Outside building protection

I was looking for a way to protect outside building and I found that thing. It's called liquid glass.

http://www.physorg.com/news184310039.html

and another article :

http://www.independent.co.uk/news/science/sprayon-miracle-could-revolutionise-manufacturing-1885158.html


It's not on sale yet, but soon in some UK store, that could be our best friend soon in the workshop.

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Sounds too good to be true. I'll bet it's expensive (after all, it's from Germany).