How to Remove Mould From a Wall

Removing mould can be a messy business and the paints we will use to repair the surface later will be thick and highly likely to stain floors and carpets should the be spilt.  Remove any furniture from the room first or move it into a corner away from the area you are decorating. Thn lay a dust sheet to protect your carpet or floor. Our Seriously Good Cotton Rich Dust Sheet is ideal as it is polythene backed so no paint will penetrate through to your floors or furniture.

Check out our expert guide for more top tips on how to prepare your room for decorating. 

When you have finished protecting the area we more on to the most important step! Preparing the surface. First check the mould appears similar to the example in our video. If you see large black spots or have a particularly bad case we recommend contacting a professional decorator first. Some mould spores can cause illness so do not proceed if you are in doubt.

If everything looks safe use a fine sanding block to begin removing the mould. It can be a good idea to wear a dust mask at this point and open the windows to increase ventilation.

Next we need to kill the mould and prevent it from growing back.  Using an anti-mould spray is a great option, especially for larger or more stubborn areas of mould. For this patch we used some sugar soap and cloth to clean the walls thoroughly. At the same time we recommend you remove all the dust from sanding. When you are finished the wall should be smooth and mostly clear of mould. Any remaining spots will be covered in a later step.

Finally before you start painting finish preparing the area by using our Seriously Good Masking Tape to protect the skirting boards, plug sockets and other detail areas on the wall.  When everything is tapped up you can start to paint the primer.

You can find anti-mould paint made by many brands. All do a great job of protecting your walls from returning mould. We recommend reading what each brands anti-mould paint can handle and choose the best one for your specific project. However, one thing all anti-mould paints have in common is they are very thick, highly viscous paints.

To get the best results when applying this primer to your walls we recommend using our Interior woodwork range. Start by using the 2″ Ultimate Gloss brush to cut in with the primer around and plug sockets or light switches and along skirting boards. The masking tape will protect these detail areas from paint bleeding through. Work in 1 Meter segments with the brush, then switch to a Mini roller.

Use an Ultimate 4″ Gloss roller to apply the primer to the wall. Work on the small patch of wall you have already painted with the brush and blend the brushes area into the wall using the mini roller. The foam roller sleeves give a perfect smooth finish with more viscous paints such as the anti-mould primer.

When the priming coat is fully dry you can finish the room off with a top coat of emulsion paint from your favourite paint brand. We recommend following our How to paint a wall guide for more in depth advice on getting the perfect finish when painting the walls of your home.