What insulation adds in SE28

72.0 → 80.3

Rating, now → potential

+8.2

Average uplift

£49

Avg saving / yr

14723

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 14723 certificates in SE28, the current rating of 72.0 could rise to about 80.3 out of 100. The estimated annual heating cost averages £348 now, and about £299 after the recommended work – an estimated saving of roughly £49 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) – 35.0%
Timber frame, as built, insulated (assumed) – 23.8%
Cavity wall, as built, no insulation (assumed) – 10.0%

Recorded as having no wall insulation: 12.5%.

Roofs

(another dwelling above) – 27.5%
Pitched, 100 mm loft insulation – 15.0%
Pitched, insulated (assumed) – 10.0%

Recorded as having no roof insulation: 1.2%.

Glazing

Fully double glazed – 90.2%
Single glazed – 4.9%
Mostly double glazing – 4.9%

Main heating

Boiler and radiators, mains gas – 62.5%
Electric storage heaters – 16.2%
Community scheme – 10.0%

Which streets need it most

See the streets in SE28 with the highest share of homes rated band D or below.

Leakiest streets in SE28

Keep exploring

In this area

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