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Concrete and stone can be highly durable outdoors, but weight, surface treatment, drainage, edge detailing and installation access should be considered. They are especially useful where permanence, stability and architectural character are priorities. Open this answer

Use cleaners compatible with the specific stone and avoid acids on acid-sensitive materials such as marble. Periodic sealing may be appropriate for porous stone. Open this answer

Many stones can perform very well outdoors when correctly selected, detailed and finished. Porous or sensitive stones may need sealing and additional care in wet, polluted or freeze-thaw environments. Open this answer

Consider weight, slab thickness, support, edge safety, base conditions, drainage, access and whether the stone surface becomes slippery or hot in the intended location. Open this answer

Granite, sandstone, marble and other natural stones may be used depending on design and climate. Each stone differs in porosity, strength, staining behaviour, texture and maintenance requirements. Open this answer