All Category

mould and algae on walls

How to Clean Walls and Remove Stains and Mould: A Complete Guide


A woman in a blue striped shirt uses a sponge to clean a wall before and after painting it. The goal is to remove stains and mould.

Walls are vertical surfaces, unlike floors, which can make homeowners believe that dust doesn’t settle on them and that they don’t need to clean them. Still, things like dust, lard, smoke, and bug poop might end up covering them. Allergies and respiratory issues might occur if this is not cleansed.

To keep the paint from chipping, how can you clean the walls? Here you will find simple, step-by-step instructions for cleaning walls before and after painting, removing mildew, and, if you have children, how to erase their marks off walls!

The Best Ways to Get Walls Ready for Painting

Walls should be cleaned of any filth, grime, or stains before painting. A clean, smooth surface will improve the adherence of high-quality paint materials, but they may attach to almost any surface.

Before you paint, follow these steps to clean your walls.

Tools and Supplies Needed

To start with, acquire the necessary tools and materials:

  • Sponges or microfibre cloths
  • Buckets
  • Grease-cutting detergent like Selleys Liquid Sugar Soap
  • Bleach
  • Warm water

Step 1: Wipe the Walls with an Appropriate Solution

Typically, it’s sufficient to use a sponge and warm water to clean the walls. But if you’re addressing an area that’s often exposed to oil such as the kitchen, you may need something stronger like a grease-cutting detergent mixed with some warm water.

Step 2: Wipe Down with Clean Water

After wiping the filth and grime, immerse another clean sponge or towel in clean water. Wring until it’s moist and perform a second wipe down to eliminate any soap residue.

Step 3: Allow Walls to Dry Before Painting

Lastly, allow the walls some time to dry entirely before you start painting. Painting when the walls are still moist might cause blisters or bubbles to appear.

Tip! It’s advisable to apply a coat of sealant before the paint colours are applied. A primer assists to increase the adherence of following paint coats, while disguising aesthetic defects on the surface and preventing moisture from penetrating through the wall.

Mould Removal Service on Walls

If your mould coverage is extensive, or if it’s a result of persistent issues such as water leaks, it’s advisable to seek professional help. Experts in mould remediation will not only remove the mould more effectively but also diagnose and resolve root causes, such as plumbing issues or external water ingress, to prevent recurrence. Whatsapp us today.

How to Clean Painted Walls Without Removing the Paint

Did you know that uncleaned walls might exacerbate asthma and allergies? In fact, homeowners are urged to clean their walls at least once every 1 to 4 weeks to eliminate any filth and dust that may build.

The recommended cleaning frequency and products utilised depend on the kind of wall paint and paint finish as mentioned here:

Suitable Materials and Cleaning Frequency

Types of Wall PaintSuitable MaterialsSuitable Cleaning Frequency
Oil-basedHousehold detergents (diluted), White vinegar, WaterOnce every 1 to 2 weeks
Water-basedMulti-purpose cleaner, WaterOnce a month
Types of Paint FinishesSuitable MaterialsSuitable Cleaning Frequency
Flat or matteWaterOnce a month
Eggshell or satinDishwashing liquid, WaterOnce every 1 to 2 weeks
Semi-gloss or glossHousehold detergents (diluted), WaterOnce every 1 to 2 weeks

If you already have a newly painted wall, read on for 4 simple methods to clean it without harming the paint.

Tools and Supplies Needed

Before you begin cleaning, prep these equipment and materials:

  • Non-abrasive sponges or microfibre cloths
  • Handheld vacuum or dusting brush with an extensible wand
  • Buckets
  • Multi-purpose cleaner like Selleys Liquid Sugar Soap
  • Baking soda
  • Rubbing alcohol
  • Melamine sponge
  • Warm water

Step 1: Get Rid of Dust

The first step is to get rid of the dust using a portable vacuum or dusting brush with an extension wand. Use a strong ladder to reach high locations and start from the top of the wall.

Step 2: Prepare an Appropriate Cleaning Solution

Next, create a cleaning solution that’s suited for the sort of interior paint that was put on the wall. You might try using a multi-purpose cleanser like Selleys Liquid Sugar Soap. If you’re using a concentrated cleaner, ensure that a suitable quantity of water is added to the solution to dilute it before use.

