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The best 10x12 hardtop gazebos

10 x 12 is the footprint that covers a six-seat table without dominating an average yard — and it is a smaller usable area than the catalog number suggests.

By Ryder M. · Published · Last updated

We compare published manufacturer specifications, warranty terms and owner-reported failure modes. We have not physically tested these structures. How we judge shade structures

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Part of Hardtop Gazebos

Gray powder-coated hardtop gazebo with a double galvanized steel roof beside a house

The short answer

The Sojag Messina is the pick at this size, on the strongest warranty structure in the category — limited lifetime on the frame, fifteen years on the finish. PURPLE LEAF offers the widest choice of configurations around this footprint. Note that the roof dimension is not the usable dimension: the base is typically more than a foot smaller each way.

Our picks at a glance

The best 10x12 hardtop gazebos: our ranked picks.
#StructureBest forWind ratingPrice
01
Hardtop gazebo with a galvanized steel roof and aluminum frame on a backyard patio
Sojag Messina Hardtop GazeboThe strongest warranty structure in the category — limited lifetime on the frame and 15 years on the finish — paired with wind and snow ratings the manufacturer describes but does not print.
Top pick at this sizeNot published by manufacturerCheck price on Amazon
02
Cedar-framed gazebo with heavy posts and a brown galvanized steel peak roof on a patio
Backyard Discovery Norwood Cedar GazeboThe only gazebo we can find that publishes a 100 mph wind rating and a convertible snow figure — and it converts to roughly 56 lb/ft², several times any other hardtop here.
Best documented at this footprint100 (Pro-Tect tested; product must be anchored per the manual)Check price on Amazon
03
Gray powder-coated hardtop gazebo with a double galvanized steel roof beside a house
PURPLE LEAF Hardtop GazeboThe widest size range in the category and the lowest published wind rating on this site — 40 mph, from the same brand that rates its pergolas at 70.
Most configurations at this footprint40Check price on Amazon
04
Hardtop gazebo with tinted polycarbonate roof panels and mosquito netting tracks
Sojag Verona Hardtop GazeboA polycarbonate-roofed alternative to the Messina that trades snow-shedding confidence for daylight underneath.
Best for a bright small spaceNot published by manufacturerCheck price on Amazon
05
Aluminum-framed gazebo with a two-tier galvanized steel roof over outdoor furniture
Sunjoy Kingston 12 x 14 Aluminum Gazebo with Steel RoofPublishes both a wind rating and a snow figure — but the snow figure is a whole-roof total, not a per-square-foot load, so it is not directly comparable to anyone else's.
The step up, if you can fit it50Check price on Amazon
06
Cedar gazebo with heavy square posts and a brown aluminum roof on a backyard patio
Yardistry Meridian 12 x 14 Cedar GazeboThe only structure here with 6x6 cedar posts and a five-year rot warranty — and it publishes no wind or snow figure at all.
Best if you want wood at this scaleNot published by manufacturerCheck price on Amazon
The best 10x12 hardtop gazebos: our ranked picks. Tap any row for the full write-up. Specifications are the manufacturer’s own published figures — see the Durability Table below for the source behind every number.

The durability table

Every published figure we could source for these structures, in one place, with the manufacturer page each number came from. Where a cell reads "Not published by manufacturer", that figure does not exist in the manufacturer's own material — we do not estimate it and we do not copy one from another site.

