What insulation adds in W8

66.1 → 76.2

Rating, now → potential

+10.1

Average uplift

£300

Avg saving / yr

15907

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 15907 certificates in W8, the current rating of 66.1 could rise to about 76.2 out of 100. The estimated annual heating cost averages £910 now, and about £610 after the recommended work – an estimated saving of roughly £300 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) – 70.0%
Cavity wall, as built, insulated (assumed) – 10.0%
Cavity wall, as built, no insulation (assumed) – 7.5%

Recorded as having no wall insulation: 77.5%.

Roofs

(another dwelling above) – 52.5%
Flat, insulated (assumed) – 10.0%
Pitched, 100 mm loft insulation – 5.0%

Recorded as having no roof insulation: 12.5%.

Glazing

Single glazed – 43.5%
Fully double glazed – 39.1%
Partial double glazing – 8.7%

Main heating

Boiler and radiators, mains gas – 57.5%
Community scheme – 25.0%
Electric underfloor heating – 5.0%

Which streets need it most

See the streets in W8 with the highest share of homes rated band D or below.

Leakiest streets in W8

Keep exploring

In this area

Leakiest streets in W8 Leaky The leakiest streets here