What insulation adds in RM4

59.0 → 77.2

Rating, now → potential

+19.9

Average uplift

£371

Avg saving / yr

263

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 263 certificates in RM4, the current rating of 59.0 could rise to about 77.2 out of 100. The estimated annual heating cost averages £1165 now, and about £795 after the recommended work – an estimated saving of roughly £371 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, as built, no insulation (assumed) – 15.0%
Cavity wall, filled cavity – 10.0%

Recorded as having no wall insulation: 57.5%.

Roofs

Pitched, 100 mm loft insulation – 20.0%
Pitched, no insulation (assumed) – 12.5%
Pitched, 250 mm loft insulation – 10.0%

Recorded as having no roof insulation: 15.0%.

Glazing

Fully double glazed – 86.4%
Some secondary glazing – 4.5%
Mostly double glazing – 4.5%

Main heating

Boiler and radiators, mains gas – 70.0%
Room heaters, electric – 7.5%
Boiler and radiators, oil – 7.5%

Which streets need it most

See the streets in RM4 with the highest share of homes rated band D or below.

Leakiest streets in RM4

Keep exploring

In this area

Leakiest streets in RM4 Leaky The leakiest streets here