Published durability specifications: the best 10x12 hardtop gazebos.
ModelWind rating (mph)Snow loadFrameRoofAnchoring requiredWarrantySpec source
Sojag Messina Hardtop GazeboTop pickNot published by manufacturerNot published by manufacturerPowder-coated aluminumGalvanized steel panelsNot published by manufacturer1 year limited on the gazebo; limited lifetime on the aluminum/steel frame; 15 years on the powder-coated finishSojag hardtop gazebo collectionChecked 2026-09-26
Backyard Discovery Norwood Cedar Gazebo100 (Pro-Tect tested; product must be anchored per the manual)6,700 lb across the roof, or up to 30 in. of snow (12 x 10 ft model — roughly 56 lb/ft²)100% cedar, 6 in. x 6 in. posts, galvanized steel hardware29-gauge galvanized steel peak roof, thermal insulatedMandatory. Product must be anchored as specified in the instruction manual5 yearsBackyard Discovery Norwood 12x10 product pageChecked 2026-09-26
PURPLE LEAF Hardtop Gazebo402,500 lb (published as a total, without a stated roof area)Powder-coated aluminum alloyGalvanized steel, single or double roofNot published by manufacturerNot published by manufacturerPURPLE LEAF hardtop gazebo collectionChecked 2026-09-26
Sojag Verona Hardtop GazeboNot published by manufacturerNot published by manufacturerPowder-coated aluminumUV-protected tinted polycarbonate panelsNot published by manufacturer1 year limited on the gazebo; limited lifetime on the frame; 15 years on the powder-coated finishSojag hardtop gazebo collectionChecked 2026-09-26
Sunjoy Kingston 12 x 14 Aluminum Gazebo with Steel Roof503,000 lb across the entire roof (not a per-square-foot rating)Aluminum and steelGalvanized steel, two-tier ventedPre-drilled ground plates: included stakes for soft ground, expansion bolts for hard surfaces (bolts not included)Not published by manufacturerSunjoy Kingston product pageChecked 2026-09-26
Yardistry Meridian 12 x 14 Cedar GazeboNot published by manufacturerNot published by manufacturer100% premium cedar, 6 in. x 6 in. posts with heavy corner gussetsRust-proof coffee-brown aluminumPost mounting brackets supplied; anchoring hardware is not, because mounting surfaces vary1 year on materials and workmanship; 5 years on lumber against rot and decayYardistry Meridian 12x14 product pageChecked 2026-09-26
Published durability specifications: the best 10x12 hardtop gazebos. Every figure above is the manufacturer’s own published specification, checked on the date shown in the source column. Where a cell reads “Not published by manufacturer”, no figure exists in the manufacturer’s material — we do not estimate one, and we do not carry one over from another site.

Every pick in full

Hardtop gazebo with a galvanized steel roof and aluminum frame on a backyard patio

Top pick at this size

Sojag Messina Hardtop Gazebo

The strongest warranty structure in the category — limited lifetime on the frame and 15 years on the finish — paired with wind and snow ratings the manufacturer describes but does not print.

Wind rating
Not published by manufacturer
Snow load
Not published by manufacturer
Frame
Powder-coated aluminum
Roof
Galvanized steel panels
Anchoring
Not published by manufacturer
Warranty
1 year limited on the gazebo; limited lifetime on the aluminum/steel frame; 15 years on the powder-coated finish
Sizes
10 x 10 ft through 12 x 20 ft

The Messina range starts at 10 x 10 and runs to 12 x 20, so 10 x 12 sits at the practical end of it — and the reason to buy at this size is the same as at any other: the warranty is the strongest in the category. One year limited on the gazebo, a limited lifetime warranty on the aluminum and steel frame, and fifteen years on the powder-coated finish.

At a smaller footprint that warranty structure arguably matters more rather than less. A 10 x 12 is often bought as a permanent fixture over a specific seating area — not as a statement structure — which means it stays in place for years and the question that matters is whether the frame and finish will still be sound. Sojag's three terms are a direct answer to that.

Build is a galvanized steel panel roof on a powder-coated aluminum frame. Steel is the right panel in snow country because it sheds and does not creep, and at a smaller roof area the total load is lower anyway — a 10 x 12 collects roughly half the snow and wind load of a 12 x 20 on a similar frame, which is a real durability advantage that no specification sheet mentions.

As elsewhere: Sojag publishes no wind rating and no snow figure. It describes the roof as carrying an engineered snow load and the structure as wind resistant, and prints neither. If you need a number, buy the Sunjoy instead.

Skip it if: You need published wind or snow figures to check against a local requirement — there are none for this model.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from Sojag hardtop gazebo collection, checked 2026-09-26.

Cedar-framed gazebo with heavy posts and a brown galvanized steel peak roof on a patio

Best documented at this footprint

Backyard Discovery Norwood Cedar Gazebo

The only gazebo we can find that publishes a 100 mph wind rating and a convertible snow figure — and it converts to roughly 56 lb/ft², several times any other hardtop here.

