Waterproofing terraces: effective methods for lasting protection

Rainwater can seep into micro-cracks in concrete and, over time, compromise the integrity of the entire structure. Some of the main problems caused by lack of proper waterproofing are:‍

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• Infiltration into the rooms below, with damage to walls and ceilings.
• Formation of cracks and fissures, which worsen with temperature changes.
• Degradation of concrete, with detachment of coating and corrosion of reinforcement.
• Presence of mold and moisture, affecting the healthiness of indoor environments.

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Depending on the needs and characteristics of the structure, different waterproofing technologies can be opted for:

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1. Waterproofing with Crystallizing Additives.

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The use of crystallizing admixtures for concrete, such as Drymix and Drymix Ultra, is an innovative and effective solution for waterproofing a terrace already in the construction phase. These admixtures react with the water in the concrete, forming insoluble crystals that capillary seal the structure and prevent the entry of moisture.

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Advantages:

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• Permanent protection from moisture
• Improving the chemical and mechanical strength of concrete
• Self-sealing of microcracks up to 0.5 mm

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2. Waterproofing with Liquid or Cementitious Membranes.

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Liquid or cementitious waterproofing membranes are flexible solutions, ideal for existing terraces or those subject to structural movement.

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Types of waterproofing membranes:

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• Polyurethane membranes: elastic, UV-resistant and wear-resistant
• Acrylic membranes: easy to apply and suitable for walkable surfaces
• Two-component cementitious membranes: highly adherent and resistant to negative pressures

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3. Waterproofing with Bituminous Sheaths

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Bituminous membranes are one of the most widely used traditional methods of waterproofing terraces. They are composed of layers of polymer-modified bitumen applied hot or cold to the surface.

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Advantages of bituminous sheaths:

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• High mechanical strength
• Good durability
• Suitable for large surfaces

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The choice of the most suitable waterproofing technology depends on several factors:

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• Type of terrace (walkable or non-walkable)
• Status of the structure (new or in need of renovation)
• Climatic conditions in the area
• Budget available

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To ensure a lasting result, it is essential to rely on experienced professionals and use high-quality materials such as those offered by Drykos, a leader in the waterproofing industry.

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Protecting a terrace from seepage is essential to preserve the structure over time and reduce maintenance costs.

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The use of crystallizing additives, waterproofing membranes or bituminous sheathing provides an effective and lasting result, improving the safety and comfort of the environments below.