Types of Damp and How to Combat Them

Damp is a silent enemy in Marbella that can affect any type of building. It’s not just an aesthetic issue; it can compromise the structure of your property and the health of its occupants. If you’ve noticed stains, mould, or peeling walls, you’re likely dealing with damp. In this article, we explain the different types of damp and how to tackle them effectively. At Aragón Constructores, we explain how to identify them, as well as the steps to follow to combat them.

What is Damp, and Why Does it Occur?

Rising Damp

Rising damp happens when water from the ground travels upwards through porous materials such as bricks or mortar. It is more common in older buildings or properties with inadequate waterproofing at the base.

• How to identify it:
  • • Stains or peeling paint at the bottom of walls.
    • Efflorescence (white powdery deposits) on the surface.
    • Deterioration of paint or plaster.
• How to combat it:
  • • Chemical injections: Injecting waterproofing resins into the walls to create a damp-proof barrier.
    • Damp-proof courses: Installing impermeable layers at the base of affected walls.
    • Breathable renders: Applying special plasters to allow moisture to evaporate without causing further damage.

Rising damp happens when water from the ground travels upwards through porous materials such as bricks or mortar. It is more common in older buildings or properties with inadequate waterproofing at the base.

Penetrating Damp

This type of damp occurs when water directly infiltrates a building from the outside. It is often caused by cracks in walls, poorly sealed roofs, or inadequate drainage systems.

• How to identify it:
  • Cracks in walls or ceilings.
  • Wet or damp walls after rainfall.
  • Localised mould growth in specific areas.
• How to combat it:
  • Surface waterproofing: Applying waterproof membranes or paints.
  • Crack repair: Sealing cracks with specialised mortars or resins.
  • Perimeter drainage systems: Installing drains to redirect water away from the building’s foundation.

Condensation Damp

Condensation occurs when moisture in the air comes into contact with cold surfaces, such as poorly insulated walls or single-glazed windows. This is common in homes with inadequate ventilation.

• How to identify it:
  • Fogged-up windows.
  • Black mould in corners or ceilings, especially in kitchens and bathrooms.
  • A persistent feeling of dampness in the air.
• How to combat it:
  • Improve ventilation: Install extractor fans or open windows regularly.
  • Thermal insulation: Add insulating panels and double-glazed windows.
  • Use dehumidifiers: These reduce the air’s moisture content.

Why is it Important to Resolve Damp Problems?

Ignoring damp can lead to severe consequences:

• Structural damage: Damp weakens construction materials, affecting foundations and walls.
• Health risks: Mould and fungi caused by damp can trigger allergies, asthma, and respiratory problems.
• Financial impact: Properties with damp lose value and incur higher maintenance costs over time.

At Aragón Constructoers, we provide tailored solutions, ensuring long-lasting results.

Also read the following article: FALSE CEILINGS: WHAT YOU NEED TO KNOW.