Wind rating
100 (Pro-Tect tested; product must be anchored per the manual)
Snow load
6,700 lb across the roof, or up to 30 in. of snow (12 x 10 ft model — roughly 56 lb/ft²)
Frame
100% cedar, 6 in. x 6 in. posts, galvanized steel hardware
Roof
29-gauge galvanized steel peak roof, thermal insulated
Anchoring
Mandatory. Product must be anchored as specified in the instruction manual
Warranty
5 years
Sizes
10 x 10, 12 x 10, 14 x 10, 14 x 12, 16 x 12, 20 x 12 and 24 x 12 ft

The Norwood comes in 12 x 10 — this exact footprint — and it is the size for which Backyard Discovery publishes its figures, which makes it the best-documented gazebo available at 10 x 12-ish dimensions by a clear margin.

The figures for that specific model: 100 mph Pro-Tect tested wind rating, 6,700 lb of snow capacity across the roof, or up to 30 inches of snow — which over 120 ft² converts to roughly 56 lb/ft². Both are several times the aluminum-framed alternatives at this size, and both come with the manufacturer stating that the product must be anchored as specified in the manual.

100% cedar with 6 in. x 6 in. posts under a 29-gauge galvanized steel peak roof. At this footprint that post section reads as genuinely substantial relative to the structure, which is part of the appeal — a cedar 12 x 10 looks like architecture where an aluminum one looks like product. Five-year warranty; the range runs 10 x 10 to 24 x 12 ft.

Worth checking before you commit: Backyard Discovery publishes the roof dimension. Confirm the post-to-post base dimension for the model you are buying before laying out your patio, because as everywhere in this category it will be smaller than the number on the box.

Skip it if: You will not re-seal cedar every two to three years, or you want the longest warranty — the Messina covers its frame for a limited lifetime.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from Backyard Discovery Norwood 12x10 product page, checked 2026-09-26.

Gray powder-coated hardtop gazebo with a double galvanized steel roof beside a house

Most configurations at this footprint

PURPLE LEAF Hardtop Gazebo

The widest size range in the category and the lowest published wind rating on this site — 40 mph, from the same brand that rates its pergolas at 70.

Wind rating
40
Snow load
2,500 lb (published as a total, without a stated roof area)
Frame
Powder-coated aluminum alloy
Roof
Galvanized steel, single or double roof
Anchoring
Not published by manufacturer
Warranty
Not published by manufacturer
Sizes
6 x 8 ft through 14 x 28 ft

PURPLE LEAF's range spans 6 x 8 ft through 14 x 28 ft in more configurations than anyone else here — patio, bronze, solarium, grill gazebo and wall-mounted lean-to — which makes it the brand most likely to have something that fits an awkward 10 x 12-ish space or an odd corner.

The wall-mounted lean-to variant deserves specific mention at this size. If your 10 x 12 is going against the house, a lean-to uses the wall as one side and gives you more covered area per square foot of footprint than a freestanding structure — plus a rain junction that actually works. It also usually means fixing into the building, which is what triggers permit requirements in many jurisdictions; pergola permits and HOA covers the general principle.

Frame and roof are a powder-coated aluminum alloy with galvanized steel panels, single or double roof — materially the same combination as the Messina.

The published figures are the weak point. 40 mph wind rating, the lowest we can source in this category. Snow published as 2,500 lb with no roof area stated, which across a range from 6 x 8 to 14 x 28 makes it impossible to convert. No warranty term published.

Skip it if: You are in an exposed spot. 40 mph is the lowest published rating here and there is no warranty term to fall back on.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from PURPLE LEAF hardtop gazebo collection, checked 2026-09-26.

Hardtop gazebo with tinted polycarbonate roof panels and mosquito netting tracks

Best for a bright small space

Sojag Verona Hardtop Gazebo

A polycarbonate-roofed alternative to the Messina that trades snow-shedding confidence for daylight underneath.

Wind rating
Not published by manufacturer
Snow load
Not published by manufacturer
Frame
Powder-coated aluminum
Roof
UV-protected tinted polycarbonate panels
Anchoring
Not published by manufacturer
Warranty
1 year limited on the gazebo; limited lifetime on the frame; 15 years on the powder-coated finish
Sizes
Not published by manufacturer

At a smaller footprint the roof material changes how the space feels more than it does at a larger one, and that is the whole argument for the Verona here. UV-protected tinted polycarbonate panels pass daylight; a galvanized steel roof blocks it entirely.

