Spotted those ominous black patches on your exterior render? Don't panic; while unsightly and potentially a health concern, black mould can often be tackled. Understanding the best method and when to call in the pros is essential, especially here in our damp UK climate.

Step 1: Safety First!

Before tackling any mould, protection is key:

• Gloves & Mask: Non-porous gloves and a proper respirator mask (not just a dust mask) are essential to minimise inhaling mould spores.
• Clothing: Wear old clothes you can wash on hot afterwards, and eye protection is a good idea to prevent splashes.

Step 2: Assess the Situation

• Small Patches: If the mould is isolated to a small area, DIY cleaning is often doable.
• Extensive Mould: Large areas covering multiple stories or hard-to-reach render will likely need professional help for both safety and effectiveness.
• Indoor Mould Too: If you see interior mould growth as well, there might be a larger damp issue professionals should address.

Step 3: DIY Cleaning Solutions

For smaller mould patches, choose your cleaning product based on severity:

• Mild Cases: Diluted household bleach (check your render manufacturer's guidelines for compatibility) often works. Mix one part bleach to three parts water in a spray bottle.
• Stubborn Mould: If bleach doesn't make a dent, try a specialised mould remover from your local DIY store. Always follow the product instructions carefully.

The Cleaning Process:

1. Prep: Protect plants and surfaces below your work area with sheeting
2. Spray: Thoroughly saturate the mouldy area with your chosen solution.
3. Let It Work: Allow the solution to sit for 10-15 minutes (check product guidelines).
4. Scrub: Use a stiff-bristled brush to agitate the mould, working in small sections.
5. Rinse: Use a garden hose or a clean bucket of water to rinse thoroughly. Repeat the process if needed.

Important Note: Porous renders might soak up cleaning solutions, causing staining. A patch test on a hidden area is wise.

When Pro Cleaning is the Smart Choice

• Safety: Tall renders need scaffolding and expertise to work on safely.
• Stubborn Stains: Sometimes, only specialized pro equipment and solutions remove heavy mould without damaging the render.
• Recurrence: If mould quickly returns, it may indicate hidden damp issues that require investigation.

How G.B Cleaning Services Can Help

We tackle tough render mould with:

• Specialised Cleaning: Our soft washing techniques eradicate mould without risking damage to your render.
• Identifying the Root Cause: We check for structural issues contributing to mould growth.
• Long-Term Protection: Our preventative render sealants help keep mould at bay for years to come.

Beyond Cleaning: Preventing Future Mould

• Ventilation: Improve airflow around your home to minimise dampness.
• Gutters: Clean, functional gutters direct water away from your render.
• Inspect Regularly: Early intervention means easier mould cleanup!

Don't Let Black Mould Ruin Your Home's Appearance

With the right approach, a mould-free render is achievable! If DIY solutions feel overwhelming or the problem is extensive, contact us today for your free consultation. Let's get your home looking its best and protected from future mould growth.