Hey, you don't have to buy a whole new umbrella anymore....
I had a natty old mildewed Sunbrella umbrella and looked at replacing it. Rather than the $250 I would have had to pay for a whole new umbrella, I thought I would try Formosa replacement canopy for 10% of the cost of a whole new umbrella. Mind you, it is not Sunbrella material but it is fine and serves the purpose. I ran into a small problem where the grommet at the top was too small for my current umbrella's finial to fit into. The canopy I was replacing had a metal thingy with teeth that pierced the old umbrella fabric and held it at the top. Well, I pried that thingy off but it got pretty twisted up. Thought I would go to the hardware store and find a similar piece but no luck. I got home and hammered the old one, used a exacto knife and cut out the new grommet on the new canopy and just whacked the old baby into place. It's fine.
So happy to be able to replace the canopy and keep the perfectly fine working umbrella frame. For the $30 it costs, I could replace it every year but looks like it will hold up for quite a few years. Not sure what the elements will do to the black color but has been up a month or so and so far so good.