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Pro rib steel roofing purlin spacing.
Install emseal closure 3 inches back from metal.
Do all roofing projects require purlins.
Premium pro rib steel panel substrate shall be.
Purlin spacing must be uniform and carefully measured.
Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig.
Rib of roof panel with screws on every rib along both sides of rib.
Steel roofing can be costly but it is a lifetime investment.
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Galvanized steel which is created by using a soft layer of zinc to protect the inner layers is the most common type of steel roofing.
The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.
At bottom of opening slit panels or.
Keep metal roofing back 3 inches.
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Nominal thickness of 0180 g 100 galvanized coating plus zinc phosphate per astm 653.
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.
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.
Install panels on solid decking install plywood deck.
Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry.
403 279 2766 skylight chimney cut opening in roof panel.
Fastener spacing may not exceed 1 1 2 38mm.
Figure 7 screws should be placed on both sides of the ribs at both eave and ridge.
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We do recommend it however.
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.
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Use 5 purlin spacing maximum install panels note.
Fyi we run purlins on 3 5 feet on center depending on size of purlin.
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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This option not recom mended for roofing a heated space with no insulation or vapor barrier.
Crown of the rib to secure the side lap.
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Noise is usually not a factor if you are installing a steel roof over asphalt.
Maximum purlin spacing for roof 5 on center option 1.
Install panels direct ly to wooden framing.
Walking or standing on a metal roof which does not have a plywood or other deck beneath it is not recommended.