In a 10 x 12 under a steel roof, with the house on one side, the space can read as genuinely dim — a shaded box rather than a shaded patio. Polycarbonate keeps it feeling outdoors, and it is the difference between a structure people sit in and one they walk past. It also means plants underneath have a chance.

Same frame and same warranty as the Messina: one year limited on the gazebo, limited lifetime on the frame, fifteen years on the powder-coated finish. Plus the double-track system for adding mosquito netting and curtains, which at this size is a more realistic proposition than on a large structure — less netting to manage, and a smaller sail to remember to take down before weather.

The snow caveat stands. Polycarbonate creeps under repeated loading and eventually yellows as its UV layer degrades. In snow country, choose the Messina's steel roof in the same frame.

Skip it if: You get meaningful snow — the steel-roofed Messina is the same structure with the panel that handles it.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from Sojag hardtop gazebo collection, checked 2026-09-26.

Aluminum-framed gazebo with a two-tier galvanized steel roof over outdoor furniture

The step up, if you can fit it

Sunjoy Kingston 12 x 14 Aluminum Gazebo with Steel Roof

Publishes both a wind rating and a snow figure — but the snow figure is a whole-roof total, not a per-square-foot load, so it is not directly comparable to anyone else's.

Wind rating
50
Snow load
3,000 lb across the entire roof (not a per-square-foot rating)
Frame
Aluminum and steel
Roof
Galvanized steel, two-tier vented
Anchoring
Pre-drilled ground plates: included stakes for soft ground, expansion bolts for hard surfaces (bolts not included)
Warranty
Not published by manufacturer
Sizes
Roof 12 x 14 ft; base 11 x 13 ft; height 11.02 ft

Not a 10 x 12 — it is 12 x 14 ft at the roof, over an 11 x 13 ft base — and it is here because it is the closest well-documented alternative and because the step up is often the right call.

The case for it is documentation. It is the only gazebo we track that publishes both a 50 mph wind rating and a snow figure (3,000 lb across the roof, roughly 17.9 lb/ft²), and the only one that publishes how it expects to be anchored: ground plates with three holes, stakes for soft ground, expansion bolts for hard surfaces not included. If you have a local requirement to check against, nothing at 10 x 12 lets you do that.

The case against is footprint, and it is real: at 12 x 14 the roof needs two more feet each way than a 10 x 12, plus clearance to work around it. On a small patio that is the difference between fitting and not.

Worth knowing before you decide: the usable area difference is smaller than the catalog numbers suggest, because base dimensions are always smaller than roof dimensions. The Kingston's 12 x 14 roof sits over an 11 x 13 base. Measure what you have, then compare base to base rather than roof to roof.

Skip it if: Your space is genuinely 10 x 12 — this needs meaningfully more room, and forcing it means no clearance to move around it.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from Sunjoy Kingston product page, checked 2026-09-26.

Cedar gazebo with heavy square posts and a brown aluminum roof on a backyard patio

Best if you want wood at this scale

Yardistry Meridian 12 x 14 Cedar Gazebo

The only structure here with 6x6 cedar posts and a five-year rot warranty — and it publishes no wind or snow figure at all.

Wind rating
Not published by manufacturer
Snow load
Not published by manufacturer
Frame
100% premium cedar, 6 in. x 6 in. posts with heavy corner gussets
Roof
Rust-proof coffee-brown aluminum
Anchoring
Post mounting brackets supplied; anchoring hardware is not, because mounting surfaces vary
Warranty
1 year on materials and workmanship; 5 years on lumber against rot and decay
Sizes
Roof 12 x 14 ft; base 10 ft 10⅜ in. x 12 ft 10⅜ in.

The Meridian we have full specifications for is a 12 x 14, so like the Kingston it is a step up rather than a 10 x 12 — but Yardistry's range covers smaller footprints and the reason to consider the brand applies at any size.

100% premium cedar with 6 in. x 6 in. posts and heavy corner gussets, under a rust-proof aluminum roof. Nothing else in this comparison has posts that size, and at a smaller footprint that section looks even more substantial relative to the structure — which is part of the appeal. A cedar 10 x 12-ish gazebo reads as architecture in a way an aluminum one does not.

