Can the white flex paint be used on outdoor basement walls as I usually paint but it peels and chips off after a few years.

Hi there Norma, great question! You sure can, and we even have a how-to video for waterproofing your basement with Flex Seal Liquid. Check it out here: https://flexsealproducts.com/blogs/how-to/flex-seal-liquid-for-basement-waterproofing