What insulation adds in DA7

62.5 → 80.8
Rating, now → potential
+18.3
Average uplift
£239
Avg saving / yr
12240
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 12240 certificates in DA7, the current rating of 62.5 could rise to about 80.8 out of 100. The estimated annual heating cost averages £749 now, and about £510 after the recommended work – an estimated saving of roughly £239 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) – 70.0%
  • Cavity wall, as built, insulated (assumed) – 10.0%
  • Cavity wall, filled cavity – 7.5%

Recorded as having no wall insulation: 77.5%.

Roofs

  • Pitched, 100 mm loft insulation – 37.5%
  • Pitched, no insulation (assumed) – 15.0%
  • Pitched, 200 mm loft insulation – 15.0%

Recorded as having no roof insulation: 15.0%.

Glazing

  • Fully double glazed – 96.0%
  • Multiple glazing throughout – 4.0%

Main heating

  • Boiler and radiators, mains gas – 95.0%
  • Room heaters, mains gas – 2.5%
  • Electric storage heaters – 2.5%

Which streets need it most

See the streets in DA7 with the highest share of homes rated band D or below.

Leakiest streets in DA7

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In this area

Biggest average savings nearby

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