Yes, you can use urban planter boxes on a rooftop with a waterproof membrane, but it requires careful planning to protect the roof structure. The key is creating a layered system that prevents damage. Start by consulting a structural engineer to verify your roof can support the added weight of planters, soil, and water. Place a protective layer, like a root barrier mat, directly on the membrane to shield it from abrasion and punctures. Ensure your planter boxes have adequate drainage holes to prevent water from pooling on the roof surface. It's also wise to use lightweight soil mixes to reduce the load. Elevating the planters slightly with feet can improve airflow and drainage. Regular inspections of the membrane underneath are crucial for early leak detection. By taking these precautions, you can create a thriving rooftop garden without compromising your waterproofing system.
Can I use urban planter boxes on a rooftop that has a waterproof membrane?
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