Where we work around Dolgellau

Dolgellau sits about 35 miles from Bangor (Gwynedd), measured in a straight line.

We also work in Porthmadog, Pwllheli, Caernarfon and Bangor (Gwynedd), further afield.

Postcode districts	LL40
Council area	Gwynedd
County or area	Gwynedd

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.

Eaves ventilation kept clear
Cross layer to a total of 270 to 300 mm
Gaps in the existing layer filled

Why book with us in Dolgellau

Tidy work

Dust sheets on the route in and every bit of packaging taken away.

Eaves kept clear

Insulation is held back from the eaves so the loft can still ventilate.

Tank and pipes protected

Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.

Boarding done properly

Storage boards go on loft legs, never straight onto the insulation.

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

£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 Dolgellau

What do I need to do before you arrive in Dolgellau?

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.

Can a landlord in Dolgellau book work for a tenanted house?

Yes. We can arrange access with the tenant directly and send you photos once the work is finished.

How do I pay for work in Dolgellau?

Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.

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.

Can new insulation go on top of old insulation?

Yes, if the old layer is dry, clean and reasonably even. If it is damp, contaminated or badly compressed we recommend removing it first.

Loft insulation top-up in Dolgellau