Blown loft insulation in Cardiff
Homes in Cardiff get the same service as everywhere else we work in South Glamorgan. For blown loft insulation, that means a free survey and a fixed written quote.
We cover postcodes including CF10, CF11 and CF24. The local authority is Cardiff.

Where we work around Cardiff
We also cover Penarth, Trowbridge (South Glamorgan), Barry and Cowbridge.
| Postcode districts | CF10, CF11, CF24, CF5 |
|---|---|
| Council area | Cardiff |
| County or area | South Glamorgan |
What is blown loft insulation?
The machine stays outside or on the landing and the hose runs up to the loft. We hold a board or tray at the eaves so the loose fill cannot block the ventilation path. More about blown loft insulation.
- Loose-fill mineral wool to the agreed depth
- Hatch area finished with a retaining upstand
- Depth markers left in place
Why book with us in Cardiff
Fixed written price
The price on the quote is the price you pay. It only changes if you change the job, or if we find something hidden, such as rot, and you agree the change in writing first.
Downlights made safe
Fire-rated covers or a clear zone around recessed lights.
Tank and pipes protected
Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
How much does blown loft insulation cost in Cardiff?
Installing insulation in a home is zero-rated for VAT until 31 March 2027 and 5% after that, under HMRC's rules for energy-saving materials (notice 708/6).
Building regulations in Wales
Wales has its own Approved Document L. Insulation alone is not normally notified, but conversions need building control. How the rules work across the UK.
Questions about blown loft insulation in Cardiff
Do you charge extra to travel to Cardiff?
Not normally. Our guide prices include normal travel to Cardiff. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.
Can a landlord in Cardiff book work for a tenanted house?
Yes. We can arrange access with the tenant directly and send you photos once the work is finished.
How do I pay for work in Cardiff?
Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.
Is it messy?
The hose runs through the house, so we sheet the route and the landing. The fibre stays in the loft.
Does blown insulation settle?
Mineral wool loose fill settles a little, which is allowed for in the depth we install. The depth markers let you check it later.
