UK external wall insulation calculator
External Wall Insulation Cost Calculator
Estimate an installed external wall insulation budget from current 2026 UK £150–£200 per m² guidance.
Enter a postcode to set the cost region automatically.
Estimated external wall insulation budget
£13,354 – £17,806Typical planning estimate £15,580. Current installed UK guidance is roughly £150–£200 per m², with a planning midpoint near £175 per m². Wall condition, finish and region are modelling assumptions; scaffolding and pipework changes can add cost.
Benchmark source: Checkatrade External Wall Insulation Cost 2026 UK guide, July 2026. Scaffolding, pipework alterations and major wall repairs may be separate. See sources →