Deck Superstore Rough-Sawn Pergola System Installation Manual - Page 10

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Shade Purlins

Attach Shade Purlins with a 12" overhang on

each side. It helps to measure, calculate

spacing, and mark the Shade Purlin

locations on the Outer Rafters.It also

helps to pre-drill and pre-load the

Shade Purlins with 5" screws on

the ground before installation.

Purlins are usually spaced 8" OC.

5" Construction Screw

per Purlin/Rafter connection

You can put fewer screws as long as the

purlins are secured at each end and

staggered at least at every-other rafter.

Be sure to calculate, measure out,

and then mark your spacing so it

looks even on both end of

the rafters.