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How To Cut Metal Roofing - In a easy way

 How To Cut Metal Roofing : Today we're going to talk about metal riffing .We've got a big house behind us with a big beautiful red metal roof .We got a lot of do-it-yourself .That are asking all the time I can do this myself ,it looks really easy .And you think you can do it indeed you can there's not a lot of difficulty about putting on a metal roof as long as you understand .The ABC sof what you're doing .

Let me describe a little bit today .Obviously when you're dealing with metal .It's very easy to cut yourself .Lots of sharp edges on the metal so you definitely need a pair of gloves .That are not just impact resistant but are going to keep you from cutting.

Your hands here wearing something like this is definitely a must when you're working with metal. I'm going to do this with just my normal glasses on obviously you're going to want some goggles. As well safety goggles are always why is when you're working with any type of construction .

One of the big things you're going to need on cutting metal is a good pair of shears .That's made for metal they work just like scissors although .You can tape take a heavy heavy gauge metal like that 29 gauge 26 gauge .

Whatever you're working with and it'll cut right through it .Just like you'll your scissors will cut with paper .They also make a an attachment for a cordless drill that's really handy that will do your snipping for you just by pulling the trigger. 

You can cut your round circles and stuff you get into some difficulties with the metal riffing .Because of the contour the ribs that they have make it difficult for things to get sealed up properly .Which is the the hardest part about to do it yourself trying to work with it .

So on a regular single drift you would have a pipe jack like this a boot for various size pipes .And you'll notice if you're doing metal there's just there's no way to get that that boot to seal around .The metal in order to accommodate that on a on a metal roof .

They make about like this you can cut it for various size holes for different size pipes .And then it's it's very flexible here .So wherever your pipe falls in the in the field of your metal roofing .We can put that in we can shape it .

Around the contour of of the ribs and then put put a screw about every inch all the way around this. And that will that will-squeeze that rubber boot down right around these ribs and keep it from leaking .So slick little tools like that you'll need to learn a little bit about if you're gonna try to do this yourself .

I would always recommend of course having a professional do this for you .Because nobody needs a leak on the roof and you really need to know what you're doing we're gonna hop up on the roof here. And show you some of the you can see the bar across here .

Which is a made for keeping your snow and ice from running down and ripping off your gutters .I'll show you what the boots look like on a real metal roof up there .And you can you can see how they fit around the ribs .

How To Cut Metal Roofing


So we're here on the metal roof I want to demonstrate the the fasteners used to hold the metal roofing down. It's not just a normal screw the these screws. If you if you'll notice closely have it sown little washer on it and right below .

The metal washer is another little neoprene washer which is made to do the to seal it watertight .So as you tighten that screw down the neoprene washer goes down to your metal has a metal washer right behind it .

You collapse that neoprene washer just a little bit and that'll give you your watertight seal .Now the problem with these .Sometimes those screws through time are going to work their way loose .If that loosens up then the neoprene washer comes up and allow is going to allow water to get down in the hole. 

Where the screw is I'll show you some examples this roofs been on for a few years .If you'll notice that how high the head of this screw is through the years that's loosened up .And we've gotten the you know there there's nothing sealing water on that anymore .

It's a very simple fix you can you can take your driver .Again tighten her back down .As long as there's still plywood to hold it squeeze that neoprene washer tight again and it'll be good to go .Otherwise you can pull them back out and just simply replace the screws .

So I showed you down by the truck .How they make the the boots to fit around the pipe now .Which so fits the contours of the metal roofing depending on where the rib lies in relation to your pipe .

You need to put a boot on there with lots of screws all the way around it .So it conforms around the contours of your metal .This one through the years apparently it had a leak so somebody has come and really cocked all the way around it .

Ordinarily you don't need to do the caulking those boots themselves will fit tightly enough around the metal to keep it sealed up and keep it leak free .Then you've got a nice rubber Flynn's .That'll fit tightly around your pipe and keep water out .

They make them in various sizes .They also make great big huge ones for things like your solar tubes. Obviously it's the same kind of thing just an adjustable flange .That'll fit around those contours .So let's talk about the metals themselves back 100 years ago .

