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What coating to use for green terraces



Best Coatings for Green Terraces

To cover green terraces, it is advisable to use weather-resistant and waterproof coatings capable of protecting the underlying structure and ensuring long-lasting durability. Here are some types of coatings suitable for green terraces:

  • Bituminous Membranes: Made of modified bitumen with polymers, these offer good mechanical resistance and root protection. They can be applied hot or cold.
  • Synthetic Membranes: PVC, TPO, or EPDM membranes are lightweight, flexible, and durable. They can be hot welded or adhered with specific adhesives for a perfect seal.
  • Waterproof Resins: Such as epoxy or polyurethane resins, offer effective protection against water and weather agents. They are versatile and can be applied on various surfaces.
  • Waterproof Paints: Available in different formulations like acrylic or silicone resins, they create a protective film preventing water from penetrating the support.

Before choosing the coating, it is important to evaluate the green terrace's characteristics, such as sun exposure, vegetation type, and intended use. Make sure to carefully follow the manufacturer's instructions for a correct and long-lasting application.

Top Materials for Green Terrace Coatings

The best materials for coating green terraces include:

  • Waterproof Membranes: Essential to protect the underlying structure from moisture and ensure the green terrace's durability. Membranes can be PVC, modified bitumen, EPDM, or TPO.
  • Geotextile: Placed above the waterproof membrane, reduces abrasion and protects the membrane from weather agents.
  • Drainage Layers: Help eliminate excess water, avoiding harmful stagnation. They can consist of gravel, expanded clay granules, or draining geocomposites.
  • Filter Layers: Placed above the drainage layers to prevent clogging with soil or plant roots.
  • Soil: Should be lightweight, fertile, and well-draining to promote plant growth.
  • Adapted Plants: Choose plant species suitable for the green terrace's environmental conditions, such as wind resistance, drought tolerance, and limited soil depth.
  • Irrigation System: Fundamental for ensuring proper plant hydration, it can be drip or micro-irrigation.
  • Surface Finishes: Like pebbles, decorative stones, or wood, to enhance the aesthetic and functionality of the green terrace.

By using the mentioned materials and following best practices, it is possible to create a resilient, functional, and aesthetically pleasing green terrace.

How to Choose the Coating for a Green Terrace

To select the ideal coating for a green terrace, consider several factors influencing the material's durability and functionality. Here are some key points to consider:

  • Weather Resistance: The coating should withstand external weather conditions like rain, snow, sun, and wind to ensure long-term durability without deterioration.
  • Drainage: The material should have good drainage capabilities to avoid water stagnation that could damage both the coating and plants.
  • Breathability: Ensure the coating allows the terrace to "breathe," avoiding moisture and condensation that could lead to mold and rot.
  • Safety: Choose a non-slip material to prevent accidental falls, especially in rainy or humid conditions.
  • Maintenance Ease: Opt for a low-maintenance and easy-to-clean coating to keep the terrace tidy with minimal effort.
  • Aesthetics: Lastly, consider the visual aspect of the coating and ensure it integrates well with the greenery and overall terrace style.

Considering these points will help you choose the most suitable coating for your needs, creating a welcoming and functional green terrace.

Specific Coatings for Green Terraces

There are specific coatings designed for green terraces that offer optimal protection and durability in this environment exposed to weather agents and moisture. Consider these important details:

  • Weather Resistance: Coatings for green terraces must be waterproof and resistant to rain, snow, and UV rays to ensure long-term durability and protect the underlying structure.
  • Drainage: The coating should promote proper drainage of rainwater to avoid stagnation that could damage both the coating and the green terrace substrate.
  • Breathability: The coating should allow the green terrace to breathe, facilitating air exchange and maintaining a healthy environment for plants.
  • Root Protection: Some coatings are designed to protect the underlying structure from plant roots, preventing damage and ensuring terrace stability over time.

Ensure to choose a specific coating for green terraces that meets these requirements and always consult a professional to guarantee the correct installation and maintenance of your rooftop garden project.





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