Damp and Timber Specialists for 50 years

How Prokil Treats and Prevents Mould for Good

No two properties are the same, and neither are their mould problems. That’s why every treatment at Prokil begins with a thorough, no-obligation survey. We look beyond the surface to identify the true source of moisture, whether it’s condensation, water ingress, or a failed damp-proof course.

Our Mould Remediation Process Typically Includes:

  • Surface sterilisation: We treat affected areas with industry-grade sterilising agents. This removes visible mould and neutralises active spores.
  • Root-cause resolution: We find and fix the moisture source, from rising damp to damaged guttering, to prevent it from happening again.
  • Ventilation upgrades: We offer a range of mechanical ventilation systems to help keep your property dry and breathable:

Our surveyors are certified by CSRT, CSSW, and CSTDB. We are full members of the Property Care Association, so you can expect expert advice and proper treatment every time.

Find out more about our mould treatment options and why professional remediation matters.


Why Choose Prokil for Mould Treatment?

Trusted by homeowners and property professionals since 1966.

While many companies offer a quick spray-and-go service, Prokil takes a different approach. We use technical skills, industry certifications, and clear advice to help you remove mould permanently, not just hide it.

Here’s Why Customers Across the South of England Rely on Us:

Whether it’s surface mould in a bathroom or widespread black mould in a cellar, we have the experience and tools to resolve it properly.

Book your survey online today or call us on 0800 048 9488 to speak to your local Prokil team.

What is Mould & Black Mould?

Mould and black mould aren’t just unsightly. They signal deeper problems like condensation, trapped humidity, or penetrating damp. These dark, often slimy patches appear on walls, ceilings, and windowsills when moisture in the air meets colder surfaces. Over time, they can cause internal damage, ruin décor, and worsen indoor air quality.

Wiping mould away might temporarily improve the appearance, but it’s likely to return if you don’t solve the root cause. Persistent mould can cause long-term harm in your home. It can lead to timber decay, damage to plaster, and weakened structures.

At Prokil, we do things differently. Our PCA-qualified surveyors always begin with an in-depth survey to identify what’s really behind the mould. With us, there is no guesswork, nor pressure sales; just expert-led advice and targeted treatment based on over 50 years of experience.

Call us on 0800 048 9488 or book a mould survey online for clear, trusted guidance from your local Prokil team.

What Causes Mould in Homes & Commercial Properties?

Excess moisture and poor airflow create the perfect storm.

Mould, such as black mould (Stachybotrys chartarum), is a byproduct of moisture and a lack of ventilation. Spores are always present in the air, but when humidity builds and airflow is limited, these spores settle and thrive on damp surfaces.

Common Causes of Mould Include:

  • Every day activities like cooking and showering without adequate ventilation.
  • High humidity levels combined with poor airflow.
  • Leaking pipes, gutters or roofs introduce hidden moisture.
  • Cold, uninsulated surfaces that cause condensation.
  • Blocked air bricks or sealed-off chimneys.

We’ve seen mould flourish behind furniture, in wardrobes, under floorboards, and inside loft spaces. Mould can thrive and go unnoticed anywhere damp and with restricted airflow.

Explore our condensation services and ventilation systems to learn how we prevent these issues at the source.

Is Black Mould Dangerous?

Black mould isn’t just unsightly; it can impact your health. When spores build up in the air, they may trigger or worsen respiratory symptoms. This is especially true in vulnerable people such as children, the elderly, or those with asthma or allergies.

Black Mould Exposure May Cause:

  • Coughing, sneezing or wheezing indoors.
  • Irritated eyes, skin, or airways.
  • Fatigue or headaches linked to indoor air quality.
  • Worsened asthma or bronchitis symptoms.

Although not every mould patch is hazardous, long-term exposure should be taken seriously. That’s why Prokil offers expert diagnosis. Our surveyors check if visible mould shows the whole issue or hints at deeper problems like structural damp, leaks, or poor insulation.

Are you concerned about mould affecting your health? Book a mould survey with Prokil for peace of mind and a practical plan.

Ready to Stop Mould Returning for Good?

Understand the cause. Treat it properly. Keep it gone.

If mould keeps reappearing in your home or workplace, the problem is likely deeper than it looks. Condensation, hidden leaks or damp bridging behind the walls can all trigger repeat outbreaks. That’s why surface cleaning alone won’t work and why a diagnosis-first approach is essential.

At Prokil, we don’t sell treatments until we understand the issue. Our expert surveyors evaluate your property from top to bottom. They will clearly explain the findings and tailor the solution to your needs. Our mould remediation skills and ventilation upgrades help you create a healthier living space for good.

Call 0800 048 9488 or book your mould survey online and take the first step towards a mould-free home.

Frequently Asked Questions

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What to expect from your survey

1

Book a survey

Book a survey from any of our locations, at a time that suits you.

2

Our experts give a quote

One of our damp & timber experts will arrive to survey the work.

3

We complete the work

Based on a quote, we carry out the work guaranteed for 20 years.