What insulation adds in EC1Y

74.2 → 77.9

Rating, now → potential

+3.8

Average uplift

£64

Avg saving / yr

2130

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 2130 certificates in EC1Y, the current rating of 74.2 could rise to about 77.9 out of 100. The estimated annual heating cost averages £346 now, and about £282 after the recommended work – an estimated saving of roughly £64 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

System built, as built, no insulation (assumed) – 35.0%
Solid brick, as built, no insulation (assumed) – 13.8%
Cavity wall, as built, no insulation (assumed) – 6.2%

Recorded as having no wall insulation: 55.0%.

Roofs

(another dwelling above) – 57.5%
(other premises above) – 12.5%
Average thermal transmittance 0.20 W/m²K – 7.5%

Recorded as having no roof insulation: 7.5%.

Glazing

Fully double glazed – 47.1%
Single glazed – 44.1%
Partial double glazing – 5.9%

Main heating

Boiler and radiators, mains gas – 55.0%
Community scheme – 30.0%
Electric storage heaters – 3.8%

Which streets need it most

See the streets in EC1Y with the highest share of homes rated band D or below.

Leakiest streets in EC1Y

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