Thanks Jim and Charlie for the info and link to growerssupply.com ..... very helpful.
I made some calls, and got rough price quotes from two possible sources of a 10’ x 30’ shade cloth, with re-inforced edges.
the first option is
MighyCovers.com
Shade Sails and Sun Shades - Perfect for Covering Patios
A shade cloth would be an actual rectangle, with straight edges. (not curved edges like a shade sail)
The best possible mesh fabric is their COMMERCIAL 95 - the best mesh they sell. 15 colors.
Due to the situation (a relatively flat installation of the fabric) Sunbrella is not suitable, as water could pool in it in the rain.
The mesh allows water to drain thru it.
with grommets down 2 sides, and with all sides re-inforced the cost would be about $750.
Blocks about 95% of UV.
Lifespan would likely be about 10 years. This is a premium mesh.
I’ll have to see the color swatches when they arrive. In the mail to me today.
or
The * cheaper * option (that only comes in very dark green, and has a life expectancy of about 5 years) is a custom made shade cloth from Growers Supply.
https://www.growerssupply.com/farm/s...RNAL_PAGE_3001
Similar specifications with grommets, and re informed edges is $250 (but with about 1/2 the life span)
Blocks about 90% of UV.
and
The great news is that Growers Supply sells a full range of stainless steel cable, turnbuckles, etc, so I’ll very likely buy the hardware from them, regardless. They have what strikes me as good prices on 3/16th stainless cable. $0.31 feet so the 55 feet we’d need is only about $17.
My plan is to support one side of the sun shade cloth by simply threading the 3/16ths stainless cable (that supports one side thru the shade sail. Both manufacturers indicated that this should work fine.
I’d use turnbuckles to somewhat tension the cable.
John