What insulation adds in DA18

65.9 → 74.8

Rating, now → potential

+8.9

Average uplift

£87

Avg saving / yr

2664

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 2664 certificates in DA18, the current rating of 65.9 could rise to about 74.8 out of 100. The estimated annual heating cost averages £518 now, and about £431 after the recommended work – an estimated saving of roughly £87 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) – 57.5%
Cavity wall, filled cavity – 20.0%
Cavity wall, as built, no insulation (assumed) – 7.5%

Recorded as having no wall insulation: 65.0%.

Roofs

(another dwelling above) – 42.5%
Flat, limited insulation – 17.5%
Pitched, 250 mm loft insulation – 5.0%

Recorded as having no roof insulation: 7.5%.

Glazing

Fully double glazed – 81.8%
Some double glazing – 9.1%
Mostly double glazing – 9.1%

Main heating

Boiler and radiators, mains gas – 95.0%
Community scheme – 5.0%

Which streets need it most

See the streets in DA18 with the highest share of homes rated band D or below.

Leakiest streets in DA18

Keep exploring

In this area

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