How To Clean Mould Off Walls - Effective Diy Solutions

Lenard Nagy
Jan 23, 2023

Mould can be a pesky problem that plagues many homes and businesses in Ireland. Not only is it unsightly, but it can also pose health risks to occupants. This comprehensive guide will discuss how to clean mould off walls effectively and safely, ensuring you can maintain a healthy environment for everyone. Perfect Clean, a top-notch cleaning company in Ireland, provides expert mould removal services to help you combat this issue. Let’s dive into the topic and learn the best methods for removing mould from your walls.

Understanding Mould and its Causes

Before we discuss how to clean mould off walls, it’s essential to understand what causes mould in the first place. Mould is a type of fungus that thrives in damp, humid conditions. It can grow on various surfaces, including walls, ceilings, and floors. The most common reasons for mould growth in homes and businesses are:

  • Poor ventilation
  • High humidity levels
  • Leaking pipes or roof
  • Condensation from windows and doors

By identifying and addressing these issues, you can prevent mould from forming in the first place. However, if you’re already dealing with a mould problem, Perfect Clean is here to help.

Signs of Mould Growth

Recognising the signs of mould growth is essential for timely intervention. Watch out for the following indicators:


Mould can cause wall discolouration, appearing as black, green, or brown patches.

Musty odours

Mould produces a distinct, unpleasant smell.

Allergy symptoms

If you or your family members experience increased allergy symptoms, such as sneezing, coughing, and itchy eyes, mould could be the culprit.

How to Clean Mould Off Walls?

Cleaning mould off walls may seem daunting, but with the right tools and techniques, you can effectively remove and prevent it from returning. Follow these steps to ensure you properly clean your walls:

Step 1: Prepare the Area

Before cleaning mould off walls, protect yourself and the surrounding area. Wear gloves, a mask, and protective eyewear to avoid inhaling mould spores or contacting them directly. Also, cover the floor and nearby furniture with plastic sheets to protect them from mould and cleaning solutions.

Step 2: Choose the Right Cleaning Solution

Several cleaning solutions can effectively remove mould from walls. Some popular options include:

  • White vinegar
  • Bleach
  • Hydrogen peroxide
  • Baking soda

White vinegar is a great option for a natural approach, as it’s non-toxic and effective at killing mould. If you prefer a stronger solution, bleach or hydrogen peroxide can also be used. Remember never to mix bleach and vinegar, which can produce toxic fumes.

Step 3: Apply the Cleaning Solution

Apply your chosen cleaning solution to the mouldy area using a spray bottle or a cloth. Allow the solution to sit for at least 10 minutes to penetrate the mould and kill the spores.

Step 4: Scrub the Mould Off

Using a stiff-bristled brush, scrub the mouldy area to remove the dead mould. Be sure to scrub in a circular motion and apply enough pressure to lift the mould from the wall.

Step 5: Rinse and Dry the Wall

Rinse the wall with clean water to remove any residual cleaning solution and mould. Use a clean cloth to dry the wall thoroughly to prevent moisture from lingering and causing new mould growth.

Step 6: Prevent Future Mould Growth

To prevent future mould growth, address the underlying issues that caused the mould in the first place. Ensure proper ventilation, maintain appropriate humidity levels, and fix leaks or condensation problems.

Importance of Removing Mould from Walls

Health Hazards

Mould can cause various health issues, including allergies, respiratory problems, and even more severe conditions like asthma attacks.

Structural Damage

If left untreated, mould can weaken the structure of your walls, leading to potential damage and costly repairs.

Aesthetic Reasons

Mould growth is unsightly and can negatively impact the overall appearance of your home or workspace.

Property Value

Mould can reduce the value of your property, making it harder to sell or rent.

When to Hire a Professional Cleaning Company?

While it’s possible to clean mould off walls yourself, there are instances when hiring a professional cleaning company, like Perfect Clean, is the best course of action. If the mould problem is extensive, covers a large area, or if you’re dealing with toxic black mould, it’s best to call in the experts.

Perfect Clean’s experienced team will assess the situation, provide a thorough mould removal service, and help prevent future growth. Plus, they use industry-leading equipment and eco-friendly cleaning solutions, ensuring the best results for your home or business.

Take Action Against Mould Today

Knowing how to clean mould off walls is essential for maintaining a healthy environment in your home or business. Following the steps outlined in this guide and addressing the root causes of mould growth, you can effectively remove mould and prevent future issues. If you’re dealing with a large or challenging mould problem, don’t hesitate to contact Perfect Clean, Ireland’s top cleaning company, for professional mould removal services. Contact Perfect Clean today to schedule a consultation and restore your space to a mould-free, healthy state.

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Frequently Asked Questions

What kills black mould on walls?

To kill black mould on walls, use a strong cleaning solution like bleach, hydrogen peroxide, or a commercial mould removal product. Always follow the manufacturer’s instructions and take proper safety precautions when handling these chemicals.

Is bleach or vinegar better to kill mould?

Both bleach and vinegar can effectively kill mould. However, vinegar is a non-toxic, eco-friendly option, while bleach is a more potent chemical. If you prefer a natural solution, opt for vinegar. For stubborn or extensive mould issues, bleach may be more effective.

What kills mould on walls naturally?

White vinegar is a natural, non-toxic solution that kills mould on walls. You can also use baking soda or hydrogen peroxide as natural alternatives to chemical cleaning agents.

Can I leave the vinegar on the mould overnight?

Yes, you can leave the vinegar on mould overnight to increase its effectiveness. However, ensure the area is well-ventilated, and keep children and pets away from the treated area.

How harmful is black mould?

Black mould, or Stachybotrys chartarum, produces toxic compounds called mycotoxins that can cause various health issues. These include respiratory problems, skin irritation, and neurological symptoms. It’s essential to address black mould issues promptly to protect the health of building occupants.

Can black mould make you sick?

Yes, black mould can make you sick, causing symptoms such as coughing, wheezing, itchy eyes, skin irritation, and in severe cases, neurological problems. Removing black mould and addressing the underlying causes is crucial to protect your health.

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*FYI, parts of this blog post were drafted by artificial technlogy. But rest assured, it's been thoroughly researched, edited, reviewed and me & my team.