Silicone Base Waterproofing Sealant

I was able to buy at a very low price some high quality silicone rubber based sealant for waterproofing wood, tile, concrete, stucco, stone etc and was wondering which of these applications would be best to this type of sealant on? The composition is 8% Silicone Rubber.

1) A resurfacing of a small concrete pond.
2) Sealing new saltillo tile.
3) Waterproofing stucco around a BBQ grill area that bubbles after rain.
4) Waterproofing a fiberglass door to use in a high salt and humidity coastal environment.

The person I purchased it from used it to waterproof flagstone. The sealed containers were made a few months ago and have a one year shelf life.