Steel Roofing & Siding Installation Guide

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Steel Roofing & SidingInstallation Guide24” Coverage8”¾”2’ Delta Rib36” Coverage9”¾”3’ Magna Rib

TABLE OF CONTENTSPage34-5DescriptionsDisclaimers / Care & MaintenanceSafety Notes / Handling6Storage / Cutting7Insulation/Vapor Barrier/Underlayment8-9Panel Installation10Rodent Guard / C Casing11Jamb Cap / Outside Corner12Eave Trim / W Valley Flashing13Endwall Flashing / Sidewall Flashing14Transition Pitch Change15Prow Gable Trim16Gable Trim / Top Shed Flashing17Ridge Cap18Vent Pipe Flashing19Last Panel Termination20Panel Appendix21Trim Application Appendix22-2324Sliding Door AssemblyContact UsRevised 6/14/20132

DISCLAIMERSThis guide should be read in its entirety before beginning installation. This guide is supplied by Metallion Industries for use by itscustomers. These instructions do not replace or supercede localor state building codes, and do not portray all situations. Contactyour contractor, architect, or local building department for furtherassistance if needed.Metallion Industries will not assume any responsibility forpersonal injury, property damage, or other problems which mayresult from improper installation or other usage of the products.The specifications and drawings in this manual are subject to change without notice or obligation to make changes inproducts previously purchased.CARE & MAINTENANCESteel roofing usually requires very little maintenance. Ifyou have a low pitch roof and/or valleys, you may need to removedebris or residue from the roof to prevent the trapping of moistureagainst the metal. Some flashings may need to be re-sealed periodically in order to maintain optimum weather-tightness.If you need to wash the roof, you can use a pressurewasher and/or use a mixture of one cup detergent (containing lessthan .5% phosphate) mixed with five gallons of warm water. Another mixture could be one cup of household ammonia mixed withfive gallons of warm water.Wear clean, non-marking, soft soled shoes when walkingon the panels to avoid shoe marks or damage to the finish.3

SAFETY NOTESNever use unsecured or partially installed panels as a working platform. Do not walk on panels until they are in place onthe roof and the fasteners are installed.Metal roofing panels can be very slippery when wet, dusty,frosty, or oily. Do not attempt to walk on a metal roof underthese conditions. Wearing soft soled shoes will improve tractionand minimize damage to the painted surface.Always take note of your surroundings when on the roof.Be aware of the locations of roof openings, roof edges, equipment, co-workers, etc.Always wear proper clothing and safety attire. Wear properclothing, eye protection, and gloves when working with sheetmetal in order to minimize the potential for cuts, abrasions andother injuries. Hearing protection should be used when powercutting metal panels. When working on a roof, fall protection ishighly recommended. Follow all OSHA Safety requirements.Installing metal roofing or flashing on windy days can behazardous to your health and should be avoided if possible.4

HANDLING PANEL BUNDLESHandling panels with care is important, from the time it arrives atthe jobsite until it is installed on the structure. Depending on howthe panels are packaged, it may be necessary to use a spreaderbar with a crane or forklift. Reckless maneuvering or too muchhandling and moving can cause the panels to rub against eachother and mar the painted surface.Use double straps when liftinglong loads with a crane, not single5

STORAGEStore the panels and other materials in a dry, well ventilatedarea, away from traffic. Storing panels in a wet condition cancause the deterioration of the painted surface, so you need toelevate one end of the bundle (see illustration). Any moisture thatmay have accumulated during shipping can then run off.If outdoor storage cannot be avoided, protect the metal with abreathable canvas or waterproof paper cover. Leave the bottomof the cover loose to allow air circulation. Do not use plasticwhich causes sweating or condensation.CUTTINGSteel panels and trim should be cut with nibblers, tin snips, aprofile shear, or a circular saw with a steel-cutting blade. Whenusing a steel-cutting blade, make sure that all filings are cleanedoff of the panel after cutting, as they will rust and pit the surfaceof the panel.Some homeowners use a wood saw blade turned around backward in the saw, which is generally not recommended. Do notuse an abrasive blade—it will burn the paint and galvanizing atthe cut edge and will void the warranty.6

