4yr old galvalume

Just got this one today. 4yr old galvalume in exuma. I'm ripping what's left of it off and putting on clay tile.

Wow, this is a difficult tear off! Its screwed down and the heads of the screws are all rusty so I gotta tear em out. I've already busted two tear off tools and I'm only a third of the way done. Btw tear off tools here are shovels with teeth and they're almost 150 a piece! I'm taking pix as I go since this is my first tear off. Does anyone want to see anything specific? I keep finding these stickers under the metal which say " metal sales manufacturing corporation, miami dade approved. I'm gonna contact them but I don't expect anything like responsibility coming from them. Gotta go, got some fresh snapper on da grill.

I aint rippin off that lil one I meant the green one above. The little one is still a great place to have a beer!

I'm about to begin ripping this thing off in the morning. I'm so excited to tear off a metal roof! Here's another great example of how awesome they are. Stay warm guys, ill be in touch.

Let me rephrase that just a tad: To those in the know, I&W is a tool and so is anyone who uses it all the time. When Jack got a leg up in this world, the first thing he did was include a space for that stuff in his war-wagon right next to the cans of half-dried mastic and the pile of broken wood shingles he spreads it with. It's a wonder.

Twill lol I love it! You and I would get along great I know OS would agree for sure. And you're right, the bottoms are hemmed. I'm tearing this roof off in two weeks ill investigate and take more pics. Couldn't agree with you more about your problems. I was looking into opening a pizza shop before I left the country instead. Let em have it!

The plastic film is for shipping. They usually ship the panels in crates. The plastic film is to keep the panels from scratching each other and to prevent scratches from unavoidable rooftop traffic during the install. You're supposed to peel the plastic off immediately AFTER the panels have been installed. The corrosion started with the cut edges and was accelerated by the exposure to a salt rich ocean environment in a humid area. The type of paint on the panels could also be a factor. These panels were probably painted with an SMP, not Kynar. Also, there shouldn't be cut edges at the eave anyway. Proper install would have the panels hemmed & hooked to a starter cleat along the eave

I was just in the Bahamas on Thursday. On the pier there were roofs just like that one. My first thought was Way to close to the ocean for painted steel. Salt air will permeate everything. From the looks of the pics. that house in right on the coast and storms will bring salt water in direct contact with the roof.

We have tons of galvalume roofs down been installing them for over 20 years in coastal Louisiana and have never seen corrosion like that on on roofs.I would say that is the exception, not the rule!Average life expectancy of r panel on a metal building here is about 30 to 40 years if installed correctly,usually fails on the z channel or c channel where insulation holds moisture due to A.C. system.I have to ask was this house hit by a hurricane?Was this roof exposed directly to salt water?

Another roofer here said his opinion is that the rust started because they didn't peel the plastic off some of the folded edges and the plastic covered spots held water and therefore rusted. He claims he's seen it a lot. Its hard for me to believe. Whadda yall tink?

I can't think of a single good use for galvalume. Yet people keep selling it as a 50yr roof. I'm just doing my best to expose these P.O.S. products. All the customers hear is "metal lasts forever" and everyone in the industry just agrees and deposits their check. There's a building here in nassau, a couple hundred squares, they had to rip it off and replace it with aluminum before it was completed cause it was rusting before they were even finished. That building is a couple miles inland.

I can't think of a single good use for galvalume. Yet people keep selling it as a 50yr roof. I'm just doing my best to expose these P.O.S. products. All the customers hear is "metal lasts forever" and everyone in the industry just agrees and deposits their check.

That's why the seams have to be flat-locked with a sealant to imbed the cut edges in.