We dont really get the weather for sunshades in the UK ...
I mean it all starts out so hopefully with the Easter Bank Holiday when all the B&Q's, Homebases, Ranges, B&R's ... hell even the Monster Supermarkets ..... start forcing new garden furniture, BBQ's, Sunshades/Parasols on the gullible British public in the hope of a Good Old British Summer *
And then it starts to Gale and Rain and the Bravest Brits shiver in their summer dresses as they sit on their newly purchased patio sofa watching their other half, clad in shorts exposing lily-white legs that really should carry a health warning, struggle to light the new BBQ with half a can of lighter fluid in the hope that it might eventually fully cook some sad pink sausages, rather than incinerating the outsides whilst leaving a dangerously raw middle, before raging hunger and a bottle of Prosecco forces the Brave Brits to abandon further cooking and gobble down said sausages along with a floury white bun, some bright red and yellow synthetic sauces and some limp onions.
Sorry, doesnt really help with your question ... just thought it might explain why sunshade/Parasol repair isnt a common past-time in England!.
*Definition of A Good Old British Summer ......
3 hot days and a thunderstorm