How to Spot Rising Damp

Why do I have rising damp in my home?

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Leading Causes of Rising Damp

Left untreated, rising damp is a threat to the structural integrity of your home, your health and the health of your family. Rising damp occurs when your home’s porous masonry structure has sucked up too much moisture from the ground. Stone, mortar and/or brick now holds water and destructive salts you don’t want it to.

As a result, you may have seen your painted walls flaking or blistering, tide-like stains, heavy mould growth or even structural damage. You might even feel sick. Want to know why your house has rising damp? Here are some of the most common reasons.


Rising Damp Reason No. 1:
A Corroded Membrane

During the initial construction phase of your home, the builders would have installed a damp proof coursing in your homes walls. The damp proof coursing shields your porous masonry from moisture and salts. It stops the damp and salts from rising in their tracks.

However, few damp courses last forever. Naturally, over decades, the bitumen, plastic, slate or tin membrane corrodes from age, wear and tear. Water and salts travel through to your walls and they soak it up like a sponge.


Rising Damp Reason No. 2:
Poor Drainage or Lack of Drainage

Broken and leaking pipes, unconnected downpipes, leaking roof gutters and nearby overflowing stormwater drains can all be causes of rising damp. Because these pipes aren’t functioning as they should, they’re effectively directing water around and into the foundations of your home.

The excessive water around and under your home has nowhere to escape. The only place it can go, is into the thirsty masonry to cause rising damp. You can also get rising damp if your home happens to be at the bottom of a slope with no drainage system to help run the rainwater off. Rising damp will also occur when the ground level has been raised higher than the original damp proof coursing level.


Rising Damp Reason No. 3: Poor Sub-Floor Ventilation

If your home is consistently ventilated it might be able to keep some of the superficial effects of rising damp at bay — for a little while. But if your home is poorly ventilated, it will trap the moisture your masonry walls have sucked out of the ground. This will put your home on a speedier path towards developing more serious symptoms of rising damp.

Need a solution for rising damp now?

If your home is suffering from rising damp, we’d love to help you fix it. We’ll start with a FREE inspection.

When you work with us, we promise

  • Free structural inspections
    We take a look at your home at no charge.
  • Personal, friendly service
    We’ll treat your home as if it’s ours.
  • Simple, transparent quotes
    Our quotes come with easy to understand computer-generated drawings that detail our proposed solution.
  • Minimal disruptions to your life
    Repairs to damaged walls shouldn’t take more than a day or two.
  • Minimal disruptions to your home
    We don’t damage your home by installing physical membranes.
  • Affordable pricing
    Unlike many other building companies, we only typically charge between $4,000 to $8,000 for damp repairs. See our full list of prices.
  • Permanent fixes
    We’re thorough in what we do, the walls we fix, stay fixed.
  • 10-year warranty
    In the rare case damp returns, we’ll be back too, at no extra cost.

Book a FREE inspection today!

Book a FREE inspection today!

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