What insulation adds in RM13

59.5 → 78.8

Rating, now → potential

+19.4

Average uplift

£260

Avg saving / yr

14230

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 14230 certificates in RM13, the current rating of 59.5 could rise to about 78.8 out of 100. The estimated annual heating cost averages £781 now, and about £521 after the recommended work – an estimated saving of roughly £260 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) – 47.5%
Cavity wall, as built, no insulation (assumed) – 22.5%
Cavity wall, filled cavity – 10.0%

Recorded as having no wall insulation: 72.5%.

Roofs

Pitched, 100 mm loft insulation – 20.0%
Pitched, no insulation (assumed) – 17.5%
Pitched, 250 mm loft insulation – 7.5%

Recorded as having no roof insulation: 22.5%.

Glazing

Fully double glazed – 90.5%
Some double glazing – 4.8%
Mostly double glazing – 4.8%

Main heating

Boiler and radiators, mains gas – 95.0%
Room heaters, electric – 2.5%
Community scheme – 2.5%

Which streets need it most

See the streets in RM13 with the highest share of homes rated band D or below.

Leakiest streets in RM13

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