Well just keep trying different options to see what works best as condensation is just moister trying to escape when you see a kettle boiling and the steam dissapeares but it doesn't it finds a cold stop and turn back to moisterall the best Norman
I've seen these or might have done one they have been allowed
to sit on a stainless steel leg about an inch or two off the slab this just looks like a feature this obviously stops the moister rising up the end grain from the slab
The problem it's not summer it's as damp out side as inside your home so opening windows or vents won't help much I suggest hiring a good humidifier for a week to pull any moister out of your home if this improves you should look at buying one regards Norman