Investigation first. Guesswork never.
Mould Removal Northern Ireland exists to raise the standard of mould investigation and remediation across Northern Ireland. When mould keeps coming back, the growth you can see is rarely the whole story.
Our work is built around one clear principle...
Mould is rarely the real problem. It is usually a symptom of how a building is behaving.
So we never treat mould as a surface stain. We work out what the building is doing to produce it, then recommend the route that actually deals with it.
Mould Removal Northern Ireland grew out of Causeway Cleaning Ltd, which Sebastian McCluskey founded in 2009.
Thousands of jobs later, a pattern was impossible to ignore: mould problems across Northern Ireland were being misread, misdiagnosed or simply painted over.
That pattern is what shaped this company: a dedicated investigation and remediation brand built on evidence, plain-English findings and professional accountability.
It is a service for people who want the problem actually solved, not temporarily hidden.
We investigate properly, explain clearly, and stand over the result with documented evidence.
Professionally managed. Personally delivered by Sebastian.
Meet Sebastian, Specialist in Mould Diagnostics & Remediation
Sebastian McCluskey founded Mould Removal Northern Ireland and personally leads its remediation work across Northern Ireland, from Belfast to the north coast.
Diagnosis comes first in every job. Whether the issue is visible growth, suspected hidden moisture, or recovery after fire, smoke or water damage, the cause is identified and evidenced before treatment begins.
Sebastian is IICRC accredited, fully insured and experienced in domestic, commercial and public-sector settings. Each project runs through the same sequence: assess, evidence, remove, treat, verify.
If you want mould investigated and resolved rather than wiped over, Sebastian will assess the situation and give you a straight answer on what happens next.
Mould Removal Northern Ireland is part of Causeway Cleaning Group, alongside Cleaning Contractors NI and Causeway Cleaning.
Aligned to recognised professional standards.
Our remediation work follows the recognised standards for mould, moisture and building performance used across the UK, documented to a level suitable for social landlords and public bodies in Northern Ireland.
ANSI/IICRC S520
The Mould Remediation Standard: the benchmark reference for assessment, containment, removal and verification.
BS 5250
Moisture in Buildings: the code of practice that guides how we assess and resolve condensation risk.
Technical Booklets C, K & F
Resistance to moisture, ventilation and conservation of fuel under the Building Regulations (Northern Ireland).
Registered public-sector supplier delivering structured, compliance-ready remediation to housing associations, councils and property managers across Northern Ireland.
Reach us directly
Rather talk than type? Phone, WhatsApp or email works too. For live fire or water incidents, always ring: it is the quickest way to get us moving.
Mon–Fri, 9am–5pm
Based in Belfast and Coleraine.
Our Belfast base covers the city and the east of the province, while Coleraine handles the north coast, putting the whole of Northern Ireland within easy reach.
- Belfast
- Lisburn
- Derry / Londonderry
- Newry
- Bangor
- Ballymena
- Coleraine - and right across Northern Ireland
Just want the wall wiped down? Then we are probably not the right fit.
If you want the cause found, fixed and documented as part of a structured remediation, we should talk.
+44 2895 600 105
info@mouldremovalbelfast.co.uk
The Mount, 2 Woodstock Link,
Belfast, BT6 8DD