great info how about a thought on my carport it is 52 x 14 built with 2024 specs and engineered for hurricanes with the four wall system i am trying to fortify the structure by placing 2" beams across the legth of the 52 feet near the gutter but on the 3" compressed insulated panels so the wind will not blow the carport roof off Looking for some help on do you think this will work Thank you Rich Fredericks Northport Florida
Yes, all of our panels that have gone through uplift testing have been taken to failure. All the testing reports are on our profiles page with that information included: sheffieldmetals.com/products/panel-profiles/ The next video in this series is all about the different tests, including UL 1897 which takes panels to failure. -Thad
FEMA has said in their reports after Hurricanes that for metal roofs the worst performing are the snap lock panel style metal roofs, the changes in positive and negative pressures causes the snap locks to come undone and then the wind gets under the panels and can start lifting them like a sail or you get multiple panels that come unlocked and flap in the wind. FEMA comments on exposed fastener metal roofs is simply they are easy to check that there are enough fasteners installed to secure the panels. Mechanical standing seam when they come loose also act like a sale and you can lose an entire section of metal panels because they are mechanically crimped together. While almost everything you read about exposed fastener roofs is negative they seem to be at the top of the list when it comes to surviving a Hurricane. Add in that there are millions of people with exposed fastener roofs that do not have any issues with them it makes the majority of criticisms against them unfounded. Around me there are lots of exposed fastener metal roofs and they all survived Hurricane Ian in Cape Coral, Florida. No metal roof is immune from getting a water leak and none of them are 100% fool proof against a Hurricane, but exposed fastener metal roofs are not a bad choice. Todays fasteners use EPDM washers which can last for up to 30 years before the screws need to be replaced and they have shoulders on the quality fasteners that shield the EPDM gasket from the UV rays of the sun. With a snap lock metal panel or a mechanical seam metal roof you can loose roof panels, with an exposed fastener metal roof you pretty much have to loose the plywood for those to fail and if you are loosing the plywood it does not matter if it is exposed fastener, snap lock or mechanical seam. We have an exposed fastener metal roof installed by Stanley's Roofing and according the test data from Tri County Metals done through Creek Technical Services LLC our roof panels can withstand -116.25 PSF with the fasteners installed at 24 inches on center. Our home is in exposure B with a roof slop between 2:12 and 12:12 ours comes out at 27 degree slope, according to testing 30 degrees is considered optimum in Hurricane force winds and that is for wind driven rain. According to the chart our roof in zone 1 can withstand up to 200 MPH wind speed, zone 2 can withstand up to 200 MPH wind speed and zone 3 can withstand up to 190 MPH wind speed. I think we are as well protected as we can be with our roof. Also metal roofs are lighter than shingles and tile roofs so that reduces the load on the roof during a Hurricane as well.
@@mustangecoboosthpp3869 A little over a year ago I replaced my shingle roof with a metal roof. The company convinced me to go to the expose fasteners. I live in Florida and hurricanes come every few years. Their experience was standing seams came apart in storms more often than expose fasteners. The disadvantage is after 5 years they have to be inspected every year and sometimes need to be re-screwed. My home just went through Milton and thank the Lord I have no damage.
great info
how about a thought on my carport
it is 52 x 14 built with 2024 specs and engineered for hurricanes with the four wall system
i am trying to fortify the structure by placing 2" beams across the legth of the 52 feet near the gutter but on the 3" compressed insulated panels so the wind will not blow the carport roof off
Looking for some help on do you think this will work
Thank you
Rich Fredericks
Northport Florida
Have you pushed your panels to critical failure? At what point are the snap lock and mechanical seams completely failing and coming apart?
Yes, all of our panels that have gone through uplift testing have been taken to failure. All the testing reports are on our profiles page with that information included: sheffieldmetals.com/products/panel-profiles/ The next video in this series is all about the different tests, including UL 1897 which takes panels to failure. -Thad
FEMA has said in their reports after Hurricanes that for metal roofs the worst performing are the snap lock panel style metal roofs, the changes in positive and negative pressures causes the snap locks to come undone and then the wind gets under the panels and can start lifting them like a sail or you get multiple panels that come unlocked and flap in the wind. FEMA comments on exposed fastener metal roofs is simply they are easy to check that there are enough fasteners installed to secure the panels. Mechanical standing seam when they come loose also act like a sale and you can lose an entire section of metal panels because they are mechanically crimped together.
While almost everything you read about exposed fastener roofs is negative they seem to be at the top of the list when it comes to surviving a Hurricane. Add in that there are millions of people with exposed fastener roofs that do not have any issues with them it makes the majority of criticisms against them unfounded. Around me there are lots of exposed fastener metal roofs and they all survived Hurricane Ian in Cape Coral, Florida.
No metal roof is immune from getting a water leak and none of them are 100% fool proof against a Hurricane, but exposed fastener metal roofs are not a bad choice. Todays fasteners use EPDM washers which can last for up to 30 years before the screws need to be replaced and they have shoulders on the quality fasteners that shield the EPDM gasket from the UV rays of the sun.
With a snap lock metal panel or a mechanical seam metal roof you can loose roof panels, with an exposed fastener metal roof you pretty much have to loose the plywood for those to fail and if you are loosing the plywood it does not matter if it is exposed fastener, snap lock or mechanical seam.
We have an exposed fastener metal roof installed by Stanley's Roofing and according the test data from Tri County Metals done through Creek Technical Services LLC our roof panels can withstand -116.25 PSF with the fasteners installed at 24 inches on center. Our home is in exposure B with a roof slop between 2:12 and 12:12 ours comes out at 27 degree slope, according to testing 30 degrees is considered optimum in Hurricane force winds and that is for wind driven rain. According to the chart our roof in zone 1 can withstand up to 200 MPH wind speed, zone 2 can withstand up to 200 MPH wind speed and zone 3 can withstand up to 190 MPH wind speed.
I think we are as well protected as we can be with our roof. Also metal roofs are lighter than shingles and tile roofs so that reduces the load on the roof during a Hurricane as well.
@@mustangecoboosthpp3869 A little over a year ago I replaced my shingle roof with a metal roof. The company convinced me to go to the expose fasteners. I live in Florida and hurricanes come every few years. Their experience was standing seams came apart in storms more often than expose fasteners. The disadvantage is after 5 years they have to be inspected every year and sometimes need to be re-screwed. My home just went through Milton and thank the Lord I have no damage.