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Rather than using a common two-by-four piece of wood for a rafter, you probably will use two-by-six, two-by-eight, two-by-ten, or even two-by-twelve boards. Wider lumber is typically a better choice in a larger building as it provides more sturdiness. Some installers may use wider lumber for rafters near the edges of the roof, where the greatest stress occurs, and save money with narrower lumber toward the middle.

A pergola needs to be anchored, and typically, concrete is the best anchor option. Pergolas should be anchored to a concrete slab or concrete footings, and this is commonly required by municipal building codes. When applying for a permit to install a pergola, be sure to check the anchoring requirements as well.

Clean regularly, treat wood for weather resistance, and inspect for damage to ensure longevity.

It depends on how you’ll use it. Both awnings and pergolas create shelter in outdoor areas, but pergolas have grid-style roofs, which are more open than awnings and not as effective at blocking out UV rays and precipitation. Also, pergolas are permanent structures, so you can’t put them away when you aren’t using them (unlike retractable awnings).