Cavity wall insulation across County Tyrone
We cover 4 towns in County Tyrone: Omagh, Dungannon, Cookstown and Strabane.
Every elevation is judged on its own exposure. Parts of County Tyrone face some of the heaviest wind-driven rain in the UK, especially exposed coastal and upland sites. Here the survey is stricter: some walls suit only certain certified systems, and some should not be filled at all.
Where a County Tyrone property has an extension or a conservatory, we check how the old and new walls meet, because that junction is often missed. Most County Tyrone houses built from the 1920s onwards have cavity walls, but the survey still checks each one: cavity width, debris, the condition of the brickwork and how exposed each wall is.
Building control in Northern Ireland
In Northern Ireland, inserting insulation into an existing cavity wall needs a building control application to your council before the work. We make sure the application route is agreed and confirmed in writing before any drilling starts.
Funding in Northern Ireland
- The Affordable Warmth Scheme, run with the NI Housing Executive, helps owner-occupiers and private tenants with a total gross household income under £23,000; cavity wall insulation is a priority measure where suitable.
- The NI Sustainable Energy Programme funds energy efficiency schemes through participating providers.
- ECO4 does not apply in Northern Ireland.
Sources: Building Control NI: frequently asked questions; Belfast City Council: what are the building regulations; NI Housing Executive: Affordable Warmth Scheme; Utility Regulator: NI Sustainable Energy Programme.
What happens on the day?
Holes of around 22mm are drilled in the mortar joints in a set pattern, roughly a metre apart. The insulation is blown in from the bottom up until each section is full, then every hole is filled with colour-matched mortar. Air bricks and flues are protected, and a cavity barrier is fitted where your wall joins a neighbour's.
For an average house with easy access to the walls, the filling itself takes a few hours. Scaffolding or a tower is only needed for three-storey walls or awkward access, and that is priced up front.
What is included
- Suitability survey with photos and a written result
- Borescope check where the cavity is in doubt
- Certified mineral wool or bonded bead system
- Drilling, filling and colour-matched making good
- Cavity barriers at party walls
- Building regulations route for your nation, confirmed in writing
- Guarantee and installer named on your quote
Cavity wall insulation prices in County Tyrone
| Cavity wall insulation guide prices | Guide price |
|---|---|
| Detached house | £2,295–£3,795 |
| Semi-detached house | £1,495–£2,495 |
| End-terrace house | £1,295–£2,195 |
| Detached bungalow | £1,295–£2,195 |
| Semi-detached bungalow | £895–£1,595 |
| Mid-terrace house | £795–£1,395 |
No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.
The steps for cavity wall insulation in County Tyrone:
Get in touch
Online, by phone or WhatsApp, whichever suits you.
Survey visit
The surveyor checks each wall and looks into the cavity where needed.
Your result in writing
What we found, what it means, and a fixed price if work is needed.
Booked work
Carried out by the installer named on your quote, with their scheme registrations.