@bossyvossy that's a nice product and I bookmarked it. Unfortunately, it doesn't work for this case. See the photo below. The planter is on top of four pavers as its base. That dolly would roll around unpredictably, and the weight of the planter would collapse a little plastic cart like that. I need something that can handle hundreds of pounds of weight and that would keep the planter stationary on its paver base.

I posted to give you an idea. You can shop for caddies based on weight capacity. I have similar planters as big as yours and use steel caddies but they are slowly rusting so I’m leaning towards some type of industrial rubber caddy next go around. I have a few years though, what I have is still sound.

How much space are you trying to get? I glue old porcelain penny tiles to the bottom of pots to give a little air gap. Evenly distributed, tile can take quite a compression load.

@Nil13 porcelain penny tiles would fit the bill, but those cannot be cheaper than plastic spacers like the ones I posted?

On a separate note, would an epoxy like Gorilla Glue be a good adhesive to attach either porcelain or plastic to a cement paver?

If containers are that heavy, seems like you wouldn’t even need adhesive, especially If you don’t plan to move them. Personally, i like to have ability to move, and I have (hurricane)

Those plastic spacers are like $2/ea. You can get a square foot of penny tiles on a mosaic sheet for $8 and you get like 50.

Gorilla glue is a polyurethane glue. It requires moisture to cure, so it should work ok on a damp pot. I haven't used it. I use a masonry liquid nails or locktight type poly adhesive. It works ok. After some years, they release but I'm not too serious about surface prep for this use.

@Nil13 I guess the problem was that I am not familiar with penny tiles. If I buy a small tile product that has many tiles mounted on a mesh "tile sheet" does that mean I can peel off each tile easily? I was imagining that the tiles were permanently fixed to that sheet and installed that way. My bad.

Can you find pot feet in the U.S?

Yeah, they aren't as stuck on to that mosaic mesh as you might think. It's the mortar that ultimately holds everything in place. If pieces stick it just makes the glue stick better.

westes

you could peel any small tile pieces from the mesh backing, or cut them in case they don't. And why not to look for any leftovers/odds & ends in the store. They are much less $. I buy things like that from reStore (they sell donations - new and used and so on, for very little $, and profits go to Habitat for Humanity). You be surprised gems you could find there...) You could use small squares too, or any shape - doesn't have to be exact rounds.

@floral_uk, pot feet certainly work, but you have to carefully arrange many of them around such a heavy pot. The first time I need to tilt that pot to look under it, everything will come out and you have to rearrange them again. The appeal of a permanent installation under the pot is that you can change pots and change position slightly and not have to fuss with spacers.

Using the right glue - http://www.thistothat.com/

@chickadee2 Okay, but neither the "this" nor the "that" pull-down menus include concrete?