Mobile Veggie Garden

Step 5 Painting

I used weatherboard sealant-grade silicone and ran a bead along all internal edges.
(I couldn't find any decent fillers and this was supposedly good for sealing against wood).

I then painted a white primer inside and out and finished with two coats of exterior grade paint.

Update:
I initially forgot to mention that I have used several layers of clear pond paint on the inside.


I'll try to summarise the details:
I had Pond paint left over from a fish-pond-in-a-wine-barrel project that I never used it for (turns out the fish were okay in wine-soaked wood and the wood in the wine barrel expanded enough to hold water!).

The pond paint container lists it as non-toxic and suitable for constant exposure to wet areas.
I wasn't 100% convinced that it was perfect or perfectly safe to grow veggies in, but a> I had it sitting there and b> I didn't find any better alternatives for looking.
Similar commercial applications I found used tar to seal wine barrels. Tar doesn't smell great to me, so I can't imagine it being great for your food to grown in.
Thanks to MikeyNCat for reminding me to post this update.