A.Henri de Marne responds: You could use a system I devised years ago before the advent of variable pitch ridge vents, a design which Air Vent Inc. (800/247-8368) borrowed and illustrates in their product literature for using utility vent on steep roofs.

You have the choice of setting the top of the rafters up 1 inch above the top of the LVL so as to allow an air space or of leaving the rafter tops flush with the top of the LVL and simply carrying the plywood to the ridge, where the two sides will butt (for extra support you can add triangular blocks on top of the ridge beam). If you choose the...

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