| Concrete pavers | Suitable for many climates. In freeze-thaw regions, select pavers rated for local conditions and install a stable, well-drained base. | Use a permeable joint system where appropriate, or slope the paved area to direct water away from buildings. | Requires excavation and a compacted aggregate base. Can be installed over soil; individual units are replaceable if settlement occurs. | Periodic joint-sand replacement may be needed. Surface can become slippery with algae when damp, depending on texture and upkeep. |
| Natural stone | Performance varies by stone type. Choose material suitable for local temperature changes and outdoor exposure. | Provide a free-draining base and suitable slope. Avoid trapping water beneath the stone, especially in freezing climates. | Needs a firm, even base and careful setting. Some stone types require a mortar bed over a sound concrete slab. | Sealing may be recommended for some stones. Porosity, surface texture, and color can vary between pieces. |
| Exterior porcelain tile | Choose tile specifically rated for outdoor use and the expected temperature range. A slip-resistant finish is important in wet areas. | Requires effective surface drainage and an installation system designed for exterior exposure; standing water can damage the assembly. | Best installed over a rigid, stable substrate. The slab or base must be properly prepared, and movement joints should be planned. | Generally easy to clean. Correct exterior-rated tile, setting materials, and installation are essential to reduce cracking or debonding. |
| Wood decking | Can be used in varied climates, but moisture, sun exposure, and temperature swings affect movement and service life. | Deck boards need gaps for water to drain and airflow beneath the deck. Keep the framing from remaining wet. | Requires a structurally sound frame. Ground-level decks need careful detailing to maintain ventilation and avoid soil contact. | Needs periodic cleaning and may require a suitable finish. Boards can weather, splinter, or change color over time. |
| Composite decking | Designed for outdoor exposure, but surface temperature and expansion vary by product and color. Follow the specified climate and installation guidance. | Allow water to drain through board gaps and provide airflow below. Avoid blocking drainage at the deck perimeter. | Requires a compatible, level supporting frame and the specified fastening system. Board spacing must allow for expansion and contraction. | Usually needs routine washing rather than staining. Can become hot in direct sun; check surface temperature expectations for the site. |
| Gravel or crushed stone | Works in many climates when the aggregate and base are suited to local conditions. Loose material may shift during heavy rain or freeze-thaw cycles. | Often drains well through the surface, but grading and a suitable base are still needed to prevent runoff, erosion, or ponding. | Requires soil preparation, compaction, and edge restraint. A separation layer may help limit mixing with the underlying soil. | May need raking and occasional replenishment. Less suitable for smooth wheelchair access or areas where loose stone can migrate. |
| Poured concrete | Suitable for many outdoor uses when designed for local weather. Freeze-thaw areas may require appropriate concrete mix and construction details. | Grade the slab to move water away from structures. Plan drainage before pouring; water cannot drain through an intact slab. | Needs a properly prepared, compacted base and control joints. Existing soil movement or inadequate preparation can contribute to cracking. | Durable, but cracks can occur. Broom-textured or otherwise slip-conscious finishes are useful where the surface may get wet. |