What insulation adds in WC2B

72.7 → 78.4

Rating, now → potential

+5.7

Average uplift

£98

Avg saving / yr

831

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 831 certificates in WC2B, the current rating of 72.7 could rise to about 78.4 out of 100. The estimated annual heating cost averages £435 now, and about £336 after the recommended work – an estimated saving of roughly £98 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) – 27.5%
Cavity wall, as built, insulated (assumed) – 15.0%
Cavity wall, filled cavity – 12.5%

Recorded as having no wall insulation: 42.5%.

Roofs

(another dwelling above) – 75.0%
Flat, insulated (assumed) – 7.5%
(other premises above) – 7.5%

Recorded as having no roof insulation: 7.5%.

Glazing

Fully double glazed – 68.4%
Single glazed – 15.8%
Some double glazing – 5.3%

Main heating

Boiler and radiators, mains gas – 52.5%
Community scheme – 30.0%
Boiler and underfloor heating, mains gas – 7.5%

Which streets need it most

See the streets in WC2B with the highest share of homes rated band D or below.

Leakiest streets in WC2B

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