Blown loft insulation in South Glamorgan
We provide blown loft insulation across South Glamorgan, with a free survey and a fixed written quote.
We work in Cardiff, Barry, Penarth, Cowbridge and Llantwit Major and everywhere in between.

Where we work around South Glamorgan
This takes in the Cardiff and Vale of Glamorgan council areas.
That covers the CF postcode areas.
| Councils | Cardiff and Vale of Glamorgan |
|---|---|
| Postcode areas | CF |
| Towns listed | 6 |
What is blown loft insulation?
The machine stays outside or on the landing and the hose runs up to the loft. Depth markers fixed to the joists or trusses show the installed depth, and the fibre settles into corners that rolls would bridge. More about blown loft insulation.
- Depth markers left in place
- Loose-fill mineral wool to the agreed depth
- Eaves trays to keep ventilation open
Why book with us in South Glamorgan
Photos of the finished loft
You see the work done without climbing the ladder.
Honest about grants
If you might qualify for funding, we tell you before we quote.
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
Tank and pipes protected
Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.
How much does blown loft insulation cost in South Glamorgan?
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 South Glamorgan
Do you cover the whole of South Glamorgan?
Yes. We cover every town and village in South Glamorgan, including Cardiff, Barry and Penarth.
How do I book a survey in South Glamorgan?
Send the form or call us. We call back to agree a time and confirm it in writing.
Is blown insulation better than rolls?
It performs about the same for the same depth. It is the faster and neater option in lofts that are awkward to work in, and rolls are better where you want boarding later.
Is it messy?
The hose runs through the house, so we sheet the route and the landing. The fibre stays in the loft.
