I tried only replacing the upholstery on my old chairs. I liked the result.

Yes, I have repaired old furniture by myself, and it can be a rewarding experience. It's important to assess the repair needed and gather the necessary tools and materials. I should say, Flex Seal can be helpful for certain types of repairs, such as sealing gaps or cracks. But it is better to call the flex seal customer service to make sure the product can be used on the chosen material. Also, you can look for helpful online tutorials.