Why Regular Terrace Cleaning Matters

A terrace is exposed to the elements all year round. Rain, frost, sunlight, and dirt all leave their mark:

• Moss and algae create green, slippery layers that are both unattractive and unsafe.
• Lichens and mould can settle in joints and on rough surfaces.
• Leaves and soil cause dark stains and discoloration.

Beyond appearance, safety plays an important role. Smooth surfaces increase the risk of slipping, especially in wet conditions. Regular cleaning also extends the lifespan of materials by preventing dirt from permanently embedding itself in the surface.

Terrace Cleaning by Material

Not all terraces are the same. Depending on whether yours is made of stone, wood, or tiles, different cleaning methods apply.

Cleaning Stone Terraces

• Pressure washer: Quickly removes dirt and moss, but use caution with natural stones like sandstone or limestone, which can crack under high pressure.
• Gentle cleaning: Sweep thoroughly first, then scrub with a brush and a special stone cleaner. This gently removes dirt and prevents new buildup.
• Home remedy: A mix of soda and warm water can help. Avoid vinegar on limestone, as it can damage the surface.

Cleaning Wooden Decking

• No pressure washer: Strong water jets can roughen the wood fibres and cause lasting damage.
• Wood cleaner: Use dedicated wood cleaners to remove dirt and prevent discolouration. Allow the surface to dry thoroughly afterward.
• Care: Apply wood oil after cleaning to protect against moisture and bring out the natural grain again.

Cleaning Tiled Terraces

• Clean the joints: Use a joint brush to remove buildup. For stubborn dirt, apply a specialised grout cleaner.
• Limescale stains: In hard-water areas, use a mild descaler.
• Safety: Regularly check for slip resistance – tile surfaces can become slippery over time.

Professional Terrace Cleaning – When Is It Worth It?

Sometimes cleaning reaches its limits. Hiring professionals can make sense in these cases:

• Heavy soiling: Moss, lichens, or oil stains have deeply penetrated the surface.
• Delicate materials: Natural stones or certain wood types require professional knowledge to avoid damage.
• Saving time: Professional cleaning saves you effort and delivers long-lasting results.

In Switzerland, specialised cleaning companies like Cleanova offer tailored solutions – from gentle cleaning to long-lasting surface sealing.

Practical Tips from Markus Bütler, Owner of Cleanova

• Sweep regularly: Remove loose dirt before it settles.
• Start gently: Always begin with mild cleaners and soft brushes; increase intensity only if needed.
• Test first: Try any cleaner on an inconspicuous spot, especially for natural stone and wood.
• Let it dry: Ensure proper ventilation and avoid standing water after cleaning.
• Protect and seal: Use suitable oils or sealants to extend durability and make future cleaning easier.