What insulation adds in KT6

65.0 → 76.2

Rating, now → potential

+11.2

Average uplift

£162

Avg saving / yr

18897

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 18897 certificates in KT6, the current rating of 65.0 could rise to about 76.2 out of 100. The estimated annual heating cost averages £570 now, and about £408 after the recommended work – an estimated saving of roughly £162 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) – 40.0%
Cavity wall, filled cavity – 17.5%
Cavity wall, as built, no insulation (assumed) – 12.5%

Recorded as having no wall insulation: 57.5%.

Roofs

(another dwelling above) – 52.5%
Pitched, 250 mm loft insulation – 7.5%
Pitched, insulated at rafters – 5.0%

Recorded as having no roof insulation: 7.5%.

Glazing

Fully double glazed – 66.7%
Single glazed – 8.3%
Partial double glazing – 8.3%

Main heating

Boiler and radiators, mains gas – 80.0%
Room heaters, electric – 7.5%
Electric storage heaters – 7.5%

Which streets need it most

See the streets in KT6 with the highest share of homes rated band D or below.

Leakiest streets in KT6

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