Do you suffer from a damp in your property?

How Much Does Damp Proofing Cost in 2024?

Damp proofing is an essential step to protect your property from moisture-related issues, such as rising damp, penetrating damp, or condensation. Left untreated, damp can cause structural damage, unhealthy living conditions, and decreased property value. In 2024, the cost of damp proofing depends on the type of damp affecting your property, the treatment required, and the extent of the problem. Here’s a comprehensive guide to help you understand the costs involved.


Types of Damp and Associated Costs

The cost of damp proofing largely depends on the type of damp you’re dealing with:

  • Rising Damp
    • Cause: Moisture from the ground rises through the walls due to a damaged or non-existent damp-proof course (DPC).
    • Treatment: Injection of a chemical DPC or installation of a new membrane.
    • Cost: £50-£70 per linear meter for DPC injection. Full wall replastering may add £300-£500 per room.
  • Penetrating Damp
    • Cause: Water seeps through walls due to external defects like cracked brickwork, faulty gutters, or poor sealing.
    • Treatment: Repairing external damage, applying water-repellent coatings, or adding insulation.
    • Cost: £250-£1,500, depending on the extent of repairs and coatings required.
  • Condensation
    • Cause: Poor ventilation causes moisture buildup inside the property.
    • Treatment: Improved ventilation through extractor fans, air bricks, or dehumidifiers.
    • Cost: £200-£2,000, depending on the system installed.

Additional Factors Influencing Costs

  • Size of the Property
    Larger properties or rooms require more materials and labor, increasing the overall cost.
  • Extent of Damage
    Severe damp problems that have caused structural damage or mold may require additional treatments like timber repairs or full wall renovations.
  • Location
    Costs may vary based on your location, with higher prices in urban areas like London compared to rural regions.
  • Professional Expertise
    Hiring a certified damp proofing specialist ensures quality work but might cost more upfront. Look for contractors accredited by organizations like the Property Care Association (PCA).