What insulation adds in TN14

55.1 → 76.7

Rating, now → potential

+22.1

Average uplift

£444

Avg saving / yr

248

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 248 certificates in TN14, the current rating of 55.1 could rise to about 76.7 out of 100. The estimated annual heating cost averages £1341 now, and about £898 after the recommended work – an estimated saving of roughly £444 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

Cavity wall, as built, no insulation (assumed) – 42.5%
Solid brick, as built, no insulation (assumed) – 25.0%
Cavity wall, as built, insulated (assumed) – 12.5%

Recorded as having no wall insulation: 70.0%.

Roofs

Pitched, no insulation (assumed) – 17.5%
Pitched, 150 mm loft insulation – 15.0%
Pitched, 250 mm loft insulation – 12.5%

Recorded as having no roof insulation: 22.5%.

Glazing

Fully double glazed – 84.0%
Mostly double glazing – 8.0%
Partial double glazing – 4.0%

Main heating

Boiler and radiators, mains gas – 75.0%
Boiler and radiators, oil – 10.0%
Electric storage heaters – 5.0%

Which streets need it most

See the streets in TN14 with the highest share of homes rated band D or below.

Leakiest streets in TN14

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