakiest streets in OX28