Weight fiberglass pergolas are really light. The one we installed on a deck was attached to a plate that attached between the joists. Easy.Upkeep the vendor I used will ship your pergola painted in any color offered by sherwin williams or benjamin moore. The pieces get knocked around during shipping, so they include a couple gallons of touch-up paint. Since fiberglass doesnt move like wood, youre looking at years of life from a coat of paint.Span a fiberglass pergola can span almost 20 feet with no intermediate posts. Thats pretty great.Installation they ship from the factory as kits. End details are done, everything is cut to length, all you have to do is put it up and screw it together.