Room-in-roof insulation in Powys
We provide room-in-roof insulation across Powys, with a free survey and a fixed written quote.
Towns we cover include Brecon, Builth Wells, Llandrindod Wells, Machynlleth and Newtown.

Where we work around Powys
Council areas covered: Powys.
Postcode areas: LD, NP, SA and SY.
| Councils | Powys |
|---|---|
| Postcode areas | LD, NP, SA, SY |
| Towns listed | 7 |
What is room-in-roof insulation?
Most rooms-in-roof are reached by stripping the existing plasterboard on the slopes, fitting insulation between and over the rafters, and re-boarding. Dormer cheeks and roofs are included where they can be reached. More about room-in-roof insulation.
- Eaves voids insulated where accessible
- Insulation to slopes, knee walls and flat ceiling
- Boarding and finishing as agreed on the quote
Why book with us in Powys
Tidy work
Dust sheets on the route in and every bit of packaging taken away.
Plain-English advice
We explain what we find in plain English, and say so when nothing needs doing.
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
No pressure selling
You get everything in writing and decide in your own time.
How much does room-in-roof insulation cost in Powys?
Part of this work can be zero-rated as energy-saving materials until 31 March 2027, and part is standard-rated. If VAT applies, your quote shows which is which.
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 room-in-roof insulation in Powys
How do I book a survey in Powys?
Send the form or call us. We call back to agree a time and confirm it in writing.
Which council covers my address in Powys?
Addresses in Powys come under Powys council. The council matters for building control questions and some funding schemes.
Can it be done without removing the plasterboard?
Sometimes the flat ceiling and eaves voids can be reached from behind. The slopes almost always need the boards off to insulate them properly.
Will the room get smaller?
Slightly. Insulated plasterboard over the rafters takes a few centimetres off each slope.