The published dimensions on the 12 x 14 are the clearest illustration of the roof-versus-base point on this whole page: a 12 x 14 ft roof over a 10 ft 10⅜ in. x 12 ft 10⅜ in. base. The usable footprint is more than a foot smaller each way than the number on the box. Every gazebo in this category works that way and most people measure the wrong one.

Warranty is one year on materials and workmanship with five years on the lumber against rot and decay. Neither a wind rating nor a snow figure is published. Post mounting brackets are supplied and anchoring hardware is not.

Skip it if: You will not re-seal cedar every two to three years, or you need a published durability figure — this publishes neither wind nor snow.

Check price on Amazon

#ad Price shown as of September 26, 2026. How this site is funded

Specifications from Yardistry Meridian 12x14 product page, checked 2026-09-26.

Why 10x12 is the size most yards actually want

There is a reason this footprint dominates the category. It is the smallest size that covers a six-seat table with chairs pushed back, and the largest that does not dominate an average suburban yard.

Work it from the furniture rather than the catalog. A six-seat rectangular table is roughly 6 ft by 3 ft. Add the chairs, and add the space a person needs to push back and stand up — call it 3 ft on every side — and you need something like 12 ft by 9 ft of genuinely clear area. A 10 x 12 gazebo gets you close to that. A 10 x 10 does not, once you account for the base being smaller than the roof.

And it is the size where a hardtop makes most sense. Small enough that the roof area, and therefore the wind and snow load, stays modest. Large enough to be worth anchoring properly and leaving up year-round. What size gazebo do I need works through the seating arithmetic properly.

Roof size is not usable size — check this before you buy

This is the single most common measuring mistake in the category and it is worth its own section, because at 10 x 12 the difference decides whether the structure works.

Every gazebo here is sold by its roof dimension, and the base is always smaller. Yardistry publishes both for the Meridian: a 12 x 14 ft roof over a 10 ft 10⅜ in. x 12 ft 10⅜ in. base. That is more than a foot lost in each direction. Sunjoy publishes a 12 x 14 ft roof over an 11 x 13 ft base — a foot each way.

So a gazebo advertised as 10 x 12 has a usable footprint closer to 9 x 11, and the legs are at the corners of the smaller rectangle. That matters twice: once for whether your table and chairs fit between the posts, and once for whether you can position the posts where they need to be on your patio.

  1. 01Measure your actual clear area, allowing for where you can get an anchor in — an anchor set too close to a slab edge will crack it out rather than hold.
  2. 02Find the base dimensions, not the roof dimensions. If a listing publishes only the roof size, ask or look elsewhere. This is the number that has to fit.
  3. 03Lay it out with string or tape at the base dimensions before ordering, and put the actual furniture inside it. Then push a chair back.
  4. 04Check the height too. Most of these run 8-11 ft at the peak; the Sunjoy Kingston is 11.02 ft. Overhanging branches, eaves and first-floor windows all become relevant at that height.
  5. 05Leave working clearance on at least two sides — you have to assemble it, and you will need to get to the roof with a rake in winter.

What the published specs say at this size

Briefly, because the pattern is the same as everywhere else in this category and it is worth seeing it in one place.

  • Sojag — no wind rating, no snow figure, the best warranty in backyard shade (limited lifetime frame, 15 years finish). Sizes from 10 x 10 to 12 x 20.
  • PURPLE LEAF — 40 mph wind rating, a 2,500 lb snow figure that cannot be converted, no warranty term, and the widest size and configuration range at 6 x 8 to 14 x 28.
  • Sunjoy — 50 mph wind, roughly 17.9 lb/ft² snow once converted, a documented anchoring provision, and no warranty term. 12 x 14 only, so a step up from 10 x 12.
  • Yardistry — no wind or snow figures, 6x6 cedar posts, 1 year materials and 5 years on lumber against rot, and published base dimensions.

Three of the four publish no wind rating and three publish no usable snow figure. That is the category, not a gap in our research — and it is why warranty structure and published dimensions end up carrying so much weight in a comparison at this size.

The smaller footprint is a durability advantage

Something nobody puts on a product page: at 10 x 12 you are buying a structurally easier problem than the same manufacturer's 12 x 20.

