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What is the best cavity wall insulation?

A commercial recommendation prompt. We size how many people ask ChatGPT this from real search demand, then run it through ChatGPT to see which websites it recommends.

Est. people asking / mo
2.3K
CPC
$1.68
Total est. value / mo
$235
Common ways people ask this (15)
  • What is the best cavity wall insulation for homes?
  • What is the best cavity wall insulation for older houses?
  • What is the best cavity wall insulation for new builds?
  • What is the best cavity wall insulation for cold climates?
  • What is the best cavity wall insulation for damp-prone walls?
  • What is the best cavity wall insulation for energy efficiency?
  • What is the best cavity wall insulation for soundproofing?
  • What is the best cavity wall insulation for existing walls?
  • What is the best cavity wall insulation for retrofitting?
  • What is the best cavity wall insulation for budget projects?
  • What is the best cavity wall insulation for long-term performance?
  • What is the best cavity wall insulation for fire resistance?
  • What is the best cavity wall insulation for moisture control?
  • What is the best cavity wall insulation with the highest R-value?
  • What is the best cavity wall insulation for environmentally friendly homes?

What ChatGPT actually answered

The 5 times we asked ChatGPT this, each answer verbatim. The leaderboard below aggregates all 5 runs.

You: What is the best cavity wall insulation?
ChatGPT:
  1. energy-savingtrust.org.uk
  2. gov.uk
  3. citizensadvice.org.uk
  4. bre.co.uk
  5. nhbc.co.uk
  6. insulationgo.co.uk
  7. kingfisher-insulation.co.uk
  8. instroup.com
  9. cavitytherm.co.uk
  10. woolinsulation.org
  11. metisinsulation.com
  12. knaufinsulation.co.uk
  13. rockwool.com
  14. celotex.co.uk
  15. xtratherm.ie
  16. soprema.co.uk
  17. recticelinsulation.com
  18. isover.co.uk
  19. arcelormittal.com
  20. ecowool.co.uk

Websites ChatGPT recommends for this prompt

Aggregated across 5 runs (min 2/5 appearances). Estimated visits split the prompt's demand by rank. Sites matching the prompt's own brand are marked branded and excluded from the leaderboard.

Arrows show each site's rank change since Aug 2026.

RankWebsiteEst. visits / mo
1 ▲4 gov.uk 45
2 ▲1 energysavingtrust.org.uk 27
3 ▼2 checkatrade.com 18
4 ▲10 knaufinsulation.co.uk 12
5 ▲5 rockwool.com 9
6 ▲2 thegreenage.co.uk 7
7 ▲2 britishgas.co.uk 5
8 ▼2 nhbc.co.uk 4
9 new sse.co.uk 3
10 ▲6 eonenergy.com 2
11 new edfenergy.com 2
12 ▼1 trustmark.org.uk 1
13 new insulationhub.co.uk 1
14 new superglass.co.uk 1
15 ▼8 homebuilding.co.uk 1
16 ▲4 celotex.co.uk 1
17 new citizensadvice.org.uk 0
18 new nesta.org.uk 0
How is this estimated?

ChatGPT doesn't publish prompts, so we don't show logged conversations. We measure real demand for this topic from Google search volume, scale it to ChatGPT's user base (on average about 1 ChatGPT user for every 8 Google searchers, a ratio that varies by topic), and run the prompt through ChatGPT 5 times to record which websites it recommends and in what order. Estimated visits split that demand across the recommended sites by a click-through-by-rank curve. Every number is a modeled estimate, not measured analytics. Full methodology →