Just picked up a jug(4 litre) of PTS+ by DYNACRETE, a firm on Vancouver Island.I called their tech support line and talked up what I'm trying to do -seal and waterproof my fountains.He says this stuff should do the trick,or,use their PIM type 2,as a first coat,then move on to this PTS acouple of days later.He also said you should be able to apply it over painted surfaces,as well.

The reasons that I got onto this product are:

It's clear

It cleans up with water

There's no toxicity

Environmentally friendly

Available locally

One coat does it

You can check out their web www.dynacrete.com

cheers from here