The Ultimate Guide to Anti-Mould Paint: Why Winter Is the Worst Time for Mould and How to Stop It

By Siramico Coatings | Where functionality meets practicality

Winter is the season of cosy nights, warm blankets… and unfortunately, mould. 

As temperatures drop and windows stay closed, UK homes trap more moisture than any other time of year. The result? Condensation, damp patches, black spots on ceilings and walls and a growing frustration for homeowners trying to keep their spaces fresh and healthy.

After 40+ years of manufacturing high-performance, functional paints, we’ve seen the same pattern every winter. But the good news? With the right preparation and the right product, mould isn’t inevitable.

Here’s everything you need to know and how Siramico’s Anti-Mould Paint stops the problem at its source.

Why Mould Gets Worse in Winter

Mould thrives in cold, damp, poorly ventilated environments. In winter:

• Windows stay closed, trapping moisture inside
  

• Showers, kettles, cooking and heating increase humidity
  

• Cold external walls create condensation
  

• Bathrooms and kitchens see rapid mould growth due to steam
  

• Bedrooms often develop mould behind beds or wardrobes
  
  

This combination makes winter the perfect breeding ground for mould spores.

What Is Anti-Mould Paint and How Does It Work?

Siramico’s Anti-Mould Paint is a durable, moisture-resistant coating designed to prevent mould from forming, not just cover it.

It works by:

• Creating an inhospitable surface for mould spores
  

• Blocking moisture penetration
  

• Resisting condensation buildup
  

• Providing a washable, easy-clean finish
  
  

Unlike ordinary paint, which mould can grow straight through, Anti-Mould Paint creates a long-lasting protective shield.

Where Anti-Mould Paint Works Best

Apply in any room at risk of damp or humidity:

• Bathrooms
  

• Kitchens
  

• Bedrooms
  

• Hallways and stairwells
  

• Behind furniture
  

• Window reveals
  

• Laundry rooms
  
  

If mould has appeared once, it will appear again unless the surface is properly treated.

How to Prepare Your Wall Before Painting

Preparation matters. Before applying Anti-Mould Paint:

1. Remove existing mould with a fungicidal wash
   

2. Allow the wall to fully dry
   

3. Treat any stains with Siramico’s Damp Seal if needed
   

4. Apply 2 coats of Anti-Mould Paint
   
   

Once done, you’re protected for years — even through the toughest British winters.

Why Choose Siramico’s Anti-Mould Paint?

• British-made for UK homes
  

• Ultra-durable, washable finish
  

• Long-term mould protection
  

• Eco-conscious formulas
  

• Trusted for over 40 years
  
  

Stay Mould-Free All Winter

Don’t wait until mould spreads. Treat your home early and enjoy a healthier, fresher environment throughout the colder months.