Blown loft insulation in Caernarfon
Caernarfon is part of the area we cover in Gwynedd. For blown loft insulation, you get a free survey and a fixed written quote.
Jobs in LL55 are all within our normal area, inside the Gwynedd council area.

Where we work around Caernarfon
Caernarfon sits about 9 miles from Bangor (Gwynedd), measured in a straight line.
Nearby, we also cover Llangefni and Bangor (Gwynedd).
| Postcode districts | LL55 |
|---|---|
| Council area | Gwynedd |
| County or area | Gwynedd |
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.
- Loose-fill mineral wool to the agreed depth
- Depth markers left in place
- Hatch area finished with a retaining upstand
Why book with us in Caernarfon
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.
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.
Tidy work
Dust sheets on the route in and every bit of packaging taken away.
How much does blown loft insulation cost in Caernarfon?
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 Caernarfon
Do you take on jobs outside Caernarfon?
Yes. We also work in Llangefni and Bangor (Gwynedd) and elsewhere in Gwynedd.
Can you visit Caernarfon outside working hours?
Ask about early, late or weekend appointments when you get in touch, and we will tell you honestly what we can offer.
What do I need to do before you arrive in Caernarfon?
Clear a path to the hatch and, if you can, move stored items away from the area we will be working in. Tell us about anything heavy or fragile.
Is it messy?
The hose runs through the house, so we sheet the route and the landing. The fibre stays in the loft.
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.
