Floor insulation
Floor insulation saves £40 to £100 per year but costs £700 to £2,500 depending on floor type. Payback is 12 to 25 years, so it's not the highest-priority retrofit measure. Prioritize loft and cavity wall insulation first.
Cornerstone guide
Is floor insulation worth it?
The 2026 UK cost and savings breakdown. Floor insulation costs £700 to £2,500 depending on floor type and saves £40 to £100 per year. When it makes sense, which floor type you have, and when to skip it.
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Suspended floor insulation
How to insulate a timber floor. Cost, materials, DIY vs professional install, and when to insulate from above vs below.
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Concrete floor insulation
How to insulate a solid slab floor. Costs £2,500 to £6,000 for a whole floor. When to insulate and whether it's worth the disruption.
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Solid floor insulation explained
What solid floor insulation means, how it differs from suspended floors, and when you need it for your UK home.
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Underfloor insulation cost
2026 UK cost breakdown by floor type. £700 to £1,500 per room for suspended timber or £2,500 to £6,000 for concrete.
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