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What is the application of expanded clay aggregate in green roofs and roof gardens ?

What is the application of expanded clay aggregate in green roofs and roof gardens ?

Expanded Clay Aggregate (ECA ®) is an ideal substrate for green roofs and roof gardens. Using a combination of ECA ® pebbles and soil is a great option for those looking to construct more eco-friendly buildings.

This is because ECA is much lighter, by volume than soil. When a large amount of soil is present on a roof, a high load may be transmitted to the rest of the building, which it may not be able to support. Using ECA ® keeps the static load low, enabling green roofs to be built even on structures with lighter-weight construction. And because ECA ® has a neutral pH, it has a minimal effect on the surrounding soil and plants.

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