Definition
Any non-natural solid surfaces, such as concrete, asphalt, tile, sandstone, limestone, metal, glass, brick or clay pavers.
Layer details
AI Packs | Surface Permeability |
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| Status | Production |
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| Includes | - Tree overhang on hard surfaces, as long as you are confident the surface is covered with one of the materials mentioned in the definition (e.g., part of a road with tree overhang)
- Courtyards
- Unroofed decks
- Area around a swimming pool, provided it is made of a hard-surface material. This must exclude the area inside the pool.
- Building tops that are designed for walking on such, as roof-top courtyards and raised carparks
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| Excludes | - Polymeric surfaces
- Interior of the pool
- Normal roofs
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Product-specific Terms | |
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Examples
