I need to finish the exterior of the house. The fires, this year, are also motivating me.

The exterior is bare wood siding. The original owners probably used something like Penofin but it was many years ago, so I doubt their is any oil residue.

Fire Stop II came recommended.
http://www.flamestop.com/html/fr_ii.html

Flame Seal looks interesting.
http://www.logfinish.com/store/flamesealwoodseal.php

Pros, cons, suggestions?