Period home loft insulation in Caernarfon
We insulate lofts in older houses in Caernarfon and across Gwynedd, starting with a free survey and a fixed written quote.
Postcode districts we cover here include LL55, inside the Gwynedd council area.
Where we work around Caernarfon
Caernarfon sits about 9 miles from Bangor (Gwynedd), measured in a straight line.
We also cover Llangefni and Bangor (Gwynedd).
| Postcode districts | LL55 |
|---|---|
| Council area | Gwynedd |
| County or area | Gwynedd |
What is different about insulating an older home's loft?
We work from crawl boards spanning several joists so the ceilings are not loaded, check for loose plaster keys before anything is laid, and usually recommend vapour-open insulation such as sheep's wool or wood fibre. Unfelted slate roofs are naturally well ventilated, but they let in wind-driven rain and snow, which the insulation has to cope with. More about loft insulation for an older house.
- Chimney breasts and party walls kept clear of combustibles where flues are live
- Breathable insulation where it suits the building
- Ceiling-safe working from crawl boards
Why book with us in Caernarfon
Plain-English advice
We explain what we find in plain English, and say so when nothing needs doing.
Photos of the finished loft
You see the work done without climbing the ladder.
Clear contact details
Your quote says who to call with questions before, during and after the work.
Eaves kept clear
Insulation is held back from the eaves so the loft can still ventilate.
How much does loft insulation for an older house 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 loft insulation for an older house in Caernarfon
How soon can you visit a home in Caernarfon?
We call you back to agree a time that suits you, and confirm the date in writing. Availability changes week to week, so we will give you the earliest slot we have.
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.
Do you charge extra to travel to Caernarfon?
Not normally. Our guide prices include normal travel to Caernarfon. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.
Do I need permission to insulate a listed building's loft?
Possibly. Listed building consent is needed for works that affect the building's character. Ask your council's conservation officer.
Can loft insulation damage lath-and-plaster ceilings?
It can if people kneel between joists or if the ceiling is already weak. We work from boards and check the ceiling first.