There were a lot of everybody always talked about tin roofs .Today they're predominantly steel they've got all kinds of painted steel normally a 29 gauge metal .A lot of if you want something a little heavier they'll go 26 gauge .

They even make some stronger stuff .This is a very standard ribbed-design for most residential purposes on commercial buildings. They'll have a different contour and have a standing seam this particular one is called an exposed fastener .

Where you actually see all of the fasteners exposed on the roof .They make one with hidden fasteners in the in the ribs where you never see .You don't see all these screws they're actually hidden and in the installation process .

So some of the various parts are pretty obvious after getting the field on we need a ridge cap to keep the ridge itself from leaking .We've got trims on the rakes when you get to the outside the last piece of metal on the edge of .

The roof will have an l-shaped rake trim here which goes over the edge .And gives an ice finished trim right on to the edge down at the bottom .You'll notice the snow guards the one big problem. 

That people have with metal roofs when if you get three or four inches of snow on a roof like this .That's not very steep the snow will sit on the roof .And then allot a sudden one day you'll slam a door or something will happen .

And cause it to start sliding and once that snow begins to slide this entire run will just rush right off of you're off your roof in the process .A lot of times it'll tend to rip the gutters off but if somebody is walking or standing down there .

You'll have an avalanche of snow to bury if so the little snow guards here are very handy to put on a foot or so above the gutters to keep keep that avalanche of snow from happening all right .So one thing you need to be careful of if you're gonna be doing your own metal roofing .


This particular one is a 29 gauge metal with the painted surface on it .And whatever color you choose you need to realize that although your circular saw will cut through .This metal roof you can put a metal blade on there .

And cut it with that the problem is the speed of your blade gets too fast .It'll create too much heat on this metal to where the paint itself is going to it's going to be damaged to annual in through .

A couple of more years you'll end up with a lot of rust on your metal roof. That you don't want so in order to eliminate the heat getting to great .Always use some snips it's a little bit slower but given the size of the scope of your project .

It's not going to add that much time to it you use your snips to cut off your metal roofing .It'll cut it very easily you can cut round circles for your pipes or anything that you need to your your vents or anything. 

That you need to cut around don't do it like I am always make sure you wear your gloves. It's very easy to cut yourself on the metal roofing .If you don't have some protective gloves on but you don't want to use the the high speed of a skill saw or any type of circular saw .

Because it'll create too much heat and and although it'll look fine the day you'redone .A year or two later you're going to end up with some rust built up there .I'll demonstrate a couple of days we're going to be repairing one .

That has rest problem .Okay so the the snips make it very easy cutting or cutting around these ribs. Sometimes a little more is a little more difficult but you'll you'll notice .

They'll make the contour you can cut yep having all kinds of trouble myself kind of doing straight .If you need to cut circles around taking a little bit of time nip nip nipping .At it as you go you can cut upland over the ribs as well .

And then you can take the time to clean up all the little shards sharp edges .Okay and then your boot or whatever your whatever you're needing on there has its own little seal .That will fit around the contours and seal up over that plenty of screws around the perimeter will keep it all tight and leak free .

So we were talking the other day about cutting metal roofing .And we talked about the importance of doing it with slow speed if you use a skill saw or any fairly rapid blade motion like that it'll create too much heat on the metal .

And cause the paint to start rust and very prematurely .Here's a good example that we're able to show. Now this metal was cut with a skill saw and you can seethe bottom inch .So is all starting torus now this has been fifteen years ago .

Probably that was cut it looks fine when you're installing the roof using the skill saw .You don't notice any problem because when you install it the paint still looks good .

But because of the overheating that happened at the time this was cut you can see it up here. As well for the first three quarters of an inch or so inch and a half down here it .

We're it's just getting rusty and working its way up the up the metal .So in order to prevent that problem make sure you use slow speed cutters you can either do it with hand snips .

As we demonstrate it before you can put some snips on a cordless drill and they get the job done very very quickly for you .


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