DOFF vs Soda Blasting: Which Paint Removal Method is Right for You?

Choosing the proper cleaning system is vital when removing paint from delicate or historic surfaces. Two of the most effective techniques used by Blast Clean Scotland are DOFF superheated water cleaning and soda blasting. While both are low-impact and environmentally responsible, they have distinct advantages depending on the surface and type of coating.

This guide explores the differences between DOFF and soda blasting to help you determine which solution is best for your paint removal needs.

What Is DOFF Cleaning?

DOFF cleaning is a superheated water system for heritage buildings and sensitive materials. The system heats water to 150°C and delivers it at low pressure, allowing for the safe removal of paint, biological matter, graffiti and more, without saturating the surface or causing damage.

It’s ideal for use on natural stone, brick, masonry, and other porous substrates where chemical-free cleaning is essential. DOFF is particularly effective at removing flexible paints and atmospheric pollutants while preserving the integrity of the surface.

What Is Soda Blasting?

Soda blasting uses compressed air to project sodium bicarbonate (baking soda) onto a surface. This soft, non-abrasive media is excellent for removing paint, grease, oil, soot and even odours. It is especially effective on timber, soft metals, glass, and fire-damaged materials.

Unlike harsher abrasive methods, soda blasting does not etch or damage the underlying substrate, making it a preferred option for sensitive surfaces like historic woodwork or delicate architectural features.

Key Differences

• Surface Compatibility: DOFF is better suited to stone, brick and masonry; soda blasting excels on metal, timber and fragile surfaces.
  
• Cleaning Method: DOFF uses heat and water, whereas soda blasting uses air and powder-like media. Each system removes coatings differently, offering unique benefits.
  
• Residual Impact: Soda blasting neutralises odours and contaminants—ideal for smoke-damaged interiors. However, DOFF is highly effective for sterilising surfaces affected by algae, moss and pollutants.
  

Which One Should You Choose?

• Choose DOFF for:
  
  • Historic stonework
    
  • Listed buildings
    
  • Brick façades
    
  • Graffiti removal on porous surfaces
    
• Choose Soda Blasting for:
  
  • Timber panelling and decking
    
  • Painted metal fixtures
    
  • Fire and smoke damage restoration
    
  • Automotive and marine paint removal
    

Expert Paint Removal Services in Scotland

At Blast Clean Scotland, we are highly experienced in DOFF and soda blasting systems. As one of Scotland’s longest-serving Rosette Approved Contractors, we tailor every project to suit the surface and condition, ensuring outstanding results with minimal disruption.

Do you need help deciding which paint removal method is right for your project? Contact us today for expert advice and a free, no-obligation quotation.