How to Install Standing Seam Metal Roofing

what's up y'all Logan Parker heirloom builders welcoming you back to another episode on our series building it better [Music] today we're installing a standing seam metal roof we're gonna install solar panels on the south-facing roof that you can see right behind me and we don't want to worry about leaks or replacing this roof for at least 30 years we're also going to be collecting rainwater off of this roof surface so we want our rainwater to be as clean as possible and definitely avoid the petroleum residues that you might get from asphalt shingles I've learned a lot from the mistakes I've made over the last 20 years and I wanted to share that wisdom with you so that you can avoid those same mistakes and build a better home so here we go let's talk about roof underlayment for a minute the purpose of roof underlayment is to provide a waterproof layer that drains water away from your wood roof framing typically most underlayment installation is simply a layer 30 pound felt paper we go above and beyond to extend the life of the roof it's cheap insurance we install grace select as it seals around fasteners to keep a leak-free roof all right so now we dive into measuring and layout knowing how to measure and lay out your roof is super important after all you don't want to stop in the middle your project and realize you're way short of a critical material we want to make sure that we have the same distance between the edge' roof and the first rib on one side as we have on the other side so what we're gonna do there shift the panels and split the difference so that we have a 10 inch wide rip on the right and a 10 inch wide rip on the left you might be thinking hey hold up Logan how do I even know when to install a metal roof to that I would say install roofing after your roof framing is complete and ideally when you're finished fascia and underlayment is installed like we have here you also want to have your roof penetrations and vent flashings figured out and on-site plumbing vents and other vents like chimney pipes can and should be cut in after you have a chance to lay out your panels so they don't land on a rib or in any other awkward spot to waterproof so make sure that you order striations on your metal panels it'll keep the roof looking really good and keep it from bubbling up and doing that oil canning that nobody likes to see so will your roof require venting that's a really important question to ask in this case we're spraying eight inches of open-cell spray foam insulation in the roof deck typically with that kind of installation you won't need to vent the roof because it'll be all sealed up from that spray foam um however we're using a product called tech shield that has an aluminum face on the bottom which reflects all the radiant heat from the roof and that needs a 1-inch airspace so we have to put vent baffles up in the rafter bays to create some airspace and have that breathe essentially we're creating a vented roof so we've got a vented soffit that's gonna allow air to get in from the low end of this roof right down below and travel up the rafter bay through that 1-inch airspace and out the roof if that moist air gets trapped inside of our roof framing and it gets really cold outside that moist air is gonna condense into little water droplets and where is it gonna go but rot our wood framing so we really have to make sure that we vent this roof if you got airspace in your roof you got a vent it get that moist air out of there we're installing spray foam in the rafter base here checking for square with diagonals and pright so squaring up your sloped edge to the drip edge and snapping a reference line for the first panel we're coming up eight inches from each corner of the roof snap a chalk line and then from there we're gonna do a 12 16 20 foot right triangle to make sure that that first panel layout is square to our drip line we're gonna pull 16 feet from here and we're gonna pull 20 feet on a diagonal and then wherever those cross 16 and 20 is our point so mark that point and then snap a line straight through that point where the 16 and 20 intersect and bam you've got a square line to your drip edge and that's the reference line that you're going to measure your first panel to alright so step 3 installing drip edge flashing and the case of standing seam metal roofing the drip edge serves as a cleat to hold the bottom edge of your roof panels so that wind doesn't pick it up and blow it off and it creates a waterproof transition from your metal panel straight into your gutter so it's really important to either tuck that drip edge underneath your underlayment or if you have to like we do here tape the drip edge to your roof under the nail or screw the drip edge flashing every eight inches in a stagger pattern and just make sure that it goes into your sub patient wood framing for this rake that goes up right here that's going to be a square drip edge it's gonna be bent at 90 degrees because it's following the roof pitch all the way down for the drip line down here we have a 10 and 12 pitch on this gable roof and so we want to bend that drip edge so that it's plumb because we've got plumb