INSULATION/VAPOR BARRIERWe recommend that you install a vapor barrier (eitherinsulated or non-insulated) before installing the roof panels. Thiswill help prevent your building from sweating. See a Sales person for condensation control options.Ruffco or similar non-insulated vapor barrier is installedthe same way as CCB (condensation control blanket), Low –EFoil, or Vapor Plus. Start the roll at the eave line and unroll it upand over the ridge down to the opposite eave line. If you areventing through the ridge, you will need to cut the vapor barrier atthe ridge and leave a 3-4” gap to allow air movement. The insulation should be used as soon as possible after it arrives at the jobsite to minimize chances of damage.Over solid sheeting, apply either 15# or 30# felt paperhorizontally starting at the eave line lapping a minimum of 3” asyou work towards the ridge line. Ice and water shield (smooth,not granulated) is also an acceptable underlayment. A #14 Type“S” screw may be used in this application for better wind resistance.FRAMINGGirt spacing should be no more than 36" for normal sidingapplications. It is recommended that the purlin spacing for roofing be no more than 24" for normal application with a slope of atleast 2-1/2" per foot. See your engineered plans for designspecifications. The recommended slope is 4" per foot for largerbuildings with long runs.7

PANEL INSTALLATIONBoth roofing and siding should be started vertically atthe end of the building, opposite the direction of the prevailingwinds (see illustration #1). Prior to installation of panels, anyflashing going underneath the panel should be installed. Otherwise, always begin flashing installation from the bottom and workup. It is imperative, when installing PBR, that the short leg of thepanel be installed on top of the full load-bearing leg. When installing Magna Rib or Delta Rib, you must make sure that theside of the panel with the anti-siphon groove is the bottom lap.(See Panel Appendix page )Place an alignment line along the gable end where thefirst roof panel will be installed. Check roof for squareness bymaking a 3' line across the eaves. (see illustration #1). Completing the 3' x 4' x 5' right angle triangle should place the 4' edge(or the 3’ edge) of the triangle parallel with the gable. (You canuse any multiples of 3’, 4’, 5’, such as 6’, 8’, 10’, or 9’, 12’, 15’ fora larger , more accurate square.) If the roof is out of square,align the first panel with the eave edge. Slight variations or out-of-square conditions can be covered by the gable trim.8

PANEL INSTALLATION, cont.Overhang at eave edge: depending on the pitch of theroof, the use or absence of gutters, and other circumstances, werecommend an overhang anywhere from ½” to 2”. The ridge capwill compensate for slight differences in panel length at the peak.Align the edge of the first panel with the alignment lineconstructed along the starting gable. Lay down the second andthird panels, checking the alignment, and making sure they aresquare. This will ensure that a sawtooth effect at the eaves andridge is avoided.Fastening: The screws should be installed in the flatarea adjacent to the ribs, and tightened so that the washer iscompressed properly. Proper tightening and location of fastenerswill help insure a leak-resistant roof. See Panel Appendix pagefor illustrations.Siding: Metal siding should be installed using the standard fastening and overlap patterns. Do not run the siding sheetsall the way to the ground. Instead, use a protective base of concrete, treated wood, or similar material and stop the siding sheets6” above grade.Weatherproofing: On the PBR profile, installers shoulduse sidelap tape and stitch screws where the sides of the panelsoverlap. Although it is not required, these accessories will offerbetter leak protection as well as a better wind uplift protection.For more complete weatherproofing, use closure tapes, regardless of pitch. When endlapping panels, Clear Seal or butyl tapeshould be used at the end of both the top and bottom sheetswhere the sheets overlap. End lapping, depending on the pitch ofthe roof, should never be less than 12".After you are finished installing the panels and flashing,make sure to remove all tools and debris from the roof. Metalshavings may cause rust marks.9

RODENT GUARDRodent Guard seals off the bottoms of panels at the floor level,and helps to prevent the entrance of rodents and insects. It alsoserves well as a base for the setting of panels.C CASINGC Casing is used to trim aroundthe bottom, sides, and top ofwindows and doors. It can alsobe used to cap raw panel edges(vertically) or to cap the panelend (i.e. horizontally at the top ofa wall).10

