How to remove mould from walls and ceilings with Agerul (an easy, step-by-step guide)

Mould on walls and ceilings does more than look unpleasant: it usually appears because of damp, poor ventilation or condensation. Left untreated, it spreads and can leave stains and an unpleasant smell.

In this article, we explain how to remove mould easily with a practical method you can follow at home using Dalia Artisan Soap and Agerul disinfectant tablets, step by step.

Why mould appears on walls and ceilings

Mould develops when moisture, poor ventilation and a cold surface come together. The most common causes are:

• Condensation (bathrooms, kitchens and poorly ventilated rooms).
• Leaks (external walls, roofs and windows).
• Rising damp (ground floors and old walls).
• Drying clothes indoors without ventilation.

If mould keeps coming back, it is usually more than dirt: it is a moisture problem that needs to be addressed.

Before you start: safety and preparation

To get it right and avoid problems:

• Ventilate the room by opening a window.
• Wear gloves and, if there is a lot of mould, a mask.
• Protect the floor and furniture with an old towel or plastic sheeting.
• Avoid splashing fabrics.

Important: do not mix cleaning products on your own (for example, bleach with ammonia or acids). This method uses only water, Dalia Soap and disinfectant tablets.

What you will need

• A brush with medium bristles.
• A cloth to wrap around the brush.
• A basin of water.
• Dalia Artisan Soap.
• 2 Agerul disinfectant tablets.
• Paper or a clean cloth for the final wipe.

How to remove mould with Agerul, step by step

1) Wrap a cloth around a brush

Wrap the brush in a cloth for more controlled scrubbing and to absorb some of the dirt, especially on a painted wall or a ceiling where residue may fall.

2) Prepare water and Dalia Soap in a basin

Fill a basin with lukewarm water and add Dalia Artisan Soap. There is no need to overdo it: aim for soapy water.

3) Add 2 disinfectant tablets to the water

Add two Agerul disinfectant tablets and let them dissolve fully. This mixture helps disinfect the area and reduce recurrence.

4) Dip the brush in the mixture

Soak the brush with its cloth attached, then squeeze out a little water to avoid drips, especially on a ceiling.

5) Scrub the affected areas

Scrub the mould with firm strokes without damaging the paint. Work in sections:

• Start with the outer edge of the stain
• Then move to the centre
  This helps avoid dragging spores onto clean areas.

6) Remove any excess and leave to dry

Wipe away residue with paper or a clean cloth and leave to dry with the room ventilated.

And that is it.

If the mould is stubborn or returns quickly

• Repeat the process on the same area the following day.
• Check the cause: improve ventilation if there is condensation; arrange repairs if there is a leak.
• In bathrooms and kitchens, using an extractor fan or ventilating for 10–15 minutes daily often makes a difference.

Common mistakes when removing mould

Ignoring the underlying damp (a leak or condensation): it is like sweeping without fixing an open door.

Cleaning only the surface without disinfecting: it seems to disappear, but comes back.

Failing to ventilate during and after cleaning.

Painting over it without treating it: the mould returns and stains the surface again.