Loft ventilation in Derry/Londonderry

Where we work around Derry/Londonderry

We work in neighbouring Limavady too.

Postcode districts	BT48
Council area	Derry City and Strabane
County or area	County Londonderry

What is loft ventilation?

Most pitched roofs are ventilated at the eaves, sometimes with high-level vents as well. Where there are no vents, we add soffit vents, tile or slate vents, or ridge vents, depending on the roof covering and the underlay. More about loft ventilation.

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

Why book with us in Derry/Londonderry

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.

Plain-English advice

We explain what we find in plain English, and say so when nothing needs doing.

Photos of the finished loft

You see the work done without climbing the ladder.

How much does loft ventilation cost in Derry/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 Derry/Londonderry

Can you visit Derry/Londonderry 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.

How soon can you visit a home in Derry/Londonderry?

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.

What do I need to do before you arrive in Derry/Londonderry?

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.

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.