What It Is
Floor insulation treats heat loss through the ground floor. For suspended timber floors it is usually fitted between the joists from below or by lifting boards; solid floors are assessed separately. Ventilation under the floor is kept so the timber stays dry.
Why It Matters
An uninsulated floor lets heat escape and draughts in. Treating the floor improves comfort in ground floor rooms and complements loft and wall insulation.
- Warmer ground floor rooms
- Fewer draughts at skirtings
- Complements wall and loft insulation
- Subfloor ventilation preserved
Who It's For
What Good Delivery Looks Like
Survey of floor type, void depth and ventilation
Airbricks and subfloor airflow kept clear
Pipework and cables protected
Evidence of coverage before boards are replaced
Interested in Floor and Underfloor Insulation?
Discuss floor insulation for your home. Get in touch to discuss your requirements or request a survey.
Exploring the North East Warm Homes Loan?
Lendology lists this type of work among the measures it may consider, subject to its own eligibility checks. WHNZ can survey and quote the work; you apply to Lendology independently. Registration opened 8 October 2026; full applications open 22 October 2026.
Other Services
Delivering a programme rather than a single property? See managed retrofit delivery. To check coverage, see the areas we serve, or read more about how Warm Homes Net Zero Ltd works.