Grand rib 3 style metal roofing can be separated from the moisture barrier by minimum nominal 1 x3 yellow pine battens spaced on maximum.
Pro rib steel roofing purlin spacing.
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At bottom of opening slit panels or.
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Install panels direct ly to wooden framing.
Noise is usually not a factor if you are installing a steel roof over asphalt.
Fyi we run purlins on 3 5 feet on center depending on size of purlin.
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 emseal closure 3 inches back from metal.
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.
403 279 2766 skylight chimney cut opening in roof panel.
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Without a set of blueprints with a pe s seal you have no option but to follow the inspectors gig.
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.
Use 5 purlin spacing maximum install panels note.
Figure 7 screws should be placed on both sides of the ribs at both eave and ridge.
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.
Rib of roof panel with screws on every rib along both sides of rib.
Purlin spacing is dependent on profile of the metal and gauge plus snow and wind load plus what the rafters are designed to carry.
Do all roofing projects require purlins.
Install panels on solid decking install plywood deck.
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This option not recom mended for roofing a heated space with no insulation or vapor barrier.
Steel roofing can be costly but it is a lifetime investment.
Crown of the rib to secure the side lap.
We do recommend it however.
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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.
Fastener spacing may not exceed 1 1 2 38mm.
Premium pro rib steel panel substrate shall be.
The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.
Walking or standing on a metal roof which does not have a plywood or other deck beneath it is not recommended.
Maximum purlin spacing for roof 5 on center option 1.
5 rib metal roofing system ordering installation guide.
Purlin spacing must be uniform and carefully measured.
For panel lap details see figure 5 on page 4.
