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UK insulation calculator

Home Insulation Cost Calculator UK 2026

Estimate loft quilt or cavity wall insulation using current UK benchmarks and postcode-aware regional pricing.

Enter a postcode to set the cost region automatically.

Estimated insulation budget

£652 – £1,019

Typical planning estimate £815. Suitability surveys, damp remedial work and unusual access can add cost.

Benchmarks: Checkatrade 2026 loft and cavity wall insulation guides. Regional weighting is a UK Home Costs modelling assumption. Compare costs by property type → · Full guide → · Sources →
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Home Insulation planning toolBuilt from dated UK benchmarks with modelling assumptions kept separate. Data review: 1 September 2026.