Loft insulation for flats in Caerphilly
We insulate lofts above flats in Caerphilly and across Gwent, starting with a free survey and a fixed written quote.
Postcode districts we cover here include CF83, in the Caerphilly council area.

Where we work around Caerphilly
Caerphilly is about 9 miles from Newport (Gwent) as the crow flies.
We work in neighbouring Risca, Gelligaer, Blackwood and Newport (Gwent) too.
| Postcode districts | CF83 |
|---|---|
| Council area | Caerphilly |
| County or area | Gwent |
What is different about insulating a flat's loft?
In most leasehold flats the loft belongs to the freeholder, so the managing agent or freeholder must agree to the work. Shared lofts usually have fire separation between flats that must not be disturbed. More about loft insulation for a flat.
- Fire compartment walls left intact
- Photos and a completion note for the managing agent or factor
- Single-flat or whole-block quotes
Why book with us in Caerphilly
No pressure selling
You get everything in writing and decide in your own time.
Eaves kept clear
Insulation is held back from the eaves so the loft can still ventilate.
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
Plain-English advice
We explain what we find in plain English, and say so when nothing needs doing.
How much does loft insulation for a flat cost in Caerphilly?
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.
Rented homes
Privately rented homes in Wales fall under the same minimum energy efficiency rules as England: at least band E now, rising to band C for all tenancies in scope by 1 October 2030.
Questions about loft insulation for a flat in Caerphilly
Do you charge extra to travel to Caerphilly?
Not normally. Our guide prices include normal travel to Caerphilly. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.
Can a landlord in Caerphilly book work for a tenanted house?
Yes. We can arrange access with the tenant directly and send you photos once the work is finished.
Do you take on jobs outside Caerphilly?
Yes. We also work in Risca and Gelligaer and elsewhere in Gwent.
Is there VAT on loft insulation in flats?
Flats are residential, so installing insulation is zero-rated until 31 March 2027.
Can I insulate the loft above my flat?
Usually yes, with the freeholder's consent. The lease will say who owns and maintains the roof space.