JAMB CAPJamb Cap is used fortrimming around overhead doors. It can beeither a “C” shape or “L”shape. There are twooptions for fastening: nailthrough each small legon the “C” shape, orscrew through the faceon the “L” shape.OUTSIDE CORNERThe Outside Corner straddles the ribs of the panels where theymeet at the corner of the building. The Inside Corner has similar dimensions but with a reverse middle bend.11

EAVE TRIMInstall the eave trim using low profile screws or nails before installing the panels. For 2/12 roof pitch or less, apply a bead ofClear seal on top of the trim, below the line of screws. You mayalso use solid foam closure under the panel on top of the EaveTrim to stop rain, snow, etc. from blowing in underneath thepanel.W-VALLEY FLASHINGInstall W-valley flashing with low profile screws. Cut the panelsat the angle of the valley. For 2/12 roof pitch or less, apply abead of Clear seal on top of the W-valley, below the line ofscrews.It is important to leave 4 - 6 inches between the end of the panels and the middle "V" of the W-valley to allow water and debristo drain off properly.12

ENDWALL FLASHINGEndwall is used where the end of the panel runs into the wall.After installing panels, fasten lower edge of flashing to roof panelribs with ¾” stitch screws. For the most weather-tight application, the 3” upper leg needs to go behind your wall siding. If thatis not an option, fasten screws through the upper leg of the flashing into wood siding with Clear behind the Endwall flashing. Ifyou have metal siding, you may also install solid foam closurebehind the upper leg of the flashing to stop rain, snow, etc. fromfalling in between the ribs of the panel. You may also install solidfoam closure to stop rain, snow, etc. from blowing in between theroof panels and the bottom leg of the Endwall flashing.SIDEWALL FLASHINGSidewall flashing is applied when the side of the roof panel runsalong an adjacent wall. For the most weather-tight application,the 3” upper leg needs to go behind your wall siding. If that isnot an option, see the instructions listed above under EndwallFlashing.13

TRANSITION PITCH CHANGELOWERUPPERInstall panels on the lower pitch first. Under the PitchChange, you may want to install solid foam closure to stop rain,snow, fir needles, etc. from blowing up under the flashing.Install the flashing over the lower panels using 3/4”stitcher screws at each rib and/or low profile screws on the topleg of the flashing, under where the upper panels will be.Before installing the upper panels, lay a bead of approved sealant for the upper panels to sit on. Be sure this beadis downhill of the low profile screws. Install the upper panels,covering the low profile screws.Note: When installing the lower roof’s panels, make sure toleave enough room for the flashing and the upper roof panel ribs.Note: We need both pitches to fabricate the flashing. Give the pitch of the upper roof, then the lowerroof; e.g. 5/12 - 2/12.14

PROW GABLE TRIMThis gable trim is designed for use on a prow-type roof where theridge is wider than the eave. It is applied the same way as WValley. It is basically half of a valley.Fasten the Prow Gable at two places: to the fascia board every12”-24” with exposed painted trim fasteners, and on the roofdeck with low profile screws under where the panels will be.Before installing the panels, run a bead of approved sealant ormastic under the panels below the screws as illustrated above.Be sure to back the ribs off of the panels about 2 to 4 inchesfrom the raised portion of the flashing to allow water and debristo drain off the roof and not accumulate.15

GABLE TRIMThe Gable trim is installed on top of the panel over the rib beforethe Ridge cap is installed. It is fastened to the fascia board approximately every 24” with 1/4” hex head screws.If the rib of the last panel does not end flush with the gable edge,you’ll need to make an artificial rib by cutting the panel vertically¾" past the fascia and bending that ¾” up to form a rib. Refer tothe Last Panel Termination page for detailed instructions.TOP SHED FLASHINGThe Top Shed flashing is simply a RidgeCap for a singlesloped roof. Refer tothe section on RidgeCap for venting, nonventing, and closureoptions. Install the roof panels by liningthem up with the eaves. After the Gabletrim is installed, fasten the Top Shedflashing at every rib of each panel with 3/4” stitch screws. Youmay also fasten through the face of the Top Shed flashing intothe fascia or the wall siding.16

RIDGE CAPThe Ridge cap is used to seal the point at which two upwardslopes meet. This can be both along the ridge of the roof as wellas a covering for a hip. Install the roof panels by lining them upwi