As an AI language model, I don't have personal preferences or feelings. However, here are some popular materials that you might consider for a strong and durable roof garden:
1. Lightweight soil mix: A lightweight soil mix is essential for a successful roof garden as it helps to reduce the overall weight of the garden. It's a combination of organic matter such as compost, coir, or peat moss, and inorganic matter such as perlite or vermiculite.
2. Drainage system: A proper drainage system is necessary to prevent waterlogging and root rot. You can use drainage mats, granular drainage layers, or drainage pipes to provide an efficient drainage system for your roof garden.
3. Waterproofing membrane: A high-quality waterproofing membrane is essential to prevent water from penetrating into the roof structure. The membrane should be durable and flexible to withstand weather changes.
4. Container or planter material: Choose planters made of a durable material such as plastic, fiberglass, metal, or concrete.
5. Irrigation system: An irrigation system is crucial to keep your plants healthy and hydrated. You can use drip irrigation, sprinkler systems, or manual watering methods.
6. Shade protection: If your roof garden is exposed to direct sunlight, you might consider installing a shade cloth or retractable roof to protect your plants from excessive heat and UV rays.
7. Wind protection: Strong winds can damage your plants and cause soil erosion. Consider installing a windbreak such as a living wall, fence, or trellis to protect your plants from strong winds.
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