Houston Outdoor Materials Decision Matrix
A working comparison of the materials we actually specify for decks, overhead structures and hardscape in the Houston area. It is deliberately qualitative: relative tendencies and appropriate uses, not invented service-life numbers or prices.
Site conditions and the final specification control material selection. Sun exposure, drainage, span, span direction, soil movement, access and how the space will actually be used can each override a general preference in this table.
| Material | Maintenance burden | Heat tendency | Moisture tolerance | Appearance | Appropriate use | Repairability | Relative cost tier |
|---|---|---|---|---|---|---|---|
| Ipe | High if you want the colour kept — oiling on a schedule. Low if you accept a silver-grey patina. | Dense, dark surface; gains heat in full sun like most dark decking. | Very high tolerance. Dense enough to shrug off Houston humidity swings with little movement. | Deep brown, tight grain, minimal knots. Reads formal. | Exposed decks and stair treads where hardness and longevity matter most. | Good — boards are replaceable, but pre-drilling and stock matching take time. | Premium |
| Garapa | Similar to ipe: oil to hold the honey tone, or let it grey out. | Lighter tone than ipe, so it tends to run cooler underfoot than a dark board. | High tolerance; a dense hardwood, though not as dense as ipe. | Light golden brown, more open grain. Warmer, less formal than ipe. | Decks where the ipe look is too dark or too dense for the budget. | Good, same hardwood logic as ipe. | Upper-mid |
| Cedar | Regular finish maintenance if colour matters; naturally durable but softer than the hardwoods. | Low-density and light in tone — one of the more comfortable timbers in sun. | Good tolerance for above-ground structure; keep end grain and connections detailed to shed water. | Warm, knotty or tight-knot depending on grade. Traditional. | Pergolas, patio covers, carports and screens — overhead structure rather than walking surface. | Excellent — easy to work, easy to source, members can be swapped. | Mid |
| Composite / capped composite | Low. Cleaning, not sanding and staining. No re-finishing cycle to hold colour. | Tends to run warmer than timber in direct sun, and darker colours more so. | High tolerance — the reason it suits shaded, damp yards. Substructure ventilation still matters. | Consistent colour, wood-look embossing. Uniform rather than characterful. | Large deck surfaces where low upkeep outranks natural material. | Board-level replacement is straightforward; colour matching an older deck is the constraint. | Mid to Upper-mid |
| PVC decking | Lowest of the decking group — no organic content to feed rot or mould. | Similar exposure behaviour to composite; light colours help. | Highest tolerance of the decking group. Suits poolside and shaded low spots. | Most synthetic-reading of the options, though the better lines are convincing. | Pool surrounds, shaded yards, anywhere standing moisture is a fact of life. | Good; again limited by matching older stock. | Upper-mid to Premium |
| Aluminium (structure / louvres) | Very low. Powder-coated finish, no re-finishing cycle. | Conducts heat, so exposed members get hot; not a walking surface. | Excellent — does not rot, and corrosion resistance is high with an intact finish. | Clean, modern, thin sections. Can look out of place on a traditional bungalow. | Louvred covers, modern pergolas, long spans with slim members. | Component-based; damaged sections are replaced rather than repaired. | Upper-mid to Premium |
| Welded steel (structure) | Depends entirely on the coating. Keep the finish intact and it lasts; let it fail and it rusts. | Conducts heat like aluminium. Structure only. | Good when properly coated and detailed so water cannot sit in sections. | Slim, strong, industrial. Suits modern and warehouse-adjacent architecture. | Long spans, cantilevers, carports and shade structures with minimal posts. | Very good — steel can be cut, welded and re-coated in place. | Premium |
| Concrete pavers | Low. Occasional joint sand top-up and cleaning; individual units can be lifted. | Ground-level surface; lighter colours are noticeably more comfortable barefoot. | Good, provided base and fall are right. Water leaves at the surface. | Wide format and colour range; pattern does the design work. | Patios, walkways and driveways where a unit surface can flex with clay soil movement. | Best in class — lift, fix the base, re-lay the same units. | Entry to Mid |
| Permeable pavers | Periodic cleaning of the open joints so they keep taking water. Skipping it defeats the system. | Comparable to standard pavers of similar colour. | Designed for it — water passes through the joints into an open-graded base rather than running off. | Similar to standard pavers, with visible wider joints. | Yards with runoff or ponding problems, and driveways where reducing surface runoff is the goal. | Same unit-level advantage as standard pavers. | Mid to Upper-mid |
| Natural stone (travertine, limestone) | Moderate — sealing and joint upkeep depending on stone and setting method. | Light stone is among the coolest hardscape underfoot in sun. | Good; stone selection and setting bed matter more than the stone name. | The most material-forward option. Every piece differs. | Pool decks and feature patios where finish quality is the point. | Depends on setting method — sand-set lifts easily, mortar-set does not. | Premium |
How to use this
Read down the column that constrains your project first. If nobody in the house wants a maintenance schedule, start at maintenance burden. If the yard holds water, start at moisture tolerance and look hard at the permeable row. If the structure has to span a long distance with few posts, start at appropriate use and the metal rows.
Material is only half of a specification. The substructure, fastening system, base preparation and drainage design determine whether the material performs — a good board on a bad frame is a bad deck. Our planning and build sequence reference covers the order those decisions belong in.
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