How We Helped a Family in Killybegs Recover Their Home After a Severe Mould Infestation

When the O’Donnells from Killybegs first reached out to us, they were at breaking point.

What started as a few black spots on the bathroom ceiling had spiralled into something much worse—widespread mould, damp smells throughout the house, peeling paint, and an overwhelming sense of defeat. They were ashamed to have people over. Their youngest son had started coughing at night. And no matter how often they cleaned, the mould kept coming back.

This is the story of how Causeway Cleaning Ltd helped one Killybegs family take their home back—and how we can help you too.

The First Call: “We Can’t Live Like This Anymore”

When Mrs O’Donnell called us, she was emotional. The family had tried everything—repainting, bleach sprays, even replacing furniture. Nothing worked. The mould always returned, worse than before.

They had already spent money on surface-level fixes, but what they needed was a proper solution—one based on evidence, science, and long-term prevention.

We arranged a full inspection for the following week.

The Inspection: What We Found

When our team arrived in Killybegs, it didn’t take long to spot the extent of the problem.

Key issues included:

• Heavy black mould around the window frames and skirting boards
• Musty odour in the hallway and bedrooms
• Condensation pooling on internal windows
• A past leak that had never been fully repaired
• Cold, uninsulated external walls creating a condensation trap

Using a thermal imaging camera, we spotted cold bridging in several areas—especially behind the bed in the master bedroom. Moisture readings showed high damp levels in multiple wall sections.

🎥 See how we inspect homes with thermal and moisture detection

Mould DNA Testing Confirmed the Worst

To confirm the severity of the infestation, we used DNA testing to take surface swabs and air samples. Results revealed:

• High levels of Stachybotrys chartarum (toxic black mould)
• Elevated airborne spores of Cladosporium and Penicillium
• Contamination behind plasterboard in the living room and hallway

🎥 Watch how DNA testing works

The Plan: Remediation, Ventilation, and Prevention

We designed a full remediation plan for the O’Donnells, which included:

✅ Safe removal of mould-infested materials

This included sections of plasterboard and skirting that had spore colonisation. We used containment barriers to prevent cross-contamination.

✅ Anti-microbial treatment and fogging

We treated all affected areas with an IICRC-approved solution, followed by a full air-space sanitisation using ULV fogging equipment.

✅ Ventilation upgrades

The family installed two new extractor fans, one in the bathroom and another in the kitchen, as well as a passive vent in the hallway.

✅ Dehumidifier guidance

We advised them on using a smart-controlled dehumidifier to keep indoor humidity under 60%.

The Transformation: A Healthier, Happier Home

Two weeks later, we returned to do a follow-up air test. The spore count had dropped dramatically, and there were no signs of mould regrowth.

But the most important change wasn’t just the walls—it was how the family felt.

“I can finally breathe,” Mrs O’Donnell said. “The house smells clean again. My son sleeps through the night now. It feels like a home again.”

They sent us before-and-after photos, which we proudly display in our gallery (with permission). The walls are fresh, the air is clear, and the fear is gone.

🎥 See an example of similar work here

What You Can Learn from This Killybegs Case

If you’re dealing with mould, even if it seems minor, the damage may already be deeper than you think. Here’s what this family’s story teaches us:

• Bleach and paint won’t solve deep mould issues
• Odour is often your first sign of a hidden infestation
• Scientific testing provides clear answers
• Real remediation takes time, expertise, and care

And above all—you’re not alone. Many families across Donegal are facing the same battle, and we’re here to help.

Ready to Take Your Home Back?

Whether you live in Killybegs or anywhere in County Donegal, Causeway Cleaning Ltd offers:

• Professional mould inspections
• Lab-grade DNA testing
• Expert remediation
• Long-term prevention advice

📱 UK WhatsApp: +44 7789 635887
📱 ROI WhatsApp: +353 89 9408467
💬 Request a Quote or Survey
🌐 Mould Removal Services

Final Word: A Home Should Never Feel Like a Threat

Mould can take more than your walls—it can steal your peace of mind. But with the right tools and support, you can reclaim your home—and your wellbeing.

If you’re ready to breathe again, start with a proper inspection. Let us bring your home back to life, just like we did for the O’Donnells in Killybegs.

📺 Follow us on YouTube for more case studies