What insulation adds in HA6

63.7 → 76.1

Rating, now → potential

+12.4

Average uplift

£290

Avg saving / yr

8904

Certificates

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 8904 certificates in HA6, the current rating of 63.7 could rise to about 76.1 out of 100. The estimated annual heating cost averages £937 now, and about £647 after the recommended work – an estimated saving of roughly £290 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) – 27.5%
Solid brick, as built, no insulation (assumed) – 25.0%
Cavity wall, as built, no insulation (assumed) – 25.0%

Recorded as having no wall insulation: 52.5%.

Roofs

(another dwelling above) – 42.5%
Pitched, 100 mm loft insulation – 10.0%
Pitched, no insulation (assumed) – 7.5%

Recorded as having no roof insulation: 7.5%.

Glazing

Fully double glazed – 85.2%
Single glazed – 7.4%
Mostly double glazing – 7.4%

Main heating

Boiler and radiators, mains gas – 75.0%
Room heaters, electric – 10.0%
Electric storage heaters – 5.0%

Which streets need it most

See the streets in HA6 with the highest share of homes rated band D or below.

Leakiest streets in HA6

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