Group D · Floors, basements and underfloor heating
Garage conversion insulation
Floor, walls and roof brought up to habitable standard.
Priced after survey
Garage conversion insulation
Every job like this is different, so we measure first and give you a fixed written quote. The price depends on:
- The area and access
- What's there now and its condition
- The system and finish you choose
No obligation — your survey confirms what suits and what it costs.
- Best for
- Garage conversions
- Guarantee or standard
- Building control
- Time on site
- Programmed with the conversion works.
- Typical price
- Priced after survey
What it is
What is garage conversion insulation?
Floor, walls and roof brought up to habitable standard.
Best for: Garage conversions.
Who it suits
Which homes is garage conversion insulation suitable for?
Is my home suitable?
Pick your property type for a straight answer on garage conversion insulation.
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
Flats and blocks of flats
Commercial and public buildings
Usually suitable Depends — a survey confirms
Not usually suitable for 9 property types
- Park and mobile home — Park and mobile homes need specialist systems, which we arrange through a partner rather than standard measures.
- Converted flat — Garage conversions apply to houses with an integral or attached garage.
- Purpose-built flat — Garage conversions apply to houses with an integral or attached garage.
- Ground-floor, top-floor flat or maisonette — Garage conversions apply to houses with an integral or attached garage.
- Mansion block — Garage conversions apply to houses with an integral or attached garage.
- Ex-local-authority flat or maisonette — Garage conversions apply to houses with an integral or attached garage.
- Low-rise block — Garage conversions apply to houses with an integral or attached garage.
- Mid-rise block — Garage conversions apply to houses with an integral or attached garage.
- High-rise block — Garage conversions apply to houses with an integral or attached garage.
Materials and brands
What we use
Floor, walls and roof brought up to habitable standard.
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 garage conversion insulation cost?
Priced after survey
Jobs like this vary too much for a fair online price, so we measure first and give you a fixed written quote — with no obligation.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
Programmed with the conversion works.
Disruption
Part of the conversion.
Planning and building control
Converting a garage into a habitable room needs building control approval.
Guarantee and standard
Building control. The guarantee and certification for your job are confirmed in writing 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
Garage conversion insulation: your questions answered
What insulation does a garage conversion need?
The floor, walls and roof all need bringing up to habitable standard to meet Building Regulations.
Do I need building control for a garage conversion?
Yes — converting a garage into a habitable room is building work that needs building control approval.
Can you do the whole garage conversion?
We deliver the insulation package, and can work with LINX Design & Build on the conversion itself.
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.
Insulated floor screed
Insulation plus screed, ready for underfloor heating.
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.
Begin your project
Ready to talk about garage conversion insulation?
Tell us about your home and we'll arrange a survey, then a fixed written quote — no obligation.