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Pro rib steel roofing purlin spacing.
Maximum purlin spacing for roof 5 on center option 1.
Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig.
Grand rib 3 style metal roofing can be separated from the moisture barrier by minimum nominal 1 x3 yellow pine battens spaced on maximum.
This option not recom mended for roofing a heated space with no insulation or vapor barrier.
For panel lap details see figure 5 on page 4.
Pdf 2 mb chimney flashing instructions.
Crown of the rib to secure the side lap.
Rib of roof panel with screws on every rib along both sides of rib.
Do all roofing projects require purlins.
2 1 3 4 5 figure 5 p install metal directly to wood metal frame use maximum 2 purlin spacing install metal do not use this option for heated spaces install metal on solid deck.
Install panels direct ly to wooden framing.
Figure 7 screws should be placed on both sides of the ribs at both eave and ridge.
Steel roofing can be costly but it is a lifetime investment.
For 2 x 4 purlins use 9 x 1 woodfast screws fastener spacing panel screws per lineal foot of roofing 12 4 5 18 3 0 24 2 5.
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Purlin spacing must be uniform and carefully measured.
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Install panels on solid decking install plywood deck.
Premium pro rib steel panel substrate shall be.
Walking or standing on a metal roof which does not have a plywood or other deck beneath it is not recommended.
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Install emseal closure 3 inches back from metal.
5 rib metal roofing system ordering installation guide.
At bottom of opening slit panels or.
Noise is usually not a factor if you are installing a steel roof over asphalt.
The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.
Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern.
We do recommend it however.
Keep metal roofing back 3 inches.
403 279 2766 skylight chimney cut opening in roof panel.
Use 5 purlin spacing maximum install panels note.
Nominal thickness of 0180 g 100 galvanized coating plus zinc phosphate per astm 653.
Fyi we run purlins on 3 5 feet on center depending on size of purlin.
Pdf 27 kb menu.
Roof sheathing consists of premium pro rib steel panels attached to the top edge of roof purlins in accordance with manufacturer s specifications or as shown on design drawings.
