PVC would work, but there are other manmade products that I like better because they look and feel more like wood (Boral, for example, or some of the James Hardie products). Boral is available in 3/4", 1" and 1.5" thickness, and up to 12" wide (actual width 11 1/4"). You won't find it in a big box home store, but many building supply companies will carry it. http://www.reisterstownlumber.com/wp-content/uploads/2016/06/Boral-True-Exterior.pdf
Bruce
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pergola across walkway from cement patio and back porch to new deck with pergola?
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