I wanted a waterproof pot and tried using Mod Podge on terracotta pots as an experiment to prevent mineral buildup and white mold.
I also tried the DuraClear Polyurethane varnish, but don't remember exactly what terracotta pot I used it on.
I would suggest painting terracotta pots with acrylic paint first if you want a waterproof pot.
00:00 Waterproof pot examples
00:18 Waterproof pot with Mod Podge results
02:05 Trying DuraClear Polyurethane Varnish
04:11 1.5-month update on waterproof clay pots
![](https://i.ytimg.com/vi/34oxehsm7k4/maxresdefault.jpg)