For most commercial and multi-residential sites in Canada, powder-coated aluminum is the fence material that costs the least to own over 20 years, because it does not rust. Steel is stronger and cheaper to buy, and remains the right choice where a heavy anti-climb security fence is specified. Wrought iron gives a look nothing else quite matches, at a price and a maintenance schedule that few projects accept today. The honest answer is that the material follows the requirement: what the fence has to resist, how long it has to look new, and what the site can spend on upkeep. ArcView fabricates aluminum only, so the steel and iron cases below are stated as fairly as we can.
Quick verdict
- Choose aluminum for perimeter fencing, amenity and pool enclosures, privacy screens and gates where the finish has to survive freeze-thaw, road salt and coastal air without repainting. See ArcView's commercial fencing and gates.
- Choose steel for high-security perimeters (utilities, data centres, correctional and some school sites) where anti-climb geometry, cut resistance and impact strength are in the specification. Expect to budget for coating maintenance.
- Choose wrought iron only where a heritage authority or a design brief demands genuine forged work. Modern "wrought iron" fences are usually welded steel with cast ornaments, and behave like steel.
How they compare
| Factor | Aluminum | Steel (galvanized + powder coat) | Wrought iron |
|---|---|---|---|
| Corrosion | Does not rust; oxide layer is self-protecting | Rusts where the coating is breached; galvanizing slows it | Rusts; needs regular repainting |
| Weight | Light; smaller posts and footings | Heavy; larger footings, more labour to set | Heaviest |
| Strength and impact | Adequate for perimeter, enclosure and privacy work | Highest; the choice for anti-climb security | High, but brittle at welds and joints |
| Finish life | Powder coat holds colour 10 to 20 years without repainting | Powder coat over galvanizing, 5 to 15 years depending on exposure | Paint, typically recoated every few years |
| Up-front cost | Higher than steel per panel | Lowest per panel | Highest by a wide margin |
| Maintenance | Wash down | Touch up chips promptly; recoat when the finish fails | Sand, prime and repaint on a schedule |
| Design freedom | Extruded profiles: blades, louvres, slats, spears, insert panels | Tube and picket profiles | Forged scrolls and ornament |
| Best for | Multi-residential, institutional and commercial perimeters, screens, gates | Security and industrial sites | Heritage and restoration |
Finish-life ranges are typical for Canadian exposure and depend on coating grade, colour and site. Compare the actual warranty offered on the quoted fence.
Corrosion is the Canadian question
Every fence in Canada spends part of the year wet, frozen, or coated in de-icing salt. Aluminum forms a thin oxide skin that protects the metal underneath; scratch it and the skin reforms. A powder coat on aluminum is there for colour and gloss, not to keep the metal alive. Steel is the opposite: the coating is the only thing between the metal and rust, and a chip at a weld or a fastener becomes a rust streak within a season. Galvanizing under the powder coat slows this considerably and is the right specification for any steel fence in Canada, but it does not remove the maintenance obligation.
On coastal sites in British Columbia and anywhere near a salted road, this difference is the whole argument. ArcView specifies AAMA 2605 super-durable powder coat for coastal aluminum work and AAMA 2604 elsewhere; see the finish options on the fencing page.
Strength: steel wins, and it matters less than people think
Steel is roughly three times stiffer than aluminum for the same section, and a steel picket is harder to cut or bend. For a security fence that must resist a deliberate attack, that is decisive and steel is the correct material. For a perimeter fence on a condominium, a school, a clinic or a commercial plaza, the design loads are wind and the occasional impact, and an aluminum fence with properly sized posts and footings carries them without difficulty. Aluminum's lighter weight also means smaller footings and faster installation on podium slabs, where every anchor into the structure is coordinated with the engineer.
Cost over the life of the fence
Steel is cheaper to buy. Aluminum is cheaper to own. On a 20-year view, a steel fence that needs one full recoat (scaffold, surface preparation, paint, downtime) has usually cost more than the aluminum fence that needed a wash. Wrought iron is expensive at both ends. For a property manager, the question to ask on any fence quote is what the coating warranty says and who pays for the first recoat.
Design and fabrication
Aluminum is extruded, so the profile can be anything the die makes: blades with a precise gap, louvres that block sightlines, slats with a wood-grain finish, spears with cast tops. That is why contemporary commercial fencing is almost always aluminum. Steel is worked from tube and bar, which suits picket and welded-mesh security fences. Wrought iron is forged by hand, which is its appeal and its cost.
ArcView fabricates aluminum fencing, privacy screens and gates to the site plan for commercial, multi-residential and institutional projects, with in-ground, flanged or face-fixed posts detailed to the substrate. We do not sell standard panels and we do not fabricate steel; where a project needs a steel security fence, we say so.
Bottom line
Specify aluminum for perimeter, enclosure, privacy and gate work on commercial and multi-residential sites in Canada. Specify galvanized, powder-coated steel where the requirement is security and the site will maintain the coating. Reserve wrought iron for heritage work with a restoration budget.
Frequently asked questions
Is aluminum fencing strong enough for a commercial site? Yes for perimeter, enclosure, privacy and gate applications, where the loads are wind and incidental impact and the posts and footings are engineered for the site. Where anti-climb, cut-resistant security fencing is specified, steel is the correct material.
Does aluminum fencing rust? No. Aluminum forms a self-protecting oxide layer, so a chip in the powder coat exposes bare metal that does not rust. Steel rusts wherever its coating is breached, which is why galvanizing under the powder coat is essential on steel fences in Canada.
Is steel fencing cheaper than aluminum? Per panel, yes. Over the life of the fence, usually not, because steel needs its coating maintained and eventually recoated. Compare the coating warranty and who pays for the first recoat.
What is modern wrought iron fencing actually made of? Most fences sold as wrought iron today are welded steel with cast ornaments. Genuine forged wrought iron is a heritage product. Either way, treat it as steel for corrosion and maintenance purposes.
Which powder coat should a Canadian fence have? AAMA 2604 architectural powder coat is the standard for exterior aluminum. AAMA 2605 super-durable coating is specified for coastal sites and other high-exposure locations. ArcView uses 2604 as standard and 2605 where the site calls for it.
Does ArcView fabricate steel or wrought iron fencing? No. ArcView's fencing line is aluminum only, fabricated to drawing for commercial, multi-residential and institutional projects. Where a project needs a steel security fence, we say so rather than substitute.