the rafters are cut to size and a facia is attached. with the facia in place the slope of the roof can be determined. string lines are setup to show the slope and purlins are manufactured and screwed to the rafters to take the tin. sisalation is draped across the purlins and clips are screwed through the sisalation into the purlins. finally the tin is clipped into place. done. there is a roof overhead. the new space has been created.

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