Screwing Metal Roofing. Correct & Incorrect Way Of Fastening A Metal Roof + Pre-Drill + Screw Guns

welcome to the western states metal roofing channel ready to start your project save fifteen to fifty percent on your materials with our manufacturer direct pricing details in the description below one of the biggest problems on a metal roofing installation is incorrectly fastening the screws best thing the screws correctly on your metal roof could be the difference between a roof those weather tight or one that leaks your roof will have thousands of screw penetrations quite often screws are not installed straight or over tightened or under tightened when this happens it creates leak points at these screw penetrations in this video we will cover the incorrect and correct way to fasten a metal roof removing the metal shavings using the correct tools pre drilling screw holes and chalk lines for a downloadable guide of this content visit our Learning Centre details in the description below the screws that you will be using will have a rubber washer with a metal cap the rubber washer is just a bit smaller than the middle cap you want to tighten the washer so that it spreads to the edge of the metal cap and not pass the metal cap when you tighten the screw it's critical that you don't drive it too far it's a natural reaction to exert too much pressure and tighten the screw as much as possible this will over compress the washer by expanding it too much and therefore breaking the washer if this happens back up the screw to relieve some of the pressure it's also just as easy to under tighten the screw the easiest way to determine if the screw is too loose is to see if you can spin the washer if the washer spins then the screw is too loose and should be retightened you will develop a feel for fastening the metal panels correctly you should always be installed straight and not sideways screws that are installed sideways are tilted will not permit the rubber washer to seal correctly this will create a possible leak point if you notice this has happened then back out the screw and redo it to let screws straight swarf removal swarf is metal shavings and chips that are caused by cutting and drilling roof panels these fragments tend to rest quickly if they are not removed from the roof in a timely manner leaving swarf on the panels after drilling will cause red corrosion spots to form and permanently stain the roof this can and does happen even overnight brush your bloom clean the swarf with a soft brush to remove all the metal shavings before they rust use a screw gun to fasten metal roofing panels using the right tools is an essential step to prevent maintenance issues and roof failures you must fit the tool to the fastener you need an actual screw gun and not a drill or an impact driver when you use a drill and let go of the trigger it does not disengage you have to release the trigger at the correct moment or the screws will be over driven damaging the washers and possibly the panel's using an impact gun to fasten screws is the single biggest cause of screw failures use an actual screw gun with an adjustable clutch and a depth sensing control feature screw guns are designed so that you can adjust the torque which will help eliminate over tightening of the screws in addition use a variable speed screw gun which will permit you to change the speed match the speed of the drill to the substrate or a screw type use a setting of 2500 rpms for wood and steel substrates that are less than 1/4 inch thick setting of 2000rpm for steel substrates that are quarter-inch thick and heavier and the setting of 1000 RPM to 2,000 RPM for 304 stainless steel screws if you're not a metal roofing contractor and don't own a screw gun then the next best option is a variable speed adjustable driver pre drilling if you were to ask to installers whether they pre-drill metal roofing sheets prior to installation you would likely get two completely different answers the screws that are used to attach the metal roofing our self drilling screws this means that the screw will drill its own hole through the metal roofing panel and into the metal or wood substrate technically you don't need to pre-drill the holes however that doesn't mean that it's not a good idea it saves time and produces a better installation when not to pre-drill metal roofing panels if the metal roofing panels are being installed over metal purlins if you choose to pre-drill it's critical that your screw holes don't miss the metal purlins the spacing of the purlins might make it tricky to pre-drill the sheeting in advance if you drill a hole in the wrong location and there is no way to fix the mistake when you should consider pre drilling the sheeting if you are attaching to a plywood substrate if you drill a hole in the wrong location it's only a minor problem as the entire roof is covered in wood you can simply put a screw through the hole solve the mistake the three main advantages of pre drilling metal roofing it listens the likelihood of the screws being installed at an angle because the pre-drilled hole will help guide the screw into the substrate pre drilling leads to straight screw lines at perfectly spaced intervals you will have the ability to run a chalk line at measured intervals this keeps your screw lines straight and spaced out correctly save time by applying chalk line and pre drilling multiple panels that are stacked in addition you only have to clean off the chalk line once which surprisingly is more time-consuming than you would think how to pre-drill the metal roofing panels stack as many panels as you can while allowing the drill to reach all the sheets without drilling at an angle the amount of sheets varies depending upon the panel profile snap a chalk line a chalk line will keep your screw lines straight and spaced at the correct intervals if you are installing the metal roofing over metal purlins it will ensure that you fasten the screw in the center of the purlins using the correct color chalk and cleaning it off with the metal panels it's an important step that most people overlook do not use red chalk the chalk will be difficult to clean off the metal roofing panels especially if you have a light-colored roof use a blue or white colored chalk instead wipe off with a rag after the installation trying to wash the chalk off will not work as well as wiping it down with a rag if you found this video helpful please support our channel by giving us a like and subscribing so you don't miss out on any future content [Music]

Channel: Metal Roofing Learning Channel

Views: 382,242

Rating: 4.8775315 out of 5

Keywords: How To Install Metal Roofing Fasteners, Correct way to fasten metal roofing screws, Installation of metal roofing screws, Screw installation exposed fastener panel, Do's and don'ts of fastening metal roofs, How to install metal roof screws, Fastening metal roofing, screw installation metal roofing, Metal Roofing Learning Channel, metal roofing screws, metal roofing installation, MasterRib, Max-Rib, How to put screws on a metal roof, Pro-Rib, screwing metal roof, fastening metal roof

Id: zpDAeqpNPFc

Length: 6min 53sec (413 seconds)

Published: Wed Apr 22 2020