Floor Insulation & Draught-Proofing
What it is:
Insulation fitted beneath suspended timber floors, plus simple sealing of gaps around windows, doors, skirting boards, and floorboards.
How it works:
Cold air moves through gaps you often can’t even feel day-to-day, and heat is lost downward through an uninsulated floor just as it is through walls and roofs. Both are quick, low-cost fixes.
Key benefits:
- Among the cheapest upgrades available, often with a payback of just a few years
- Noticeably reduces draughts and cold floors
- A sensible first step for homes not yet ready for bigger works
What it costs:
Floor insulation typically £1,200–£4,500 depending on floor area and access; draught-proofing typically £100–£300 for a whole house.
Is it right for your home?
Floor insulation applies mainly to suspended timber floors
(common in older homes) rather than solid concrete floors. Draught-proofing suits virtually
every home and is often worth doing regardless of what else you have planned.