Material comparison
Metal vs. wood pergolas — cost, upkeep, and desert reality
Aluminum, steel, and timber all build good shade structures in the Valley. What separates them is how far they span, what they'll ask of you in year seven, and how they sit against your architecture.
The honest version: No frame is maintenance-free. Aluminum trades some span and warmth for the lightest upkeep. Steel buys the longest clear spans and asks you to protect the coating. Timber gives the best look and expects a restain every few years. Choose the upkeep you'll actually do.
- AZ ROC 211530 · 347738 · 341002 · 340966
- Arizona-built since 2005
- President, Southwest Hardscapes Association
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Side by side
| Attribute | Aluminum | Steel | Wood |
|---|---|---|---|
| Planning range (Phoenix metro) | $5,500 – $18,000 fixed-roof aluminum; $22,000 – $85,000+ if the roof is motorized louvered | Priced with the engineered structure — typically above comparable aluminum for the same span | $8,500 – $32,000 for an AE custom timber pergola in cedar, Douglas fir, or stained pine |
| Look | Clean, uniform, factory-finished. Wood-grain textures and smooth modern finishes are both available. | Slim members and long clear runs — the modern, structural look. | Warmest and most detailed: corbels, rafter tails, stained ceilings, real shadow lines. |
| Span and posts | Manufactured systems publish span, load, and wind limits that must be followed; wide openings usually mean more posts or heavier beams. | Longest clear spans and the fewest posts for large covered areas. | Shorter spans than steel at the same member depth, so expect more posts on a wide cover. |
| Maintenance | Lowest routine upkeep — rinse the finish and avoid abrasive cleaners per the manufacturer's care instructions. | Coating is the maintenance item; touch up scratches before corrosion starts, especially near pools and misters. | Refinishing on a schedule set by the finish manufacturer. Arizona UV shortens recoat intervals; our timber ramadas are typically restained every 3–5 years. |
| Weathering | Doesn't rust. Finish quality over time varies by manufacturer and warranty. | Rusts where the coating is breached — a maintenance item, not a mystery. | Checking, greying, and movement on exposed members are normal weathering, not defects. |
| Roof options | Widest catalog: lattice, solid, insulated foam-core panels, motorized louvers, screen and sunroom enclosures. | Metal roofing, decking, or a manufactured panel set on the engineered frame. | Slats, tongue-and-groove decking, metal roofing, or fabric — detailed to the design. |
| Heat under the structure | Depends on the roof panel far more than the frame. Insulated panels are the answer to 'shaded but still hot.' | Same — the roof assembly and ventilation drive comfort, not the frame metal. | Same. Timber ceilings feel warmer visually, but shade coverage and airflow do the actual work. |
| Install reality | Manufactured components, faster install, dealer-supplied warranty terms. | Heavier structure, larger footings, more site work. | A permanent built structure — permitting, engineering, and inspection are part of the price and timeline. |
Phoenix-metro planning ranges for AE work — not quotes. Span, attachment, engineering, footings, finish, and integrated features decide the number in the signed proposal.
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Choose aluminum when
- Low maintenance is the priority and you'd rather clean than refinish.
- You want the widest roof catalog: lattice, solid, insulated panels, louvers, screen, or sunroom enclosure.
- The look is contemporary or you want a factory finish that holds color in AZ UV.
- Budget favors the $5,500 – $18,000 fixed-cover band.
Want a number for your own property?
Tell us the space and we'll come back with a real range for your site — no pressure, no "call for pricing."
03
Choose steel when
- You need long clear spans with the fewest possible posts.
- A commercial-scale shade or a wide opening where posts would ruin the layout.
- You're carrying a heavier roof assembly than aluminum will support.
- You're comfortable maintaining the coating, especially near pools and misters.
04
Choose timber when
- The architecture is desert-modern, hacienda, or ranch and a manufactured cover would look wrong.
- You want real detailing — corbels, rafter tails, stained ceilings, tongue-and-groove decking.
- You'll keep a 3–5 year restaining rhythm.
- The structure is worth permitting, engineering, and inspecting as a permanent build.