Step 3: Wipe the Walls from Top to Bottom

It’s advisable to wipe the walls from top to bottom to avoid unclean water from leaking onto cleansed portions. Once you’re done cleaning with the solution, put a clean sponge or cloth in a pail of clean water, wring it thoroughly and wash the walls to eliminate any lingering residue.

Step 4: Remove Stubborn Spots

If there are any persistent stains, immerse the moist sponge in a dab of baking soda and massage the spots off. Other options you might try include using rubbing alcohol on a sponge or a melamine sponge.

How to Clean Mould Off Walls

Wear and tear is inevitable over time and may cause mould to develop on walls. It’s preferable to remove them in a timely way to avoid any health difficulties and allergies. To eradicate mould efficiently, use a solution of water and household bleach in a 4:1 ratio. Wearing gloves and goggles, immerse a sponge in the solution and wipe the mould. Let it rest for 3 to 5 minutes before wiping it off with a moist towel. Note that mould should be removed before any painting is done.

How to Prevent Mould on Walls

If there isn’t mould on the walls yet, it’s a good idea to take the following procedures before painting to prevent them from developing!

1. Apply an Antifungal Solution Before Painting

Before painting starts, try using an antifungal solution like Selleys Rapid Mould Killer on the walls and keep it on for the length recommended in the product description. This way, you won’t have to worry about the formation of fungi or algae on your walls. Ensure that the surface is dry before going on to the next step.

2. Apply a High-Quality Paint Coat

The kind and grade of paint you choose assist avoid mould development as well. An example would be Nippon Paint’s Odour-less Easy Wash since it offers antifungal, mould resistant and stain-resistant characteristics to provide a safe and long-lasting finish.

How to Clean Writing Off Walls

If your youngster is fostering his inner Vincent van Gogh, there are going to be occasions of them sketching or accidently getting traces on the walls. Here are several techniques you may attempt to remove crayon stains:

  • Spray with Selleys RP7 and wipe with a clean towel
  • Spray with multi-purpose cleanser and wipe with a moist towel
  • Dip a sponge in a solution of water and dishwashing solutions and wipe the stain in a circular motion
  • Use a melamine sponge

When washing the walls, start lightly since you may remove the paint or decolourise it if you rub too hard.

FAQs About Cleaning Walls

How to Wipe Soot Off Walls?

Soot may be created by numerous factors such as a flash fire on the kitchen stove, a fireplace that’s not well-ventilated or a burning candle. To wipe soot off walls efficiently, here’s what you need to do:

  • Wear goggles, a mask and gloves
  • Shift furniture out of the room or cover them with protective sheets
  • Open the windows to ventilate the room
  • Clean the walls using a vacuum and dusting brush
  • Dry cleaning: Use a sponge particularly developed to clear soot to go over the soot spots
  • Wet cleaning: Dip a clean sponge in a mix of water and grease-cutting dishwashing solutions and wipe the surface
  • Dry the walls with a clean towel
  • Vacuum the floor to wipe up any dried soot that has fallen off

How to Clean Textured Walls?

Textured walls such as brick contribute to the appearance of a house, but it may be tougher to maintain owing to the ridges and uneven surface. For textured walls, it follows the same technique as washing conventional walls, but more thorough cleaning is necessary to reach all the nooks and crevices. It’ll also be wise to run a spot test to determine whether the cleaning product employed responds nicely with your wall. The steps are as follows:

  • Get rid of the dust using a vacuum or dusting brush
  • Mix an appropriate cleaning solution
  • Wipe the walls from top to bottom with the cleaning solution
  • Wipe the walls again with a wet towel

How to Keep Walls Clean Longer?

There are a few things you can do in between big cleanings to preserve the cleanliness of your wall, including:

  • Avoiding smoke in the home e.g. smoking, burning candles, cooking
  • Spot cleaning quickly if you spot any traces or stains on the wall

Looking for a professional mould remover to clean my walls?

It depends on the condition of your wall. Dirt and minor mould and mildew can be easily cleaned and removed yourself. However, if the mould is serious and/or caused by a water leaking issue, it’s best to call us for assistance.