Loft ventilation in County Londonderry

Homes and buildings across County Londonderry can book loft ventilation, starting with a free survey and a fixed written quote.

We work in Derry/Londonderry, Coleraine, Dungiven, Limavady and Magherafelt and everywhere in between.

Guide price £245 to £695 County Londonderry

Where we work around County Londonderry

This takes in the Causeway Coast and Glens, Derry City and Strabane and Mid Ulster council areas.

Postcode areas: BT.

Councils	Causeway Coast and Glens, Derry City and Strabane and Mid Ulster
Postcode areas	BT
Towns listed	6

What is loft ventilation?

Most pitched roofs are ventilated at the eaves, sometimes with high-level vents as well. Insulation pushed into the eaves can block that path, which is why we fit ventilation trays. More about loft ventilation.

Eaves trays where insulation could block airflow
A note of air leaks from the house that need sealing
Soffit, tile or ridge vents as specified

Why book with us in County Londonderry

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.

We measure before we quote

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

Photos of the finished loft

You see the work done without climbing the ladder.

How much does loft ventilation cost in County Londonderry?

£245 to £695Eaves or tile vents for a typical house. Free survey and a fixed written quote before any work.

This work is not an energy-saving material for VAT, so it is standard-rated if VAT applies. Where it is done alongside insulation, the quote shows each part separately.

Work out a guide price for your loft

Building regulations in Northern Ireland

Northern Ireland has its own Building Regulations, with energy guidance in Technical Booklet F1. Upgrading loft insulation may count as a thermal alteration, so check with your council's building control. How the rules work across the UK.

Questions about loft ventilation in County Londonderry

How do I book a survey in County Londonderry?

Send the form or call us. We call back to agree a time and confirm it in writing.

Can you quote for several properties in County Londonderry?

Yes. Landlords and agents can send a list of addresses and we will survey them in as few visits as we can.

Does my loft need ventilation after insulation?

A cold loft needs a path for outside air, usually at the eaves. New insulation must not block it, which is why we fit eaves trays.

Will extra vents make my house colder?

No. The vents ventilate the loft above the insulation, not the rooms below.