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What the frame does not decide
- Heat under the cover — that's the roof panel, ventilation, and fans.
- Rain protection — that's solid versus lattice versus louvered.
- Wind survival — that's engineering, footings, and anchoring.
- Permit path — that's your jurisdiction, size, attachment, and electrical.
06
Footings, attachment, and engineering
Attached versus freestanding changes the structural detail and the review path. Footings depend on soil, existing hardscape, and the engineered detail, and post-tension slabs require documented tendon locating before any drilling. Manufactured aluminum systems must be installed within their published span, load, and wind limits.
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How AE handles it
We size the structure to the approved engineering, match the material to your architecture and the upkeep you want, and document the frame, roof, finish, and warranty terms in writing before fabrication. AE workmanship warranty applies to the install; manufacturer coverage passes through on products and hardware.
FAQ
Common questions.
Metal is the lower-maintenance answer and wood is the better-looking one on most desert-modern, hacienda, and ranch homes. Aluminum doesn't rust and is factory-finished, so upkeep is mostly cleaning. Timber needs restaining every 3–5 years here to stay rich. Neither is wrong — pick based on the look you want and the upkeep you'll actually do.
An AE custom timber pergola in cedar, Douglas fir, or stained pine plans at $8,500 to $32,000 in the Phoenix metro. Fixed-roof aluminum plans at $5,500 to $18,000 for a comparable footprint, and motorized louvered aluminum runs $22,000 to $85,000-plus. Those are planning ranges; the signed scope controls the final number.
It holds up when it is finished and refinished. UV breaks down stains and clear coats faster here than in milder climates, so exposed wood needs a recoat rhythm set by the finish manufacturer — typically every 3–5 years on our timber structures. Neglected wood checks, greys, and eventually cracks.
The frame surface heats in direct sun like anything else, but comfort underneath is decided by the roof, not the frame metal. A thin non-insulated solid panel radiates heat downward; an insulated foam-core panel, ceiling fans, and open sides are what fix the 'shaded but still hot' complaint.
All three last decades when they're engineered, anchored, and maintained. Aluminum doesn't rust, steel lasts as long as its coating is maintained, and timber lasts as long as its finish schedule is kept. Failures we're called to fix are almost always anchoring, footing, or neglected finish — not the material giving out on its own.
We don't install them. Thin-wall steel or imported aluminum with stamped brackets, no engineering letter, and no real anchoring spec is what we see bow within one summer and fail in the first 60-plus mph monsoon. A structure that has to stand in Valley wind needs engineering behind it.
It depends on your jurisdiction, the structure's size, whether it's attached, its foundation, and any electrical. You are responsible for confirming requirements with the applicable municipality or authority having jurisdiction, and with your HOA and insurer where relevant. AE builds to the approved plans and the written scope.
Deciding between timber and aluminum?
Send photos of the house and the area you want covered, and we'll show you what each material looks like on your architecture — priced on the same plan.
Start My Project PlanYour home investment — protected
Why this is an investment, not a cost.
An AE backyard is engineered to add daily livability and long-term home value. We publish honest ranges and build to code with a licensed and bonded Arizona crew. AE provides project-specific workmanship and manufacturer-warranty information in the signed agreement. Website summaries are for planning only.
- Licensed, bonded & insured in Arizona. ROC 340966 (R-62) · ROC 341002 (R-3) · ROC 347738 (KA-5) · ROC 211530 (CR-21). Most Arizona contracting work valued at $1,000 or more — or requiring a permit — must be performed by a properly licensed contractor, subject to statutory exemptions. Verify the legal entity, license status, and classification with the Arizona Registrar of Contractors.
- Real ranges, itemized scope. You see materials, finishes, equipment models, and a line-item budget before you sign — not a one-line "pool — $90,000."
Next step
Plan your investment with a designer.
Five minutes, a real range, and no sales pressure. Or vet any Arizona contractor (us included) before you spend a dollar.
Homeowner FAQ
More structure questions?
Spans, permits, finishes, and maintenance are covered in the shade section of the Homeowner FAQ.