Why Regular Moss Treatment is Essential for Your Concrete or Terracotta Roof

Your roof is your home’s first line of defence against the elements, but over time, moss, mould, and lichen can compromise its integrity. To prevent costly repairs, we recommend treating your roof with KilWell moss, mould, and lichen treatment every two years. Here’s why:

The Hidden Damage to Your Roof

If left untreated, moss, mould, and lichen burrow into your roof tiles, causing them to lose their protective coating. This makes the tiles more porous, allowing moisture to seep in, adding significant weight, and leading to structural issues.

• Concrete Roofs: The roots of moss penetrate the paint coating, stripping it away. Over time, the concrete surface erodes, weakening the tiles and making them prone to breakage.
• Terracotta Roofs: Similar to concrete, the hardened surface wears away, making tiles softer and more fragile. The extra water retention can cause the roof’s supports to buckle under pressure.

Why Your Roof Might Be “Stressed”

A deteriorating roof coating allows water to soak into the tiles rather than running off. This added weight leads to movement in the roof structure, causing cracked mortar and broken tiles. The result is a damp home, increased mould growth, and ongoing structural stress.

The Solution

Regular moss treatment prevents growth before it takes hold, preserving your tiles and preventing costly structural issues. For long-term protection, re-coating your roof ensures water runs off the surface instead of soaking in, keeping your home safe, dry, and structurally sound.

Want a quick overview of how moss treatment works and why it matters? Download our handy flyer here – it’s packed with all the essentials.