Which metal roof type can withstand higher winds?

[RNCTX]

Standing seam is certainly superior but will cost. You can trade the upfront cost for maintenance on fastened metal. I've extended an old metal roof on a house from the early 1900s indefinitely by painting it with xylene paint every few (7ish) years and replacing loose nails with those rubber gasket'ed screws.

Look at your prevailing winds (airport data) and see which way your house faces relative to them.

The catch with a metal roof is that large smooth surface can create lift (like an airplane wing) and with enough lift, the metal will rip loose, fasteners and all, because the lumber it's fastened to has split.

You cannot cost effectively build something that will survive a category 4-5 hurricane, mind you. As they say in Shakespeare, when that happens, "...we are in god's hand, brother, not in theirs." Planning your roof for where the winds from your every-day thunderstorms come from is more feasible. Defeating lift on a metal roof can be as simple as designing a trim / soffit / gutter system around the side that the prevailing winds come from to disrupt the lift.

[buenos]

Which one can take stronger winds, and by how much difference:
- standing seam metal
- metal tiles: flat
- metal tiles: clay-tile-looking
- metal tiles: stone coated
- metal tiles: interlocking
- any other types exist?

[Z4X8]

Perhaps shipping container home roof can withstand any winds. Including category 5 hurricane.

[L00k4ward]

Originally Posted by buenos

Which metal roof type can withstand higher winds?
The data on wind resistance on various websites in terms of wind speed mph, seems to be intentionally fuzzy. There are different types of metal roofs, (metal shingles, stone coated metal shingles, tile-looking weavy shingles, more flat shingles, standing seam, and standing seam with edge wrap around). I could not find any reliable comparison table for max wind speed resistance. Can we compare them as numbers? It should not be so subjective.

Some websites even claim that architectural asphalt shingles can do 110mph while their great metal product goes as high as 120mph, which is ridiculous advertisement if they only offer 8% more wind resistance for 2x the price.
Which one can do 160mph?

I'm 7 miles inland from the beach in Florida.

Your best bet is to find a roof which satisfies Miami-Dade code - I believe it is the most stringent residential code regarding being better withstand high winds and hurricanes. IIRC it requires roofing wind load rated for 185-195 miles an hour wind

Have a good insurance too.

7 miles in-land in Florida doesn’t say much.
Is it Miami? Or Jax? Huge difference. If it is Jax - you could be overreacting…are you in high velocity zone?

Edit: check page 21 -60 of the link below: it is for roofing e-permit. You may glean some information - if you have a similar roof type. Pay attention to underlayment and nails types

https://www.miamidade.gov/permits/li...ing-system.pdf

There are some manufacturers mentioned.
I think the code was just updated last year - the e-permit - is from 2018?

Metal roofing permits
https://www.miamidade.gov/permits/li...etal-roofs.pdf
https://www.miamidade.gov/permits/hu...mitigation.asp

One of the manufacturers compliant
https://www.englertinc.com/metal-roo...el-c1300-c1301

Proper installation and inspection is the key.

[K'ledgeBldr]

There’s a reason why concrete homes in the Caribbean have almost flat concrete roofs.

I think the reason why you’re finding the material somewhat convoluted is because there’s a different between “material” and “roof design”. Just because a roof is “metal” doesn’t mean it’s going to stay in-place any better than any other roofing material.

The design of the roof (shape, size, hgt, etc) play one part. It’s structural integrity (bracing, mechanical connectors/anchors) play another part. Metal per say, is just the waterproof, esthetic part; how it stays in place is purely a matter of connectors to the structural elements.