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Why Metro? Why Metro? Part 2

This article has been modified from the video dialogue for written clarity only.

Opening Dialogue:old steel image
Pete Croft, Metro Roof Products

In the time it’s taken mankind to progress from smoke signals to cell phones, roofing technology has advanced from thatch and animal skins through clay tile, asphalt shingles, all the way to stone coated steel roofs.

new steel imageThe early metal roofs came close to the perfect combination of weather tightness and durability. Then steel brought economy into the picture. The next step is the one that we, at Metro, have already taken toward the roof of the future.

We’ve brought the steel roof into the 21st century from this to this. By coating steel with a high viscosity acrylic resin adhesive and then embedding finely grated, oil free natural stone granules that are themselves coated with a ceramic layer that can take almost any color.steel coils image

Metro stone coated steel panels begin their life as these 10,000 pound coils behind me. They have a corrosion resistant finish that applied at the steel factory that consists of 45% zinc and 55% aluminum.

pressed steel image

From here, we’re going to move them into our press department and they’ll be pressed into panels for your home. In one end of our plant we stamp out 1000’s of these panels each day, in shake, shingle and roman tile patterns.  The steel is specially engineered to accept the high stresses that these distinct details create in each Metro profile.

In the other end of our plant, we unload the stone granules that will give our panels their surface character, color and protection from the sun.

grated stone imageWe’re here in the stone mixing department where we take large bags, 3000 pounds in weight, of our base color granules that are craned over to our mixing machine and in a few seconds, we’re going to turn this machine on and you’ll see how we blend those granules to make the right color for your roof.

Now, granules are made of natural granite, grated to a uniform small size and colored with a fade proof ceramic coating. They’re small enough so that when they are applied to the panel, there will be no gaps in coverage and we back that coating up with a 25 year appearance warranty.

steel coating imageOne reason we can give that warranty is that unlike some of our competitors, we use oil free stone. This non-oiled stone ensures a perfect bond with the acrylic binder for a detail rich, long life roof.

We regularly monitor our daily production to ensure color consistency throughout the run. We carefully control the viscosity of our specially formulated adhesive acrylic binder so that just the right amount is applied to the panel for good adhesion of the granules.

At this stage the coated granules imageacrylic base coat has to be wet enough so that when the stone chips are applied, they’ll get embedded up to their knees in the base coat. The visible portions of the chips are exposed to provide a long life defense against ultra-violet radiation and the weather.

glazed stone imageThe panel receives a clear over-glaze coat and the finished stone-coated panel comes out of the curing oven ready to guard you against the elements beautifully and in a color choice that is perfect for your home. Of course, throughout the whole process and for each color batch, we test for depth of coverage for the acrylic and for resistance to abrasion.

Back to Toppressure test machine image

This machine simulates an installer’s boot pivoting on top of a panel for adherence of the stone coat through all the flexing and bending that goes on during installation and performance of the entire panel when exposed to 100% humidity for 24 hours.

So, now let me show you how this all comes together for a roof for your home.

roof installation image

One week ago, the contractor came out and did a material estimate on this roof. Two days ago the entire asphalt shingle was torn off and taken to a landfill to dump. The solid sheathing was inspected, dry rot and termite areas were replaced, underlay was installed over the entire surface and perimeter flashings were installed around the roof.

x pattern installation imageAs you can see, these guys are a little bit ahead of us, they’ve installed the first row and now, they’re installing the rest of the panels up the roof. They’re fastening the panels through the nose, in an X pattern of fastening and this is a batten-less application.

battens imageGenerally speaking, our roofing panels can be attached to a roof either without or with battens. These are narrow strips of wood that attach to the roof deck and elevate the roofing panel, creating an  airspace underneath. Metro panels are shaped in a way that creates their own insulating airspace so battens aren’t needed. Still, there are times and places where battens are desirable.

If you want to learn more about battens versus batten-less roofs, we’ve created a page about just this subject at the Metro website. We’ll give you the address at the end of the jack image

One of the things that I’m most proud about at Metro is the line of smart accessories that we’ve developed. They consist of the Smart Jack which is designed to go around pipes like this and then it’s capped off with this fully integrated smart sleeve.

smart vent imageOur smart vent is fully integrated with the surrounding panels and that’s because of the overlap and the interlock of the smart vent. It’s self flashing and it provides a perfect weather tight seal for the roof. The smart vent functions by taking the hot air out of the attic. Metro smart accessories also give you a roof edge, the perfect finishing touch.

Back to Topdrip edge and bird riser image

This is our drip edge flashing and this is our bird stop riser metal, designed with a three dimensional return detail so that it will look great from the ground.

Well, that’s it for our “Why Metal? Why Metro?” story; at least the part of it you can see.  Behind the scenes, we work very hard to maintain a network of distributors and customer oriented contractors in every part of the country to make sure that when you choose a Metro Roof, you’re well served every step of the way.distributor image

The distributor’s job is to make sure that your contractor gets whatever he needs when he needs it for the roof that you want. That includes samples to help you make decisions about your roof and it also includes timely delivery of your roofing materials to keep your job on schedule.

training imageWe offer all roofing contractors an on-site training program that will help you narrow the field to find just the right installer for your new Metro roof. The roofing crews that complete this training are up on all the latest designs and accessories as well as special installation techniques that we, at Metro, continually develop and update. Contractors who complete this training can be easily found on our website.

Back to Topmetro product image

If you’re thinking about a new roof, we’d gladly have you in our family of happy customers. The people who say:



happy customer image

We’ve got an Ashwood Metro II and I absolutely love it.

happy customer image

I love my roof. Love it.


happy customer image

We’re going to put a steel roof on it.



happy customer image

Oh, We love it.I loved it and I still love it. I think that we would definitely do it again.



metro logoWe’re thinking about you when we say “Smart Roofs for Smart People”. If you have any questions, give us a call.




End of Video or read Why Metal? Why Metro? Part 1

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