DOFF Cleaning Heritage Suitable Steam Cleaning

At Heritage Stone Cardiff, we provide specialist DOFF steam cleaning for listed buildings, historic masonry, and sensitive stone surfaces across Cardiff and the surrounding areas.

Unlike aggressive pressure washing methods, DOFF cleaning uses superheated low-pressure steam to gently remove dirt, biological growth, paint residues, atmospheric staining, and pollutants without damaging the underlying surface.

This makes it one of the safest and most effective cleaning systems available for heritage properties and traditional masonry.

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What Is DOFF Cleaning?

The DOFF cleaning system superheats water to temperatures of up to 150C while operating at low pressure. This allows surfaces to be cleaned thoroughly without saturating the masonry or causing unnecessary damage.

DOFF cleaning is widely used throughout the conservation sector and is suitable for:

Suitable for:

  • Bath stone
  • Limestone
  • Sandstone
  • Brickwork
  • Terracotta
  • Historic masonry
  • Listed buildings
  • Churches and heritage properties

The system is highly effective at removing:

  • Algae, moss and biological growth
  • General dirt and staining
  • Carbon staining and pollution
  • Paint residues
  • Organic matter
  • Surface grime

Why Low Pressure Matters

Traditional pressure washing can permanently damage historic masonry by eroding the protective face of the stone and forcing water deep into the structure.

DOFF cleaning works differently.

The combination of low pressure and high temperature allows contaminants to be removed carefully while preserving the integrity of the building material. This makes it particularly suitable for older properties where protecting original fabric is essential.

Suitable for Listed & Heritage Buildings

We understand the importance of using sympathetic methods when working on older and historic buildings.

Our approach focuses on:

  • Minimal intervention
  • Traditional conservation principles
  • Protecting original materials
  • Controlled and careful cleaning methods

DOFF cleaning is commonly specified for conservation and listed building projects due to its gentle and controlled nature.

Our Approach

Every building responds differently to cleaning. Before any works begin, we assess the condition of the masonry, identify the cause of staining or growth, and determine the most suitable cleaning approach.

We never believe in aggressive one method fits all cleaning.

Our focus is always on achieving the best possible result while protecting the long-term condition of the building.

Get in Touch

If you are looking for safe, heritage-appropriate exterior cleaning for stone or brickwork, we would be happy to discuss your project.

Get in Touch

If you are looking for safe, heritage-appropriate exterior cleaning for stone or brickwork, we would be happy to discuss your project.

Contact Us