What insulation adds in WC2H

69.2 → 75.2

Rating, now → potential

+6.0

Average uplift

£128

Avg saving / yr

1487

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 1487 certificates in WC2H, the current rating of 69.2 could rise to about 75.2 out of 100. The estimated annual heating cost averages £495 now, and about £366 after the recommended work – an estimated saving of roughly £128 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) – 45.0%
System built, as built, insulated (assumed) – 17.5%
Average thermal transmittance 0.35 W/m?K – 10.0%

Recorded as having no wall insulation: 50.0%.

Roofs

(another dwelling above) – 62.5%
(other premises above) – 12.5%
Pitched, no insulation (assumed) – 7.5%

Recorded as having no roof insulation: 10.0%.

Glazing

Fully double glazed – 45.0%
Single glazed – 15.0%
Partial secondary glazing – 15.0%

Main heating

Boiler and radiators, mains gas – 45.0%
Community scheme – 27.5%
Boiler and radiators, electric – 7.5%

Which streets need it most

See the streets in WC2H with the highest share of homes rated band D or below.

Leakiest streets in WC2H

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