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Question DetailsAsked on 6/16/2014

How much would it cost to have a carpenter build a simple wood pergola that is 14 x 25 ft?

I would like to do this as reasonably inexpensively as possible. Half of the top would be a trellis (and have vines eventually growing through it) and half would be open (perhaps string lights across it). I have an uncovered wood deck that is the same size (and would like to cover it).

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Here is an AL article on the subject -


http://www.angieslist.com/articles/pa...


Typical number, just off the top of my head without looking anything up - about $15/SF for ready-made kits, $35-70/SF for stick-built depending on mateials used, finishes, etc - cheapest for palin painted or treated wood, most expensive for synthetics and aluminum. More than that for stainless.


This all assumes your deck can handle the added load - which for a normal pergola is not much load unless you are going to load it up with heavy vines. Worked on one legal case job once investigating the collapse of a deck with significant injuries at a tourist hotel - turned out the pergola had massive multi-layered vines on it that had built up over more than 100 years, very large and woody, totalling over 100psf load - over 2-1/2 times the rated average deck load. Have also seen pergola failures due too massive hanging pots and planters full of reall topsoil (rather than lightweight potting soil) suspended from them and saturated with rainwater.


A;so don't forget lateral loads - kids swinging from them, hurricane/tornadic wind loads have brought down a lot of pegolas and gazebos because there was no lateral load capacity, especially if not tied to the house anywhere.


Also have to consider snow load on vine-covered pergolas because snow can build up full depth and not melt away evenn as much as on a typical roof because it is fully air cooled.

Answered 5 years ago by LCD




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