cut fascia and it's the top edge is gonna have that 40 degree slope for that 10 and 12 that's really important because if you try to put a square drip edge on a pitched roof it's going to go like this and then what's going to happen is it's it's going to make a dip at the end and it's going to pull your metal roof panels up like that [Music] [Music] layout is key spend the time upfront measuring and making sure that your layout is right and the rest of the panel installation is going to go smooth I'll guarantee it nice so you have two clips within the first eight inches of the bottom to keep that wind from picking up your roof and then every two feet from there you're going to fasten another clip so types of flashing and where you'll need them we're gonna put a link in the description below from a manufacturer's website on particular flashing so that you can make sure you've got the right ones for your roof this is a simple gable roof so all that we need is drip edge and ridge cap your ridge cap covers the gap between both ends of your roof and since the standing seams are an inch and a half high you're gonna have a gap between each one of those panels so right there you're gonna install a Z closure to provide a waterproof anchor point for that ridge cap to connect it's gonna allow moist air to escape but it's going to allow a lot of windblown rain to get up in there to take a piece of the Ridge up on top of the roof set it on top to see how it planes in and take a pencil and mark both sides of your ridge cap to make sure you know exactly where your ridge cap is going to land and exactly where you need to fasten those Z closures secure each one of these pieces of Z box with two screws in each and make sure that you've got butyl tape to seal up the bottom edge where the Z bar attaches to your roof panel now that you got your clips and your Z bar installed it's time to set that ridge cap hook one side of the ridge cap him on anchors making sure that all the clips are hooked you want to really get under there and make sure that that all of the clips are hooked because sometimes some of those can hang low and they're not doing anything then stretch the flashing over top of the ridge on the other side and hook it onto the other Z bar then all you got to do is come back and take an eighth inch drill bit drill a couple holes through the other edge of the roof cap through the z bar and pop rivet them together then you've got a waterproof roof now it's really important to make sure that you're not installing the bleeding edge of your z bar your z closure on that chalk line because one that chalk line is actually on the outside of your ridge cap and you want to actually give a little bit of expansion and contraction room and a little bit of rim because remember you've got to you're hooking one side of the ridge cap and you're stretching it over the ridge and hooking it onto the other so you have to have enough wiggle room to be able to get it over and hook back so you don't want to make it too tight where it's just no way you can stretch that ridge cap to hook your other side of the z bar and don't forget to overlap each one of those pieces of ridge cap four inches and caulk the joints [Music] so this is where it starts to get pretty weird but it makes your roof super awesome at each peak on either end of your roof what we're gonna do is we're gonna run z bar horizontally like all the rest of them and that we're gonna run up the roof back down the peak and back to the last rib that Z bars got to go all the way to the very edge of the roof so that there's no metal panel break at the ridge so bold and miter the ends of the ridge cap around that Z closure on the ends for a nice waterproof look the Devils in the details that's what they say and then just like that you're done pat yourself on the back baby you just learned how to build a better roof that'll last a lifetime and save a bunch of money doing it mmm how we gonna get safely down from this roof wants to put the ridge cap on it seems really sketchy so get out Mike's gonna gusset to tie to 2x4 to span the ridge so have a safe place to stand on this 10 and 12 super steep pitch and be safe and actually not be fumbling around with drills and drivers and screws and clips and all that so here we go [Music] for more information on other flashing and installation details follow the link in the description below and hit us up with comments and questions I hope you found this video helpful smash that like button if you got something out of it and consider subscribing to our channel for more tips on how to build a better home stay tuned for our next episode where we'll be installing hardiplank siding and trim until then good luck and peace out [Music]

Channel: HeirloomBuilders

Views: 331,588

Keywords: Logan parker, heirloom builders, how to install metal roofing, install standing seam metal roof, galvalume metal roof, installing ridge cap, grace select, building it better, roof underlayment, venting a metal roof, getting down safely from a steep roof, wuco roller, how to square up a metal roof, how to square a metal roof

Id: GNX53LoiHlQ

Length: 12min 22sec (742 seconds)

Published: Sat Sep 07 2019