Roof area is the load. Wind load and snow load both scale with the area of the roof plane, and the number of legs carrying it does not. A 10 x 12 roof is 120 ft²; a 12 x 20 is 240. Same frame design, same anchors, twice the collected load.

That is why choosing a smaller gazebo is a genuine option on an exposed or snowy site, and often a better one than agonizing over a 10 mph difference in published wind ratings between brands. It reduces the load rather than resisting it, and it is the lever nobody mentions because it means selling a cheaper product.

The trade is obvious and worth stating: less covered space. If a 10 x 12 genuinely does not fit your table, buying one because it handles weather better is solving the wrong problem — you will end up with a structure you do not use. Best gazebos for high winds and best gazebos for snow load are the right pages if weather is the binding constraint.

What we cut, and why

Every model below was a genuine candidate and did not make the list. The reason is stated in each case, because a shortlist with no visible rejections is not evidence of a selection process.

Soft-top 10x12 gazebos
This size is where soft-tops are most heavily sold, and a fabric canopy is a consumable that needs replacing every few seasons. Legitimate if you plan to take the structure down each winter — see [hardtop vs soft top](/gazebos/hardtop-vs-soft-top-gazebos) — and not a hardtop comparison.
10x10 grill and bar gazebos
A different product for a different job: a shelter over a cooking station rather than a seating area, usually with a bar counter and no floor space to speak of. PURPLE LEAF's 6 x 8 grill gazebo is the version of that we would look at, and it does not belong in a comparison of dining-sized structures.
Models listed at 10x12 whose base dimensions we could not find
At this size the roof-to-base difference decides whether the structure fits, and several listings publish a roof dimension only. We left those off rather than present a footprint we could not verify — which is the same rule we apply to any unpublished specification.
Warehouse-club exclusives at this size
10 x 12 is a common club-store size and those models change year to year without manufacturer specifications being published anywhere citable. Availability also has to be national for a pick to be useful.

Questions people ask

What is the best 10x12 hardtop gazebo?
The Sojag Messina, whose range covers this footprint and which carries the strongest warranty in the category: one year limited on the gazebo, a limited lifetime warranty on the frame and fifteen years on the powder-coated finish. PURPLE LEAF has the widest choice of configurations around this size.
Is a 10x12 gazebo big enough for a six-seat table?
Just about, and only if you measure the base rather than the roof. A six-seat table plus room to push chairs back needs roughly 12 x 9 ft of clear area, and a gazebo sold as 10 x 12 typically has a base closer to 9 x 11. Lay it out with tape before ordering.
Why is the base smaller than the roof on these gazebos?
Because the roof overhangs the frame, which is what keeps rain off the posts. Yardistry publishes a 12 x 14 ft roof over a 10 ft 10⅜ in. x 12 ft 10⅜ in. base — over a foot lost each way. Always buy on the base dimension; it is the one that has to fit.
Does a 10x12 gazebo need a permit?
Often it is below the threshold where a freestanding structure needs one, and attaching it to the house frequently changes that answer. Thresholds vary by jurisdiction — check with your local building department before ordering, not after.
Is a smaller gazebo better in wind and snow?
Yes, meaningfully. Roof area is the load, and it scales with area while the number of legs does not. A 10 x 12 roof collects half the load of a 12 x 20 on a comparable frame, which is a bigger real-world difference than the 10 mph spread between the published wind ratings in this category.
What size gazebo requires a permit?
It depends entirely on your jurisdiction, and on whether the structure is freestanding or attached. Many places set a footprint threshold for freestanding accessory structures and treat anything bolted to the house differently because it becomes a structural alteration. Ask your building department — it is the only reliable answer.
Can I fit a 10x12 gazebo on a deck?
Yes, if the deck framing can take it and you can anchor into joists or added blocking rather than the deck boards. Weight plus wind uplift is more than a deck built for foot traffic was designed for, so on a raised or older deck it is worth having someone assess the framing. See how to anchor a gazebo.
Steel or polycarbonate roof at this size?
At a small footprint the roof material changes how the space feels more than it does on a large one — a steel roof over a 10 x 12 against a house can read as genuinely dim. Polycarbonate keeps it bright, and creeps under repeated snow load. Steel if you get snow, polycarbonate if you do not.