Install Corrugated Metal Roofing. EASY VIDEO Screw Placement +Screw Location + Overlapping Panels

[Music] when installing 7/8 corrugated metal roofing overlapping the panels correctly and installing the screws in the correct location is crucial in this video we're going to show you how it's done [Music] welcome to the western states metal roofing channel we will cover how to overlap corrugated metal roofing panels screw location screw placement on the panels screw line spacing and how many screws do I need we'll also provide you with a downloadable guide so you'll have this information handy for your installation [Music] prior to overlapping the panel's a strip of double-sided butyl tape should be placed at the overlap apply the sealant tape along the second high seam of the lower Roofing panel the panel should be overlapped by two corrugations flat panels away from prevailing winds whenever it's possible when you overlap the panels you will lose coverage the width of the panel is not the area it will cover for example 39 inch wide panels will only yield thirty four point six seven inches of coverage after the panel side lap 37 inch wide panels will only yield 32 inches of coverage after the panel side lap screw location roofing application do the fasteners go on the highs or lows of the panel when fastening a corrugated metal roofing panel our recommendation is that the fasteners should be placed on the high seam of the panel you will have a more weather-tight panel because the screws are exposed to less water and debris the valley of the low is narrow and the screw head is large in comparison to the width of the valley it acts like a dam as the water passes over it if you have a ceiling washer than has failed it will leak as water passes around the screw you eliminate this problem when the screw is located on the high versus the low of the panel screw placement for corrugated metal roofing 37 inch and 39 inch widths 7/8 corrugated is available in many different widths 37 inch and 39 inch are the two most common sizes the width of panels is dependent upon the manufacturer gauge and finish that's chosen corrugated metal roofing will have lots of screw lines a screw line is a row of screws that spaces a specific distance from the next row of screws each screw line for a panel will consist of four screws place on the high seam of the corrugated panel for a 37 inch wide panel the screws are spaced out so that every third corrugation has a screw [Music] panels that are 39 inches in width will result in an additional corrugation for this size panel you still need four fasteners per screw line which are placed every third corrugation however in one location it will be on the fourth corrugation it is crucial that your screws land on the overlap of panels it should run along the first high seam of the lower panel screw lines facing how far apart of the screw lines when you are trying to determine screw line spacing you have to realize that each job is different some jobs are located in areas that have high winds while others may be located in snow country or a desert you should also make sure that you're in compliance with your local building codes for this reason the spacing between screw lines should be determined by the engineer you should hire an engineer to determine screw spacing if you choose not to hire an engineer then here are some general guidelines metal roofing attaching to solid plywood substrate the overwhelming majority of the jobs we sell are installed with screw lines at 24 inches on center if the job is not installed at 24 inches on center so the next two most common distances are 18 inch or 36 inch on center when in doubt war attachment is better than less attachment at overlaps additional screws should be placed in the middle of your screw line spacing screws at overlap should not exceed 18 inches to 24 inches on center metal roofing attaching to metal purlins an engineer will use a load chart in order to determine the spacing between metal purlins once the purlins spacing is determined then the metal roofing panels are typically attached to every line of purlins how many screws do I need for this calculation we will assume screw lines at 24 inches on center if your screw lines are closer or further than 24 inches on center you can make some adjustments based upon this formula here are two easy formulas for determining the amount of metal roofing screws one take your square footage and multiply by 80% example 3000 square-feet times 80% is 2400 screws 280 screws for each roof Inc squared a roofing square is 100 square feet example 30 roofing squares times 80 screws equals 2400 screws don't forget to order metal to metal screws for the trim to flashings you'll need one lap screw for each lineal feet of trimmer question 4 downloadable guide to this content check out the links in the description below the number one cause of metal roof leaks is incorrect screw attachment check out another one of our videos that shows you how to properly fasten your metal roof [Music]

Channel: Metal Roofing Learning Channel

Views: 286,737

Rating: 4.8730931 out of 5

Keywords: Corrugated metal roofing, Install corrugated metal roofing, screw location corrugated metal roofing, corrugated metal roofing screw location, screw pattern for corrugated metal roofing, Screw line spacing corrugated metal roofing, corrugated metal roof screw placement, Metal Roofing Learning Channel, Corrugated Metal Roofing Installation, How to install corrugated, install metal roofing, metal roofing installation, How to install metal roofing, metal roofing, screw pattern

Id: wMdOnxBmu0E

Length: 6min 5sec (365 seconds)

Published: Wed Apr 29 2020