Do you have dampness on your terrace? Here’s what you need to know

12 Aug Do you have dampness on your terrace? Here’s what you need to know

Dampness on terraces is one of the most common causes of water leaks in homes, especially in areas with frequent rain or high humidity. Whether it’s a single-family home, a penthouse, or a residential building, if the terrace isn’t properly sealed, problems will soon appear.

Detecting them early and acting quickly can make the difference between a simple repair and an expensive renovation.

Most common causes of terrace dampness

Moisture doesn’t appear out of nowhere. It’s usually the result of construction flaws, poor maintenance, or natural wear over time. These are the 5 most common causes:

1. Worn-out or missing waterproofing
    This is the main cause. Without an effective waterproof layer, water penetrates easily.
2. Cracks or fissures in floors or walls
    Small cracks, if left untreated, allow water to seep deeper over time.
3. Open or poorly sealed joints
    The joints between materials are weak points if not properly treated.
4. Water accumulation due to poor drainage
    If water is not drained correctly, it pools on the surface and eventually seeps through.
5. Sudden temperature changes
    Expansion and contraction of materials can lead to cracks over time.

How to detect dampness before it becomes a problem

In many cases, the first signs of moisture can go unnoticed or be mistaken for minor issues, delaying proper treatment. That’s why it’s important to watch for visible symptoms such as dark or yellow stains on ceilings and walls, tiles lifting or detaching, persistent musty smells, peeling paint, and the appearance of mold in corners or crevices. If you notice any of these signs, the best course of action is to consult a professional as soon as possible to avoid more serious damage.

What can you do to prevent dampness?

Prevention is always easier (and cheaper) than repair. Here are some practical tips to keep your terrace free from dampness:

• Check the condition of the waterproofing every 1 to 2 years.
  
• Clean the drains frequently to avoid blockages.
• Apply sealant to joints when you notice signs of wear.
• Avoid placing heavy or watertight objects that prevent proper water flow.
• Make sure your terrace has enough slope to drain water naturally.

These small actions can extend the lifespan of your terrace and keep moisture at bay.

Already have dampness? These are the most effective solutions

If the problem is already present, don’t worry — there are effective solutions for every type of moisture issue. The key is to act quickly and wisely.

Possible solutions depending on the type of dampness

• Complete waterproofing with liquid membranes: ideal for large areas without removing the existing flooring.
• Asphalt sheets or geotextiles: very durable, though they usually require construction work.
• Spot repairs with sealants or resins: perfect for cracks or localized leaks.
• Interior anti-damp treatments: if mold or stains have already appeared inside the house, these must be treated as well.

What matters most is that a professional assesses the exact source of the problem to apply the right solution.

Don’t let dampness ruin your terrace: Trust the experts

Although there are temporary solutions you can apply yourself, terrace dampness is a problem that often returns if not resolved at its source. That’s why relying on a specialized company is the safest and most effective option.

At Humilogic, we are experts in detecting, diagnosing, and treating terrace dampness. Our technical team evaluates each case individually, using advanced methods and high-quality materials to deliver long-lasting and guaranteed solutions.

Do you see stains, mold, or signs of water infiltration? Contact us and let us offer you expert advice with no obligation.