Where we work around Merthyr Tydfil

Merthyr Tydfil is about 7 miles from Rhondda as the crow flies.

We also cover Aberdare, Rhondda, Tonypandy and Pontypridd.

Postcode districts	CF47, CF48
Council area	Merthyr Tydfil
County or area	Mid Glamorgan

What is rafter insulation?

Because the whole roof slope, the gables and the party walls now have to be insulated, this costs much more than insulating the floor and saves less heat for the money. We check the roof underlay first: a breathable membrane and a felt with no ventilation gap need different build-ups to avoid condensation. More about rafter insulation.

Insulated plasterboard lining where specified
Vapour control layer where the design needs one
Rigid insulation between the rafters, joints taped

Why book with us in Merthyr Tydfil

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.

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.

Clear contact details

Your quote says who to call with questions before, during and after the work.

How much does rafter insulation cost in Merthyr Tydfil?

£1,645 to £2,595About 30 m² of roof slope. Free survey and a fixed written quote before any work.

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.

Work out a guide price for your loft

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 rafter insulation in Merthyr Tydfil

Will I get a written quote for work in Merthyr Tydfil?

Yes. Every quote is in writing with the work, the price and what is included, so you can compare it properly.

Do you cover all of CF47?

Yes, we cover the CF47 postcode district and the districts around Merthyr Tydfil.

How soon can you visit a home in Merthyr Tydfil?

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.

Will it cause condensation?

It can if the build-up is wrong for the roof. Old bitumen felt needs a ventilation gap behind the insulation; a modern breathable membrane may not. We check before we design it.

Is insulating between the rafters better than the loft floor?

Not for saving energy alone. Insulating the floor heats less space and costs far less. Rafter insulation is the right answer when the loft itself needs to be warm.

Rafter insulation in Merthyr Tydfil