What insulation adds in E6

67.8 → 80.3

Rating, now → potential

+12.5

Average uplift

£195

Avg saving / yr

32970

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 32970 certificates in E6, the current rating of 67.8 could rise to about 80.3 out of 100. The estimated annual heating cost averages £619 now, and about £424 after the recommended work – an estimated saving of roughly £195 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) – 47.5%
Cavity wall, as built, insulated (assumed) – 17.5%
Timber frame, as built, insulated (assumed) – 10.0%

Recorded as having no wall insulation: 55.0%.

Roofs

(another dwelling above) – 17.5%
Pitched, 100 mm loft insulation – 12.5%
Pitched, no insulation (assumed) – 10.0%

Recorded as having no roof insulation: 15.0%.

Glazing

Fully double glazed – 85.7%
Single glazed – 9.5%
Mostly double glazing – 4.8%

Main heating

Boiler and radiators, mains gas – 82.5%
Community scheme – 10.0%
Electric storage heaters – 5.0%

Which streets need it most

See the streets in E6 with the highest share of homes rated band D or below.

Leakiest streets in E6

Keep exploring

In this area

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