What insulation adds in SE18

70.3 → 78.3

Rating, now → potential

+8.1

Average uplift

£107

Avg saving / yr

44533

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 44533 certificates in SE18, the current rating of 70.3 could rise to about 78.3 out of 100. The estimated annual heating cost averages £499 now, and about £392 after the recommended work – an estimated saving of roughly £107 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) – 32.5%
Cavity wall, as built, insulated (assumed) – 20.0%
Cavity wall, filled cavity – 12.5%

Recorded as having no wall insulation: 42.5%.

Roofs

(another dwelling above) – 27.5%
(other premises above) – 15.0%
Pitched, no insulation (assumed) – 10.0%

Recorded as having no roof insulation: 15.0%.

Glazing

Fully double glazed – 80.0%
Single glazed – 15.0%
Mostly double glazing – 5.0%

Main heating

Boiler and radiators, mains gas – 67.5%
Community scheme – 22.5%
Room heaters, electric – 5.0%

Which streets need it most

See the streets in SE18 with the highest share of homes rated band D or below.

Leakiest streets in SE18

Keep exploring

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