Loft InsulationInstallers

Loft insulation top-up in Caerphilly

Homes in Caerphilly get the same service as everywhere else we work in Gwent. For a loft insulation top-up, that means a free survey and a fixed written quote.

Postcode districts we cover here include CF83, in the Caerphilly council area.

Guide price £395 to £545 Caerphilly, Gwent
A loft insulation top-up layer laid across older insulation

Where we work around Caerphilly

As the crow flies, Caerphilly is roughly 9 miles from Newport (Gwent).

We also cover Risca, Gelligaer, Blackwood and Newport (Gwent).

Postcode districtsCF83
Council areaCaerphilly
County or areaGwent

What is a loft insulation top-up?

Before we quote we measure the existing layer in several places and check its condition. If it is dry, even and not contaminated, we keep it and lay the top-up across it at right angles. More about a loft insulation top-up.

  • Depth check and photos before and after
  • Gaps in the existing layer filled
  • Cross layer to a total of 270 to 300 mm

Why book with us in Caerphilly

Clear contact details

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

We measure before we quote

Existing depth, joist spacing, wiring and the tank are checked, not guessed.

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.

No pressure selling

You get everything in writing and decide in your own time.

How much does a loft insulation top-up cost in Caerphilly?

£395 to £545Terraced house, average loft, topping up from about 100 mm. Free survey and a fixed written quote before any work.

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).

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 a loft insulation top-up in Caerphilly

Do you cover all of CF83?

Yes, we cover the CF83 postcode district and the districts around 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 you visit Caerphilly 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.

Can I still store things in the loft after a top-up?

Not directly on the insulation. A 270 mm layer stands well above the joists, so storage needs raised boarding on loft legs.

Which way should the top-up layer run?

Across the joists, at right angles to the first layer. That covers the tops of the joists, which otherwise let heat escape along the timber.

Loft insulation top-up in other towns

Other loft work in Caerphilly

Find out what your loft needs

Free survey and a fixed written quote for installation work. Guide prices first if you prefer.