Group D · Floors, basements and underfloor heating
Insulated floor screed
Insulation plus screed, ready for underfloor heating.
Typical price
Insulated floor screed
£60–£110 per m²
Solid floor insulation with new screed
Ask for a quoteBefore grants · updated 11 October 2026 · a survey confirms the final figure.
- Best for
- Kitchen and ground-floor refits
- Guarantee or standard
- Manufacturer's guarantee, confirmed in your quote
- Time on site
- A suspended floor is typically done room by room over a few days; working from the void below can be quicker where access allows.
- Typical price
- £60–£110 per m²
What it is
What is insulated floor screed?
Insulation plus screed, ready for underfloor heating.
Best for: Kitchen and ground-floor refits.
Build-up
Insulated solid floor
Room
Ground
- 1Floor finish
- 2New screed or floating floor
- 3PIR or XPS boards
- 4Damp-proof membrane
- 5Concrete slab
Who it suits
Which homes is insulated floor screed suitable for?
Is my home suitable?
Pick your property type for a straight answer on insulated floor screed.
Guidance only — every home is different, and a survey confirms what suits yours.
Houses
- Detached house
- Semi-detached house
- End-of-terrace
- Mid-terrace
- Townhouse
- Mews house and cottage
- Detached bungalow
- Semi and terraced bungalow
- Chalet and dormer bungalow
- Period home
- 1930s home
- Post-war and ex-council house
- Non-traditional / system-built
- Listed building or conservation area
- Farmhouse, barn conversion or rural home
- New build or self-build
- Park and mobile home
Flats and blocks of flats
Commercial and public buildings
Usually suitable Depends — a survey confirms
Materials and brands
What we use
Insulation plus screed ready for underfloor heating.
Insulation brands we work with
- Knauf Insulation (Earthwool, Supafil blown)
- Rockwool
- Superglass
- Isover
- Kingspan
- Celotex
- Recticel
- Xtratherm
- Steico wood-fibre
- YBS and Actis multifoil
The exact system and brand for your home are confirmed in your written quote.
Heat, bills and EPC
What it does for your heat loss, bills and EPC
Suspended timber floors lose heat through the boards and let cold air in through the gaps; solid floors conduct heat into the ground. Insulating the floor and sealing the gaps lowers the floor's U-value and cuts draughts, so rooms feel warmer at the same thermostat setting, and the EPC usually improves.
See the EPC points and savings for your home in the EPC plannerU-value before and after, typical heat and bill saving, and EPC points — worked out for your property.Price
How much does insulated floor screed cost?
| Service | Typical range, installed |
|---|---|
| Solid floor insulation with new screed | £60–£110 per m² |
Indicative ranges for London and the South East, supplied and installed, including VAT. Updated 11 October 2026. A survey confirms your final price.
VAT on this work
Insulation installed in homes in Great Britain is zero-rated for VAT until 31 March 2027. Other parts of a job like this — such as a new roof covering, structural work or waterproofing — may be standard-rated. Your quote shows the split.What to expect
Time on site, disruption and approvals
Time on site
A suspended floor is typically done room by room over a few days; working from the void below can be quicker where access allows.
Disruption
Lifting floorboards means clearing the room and taking up carpets or flooring. Working from the void below avoids this.
Planning and building control
No planning permission is needed. Underfloor ventilation must be kept clear, and new or renovated floors must meet Building Regulations Part L.
Guarantee and standard
Manufacturer's guarantee, confirmed in your quote.
60-second grant check
Could a grant help pay for it?
Grant eligibility checker
About 60 seconds · plain results: likely, possibly or not eligible
Before we start
What type of property is it?
Questions
Insulated floor screed: your questions answered
How much does insulated floor screed cost?
Typically £60–£110 per m² for solid floor insulation with new screed, installed in London and the South East, including VAT and before any grant. Prices updated 11 October 2026. A survey confirms your final figure.
What is an insulated floor screed?
Insulation boards laid over the slab with a new screed on top, ready for floor finishes or underfloor heating.
When is an insulated screed worth doing?
During a kitchen or ground-floor refit, when floors are coming up anyway.
How long before I can lay flooring on a new screed?
Screeds need drying time before floor finishes go down. It depends on the screed type and thickness, and we'll give you the schedule.
Group D
More in floors, basements and underfloor heating
Suspended timber floor insulation
Mineral wool or rigid board between the joists with an airtight membrane.
Underfloor insulation from the void
Insulation fitted from below through a crawl space, without lifting floorboards.
Solid floor insulation
PIR or XPS boards over the slab with a new screed or floating floor.
Underfloor heating insulation
Insulation boards under wet or electric UFH so heat goes up, not into the ground.
Floors over garages and open space
Insulating floors over unheated garages, passages, undercrofts and overhangs.
Basement and cellar insulation
Insulating basement walls and floors with tanking or cavity drain membranes.
Begin your project
Ready to talk about insulated floor screed?
Tell us about your home and we'll arrange a survey, then a fixed written quote — no obligation.