I have a very new composite deck but now I realized I also want a
The entire deck area 1000 sq. ft. with Grace ice and water shield and then resurface the deck with Quick Cap composite decking. Saw a demo of gorilla at a Contractor's day at a building supply place, where they laid out a sample run of maybe 10 feet - even without any end joints (can't see how they handle them without leaks) it leaked in the demo, and the material was already getting a soft fuzzy surface after only an hour or so of demonstration. Here is a blog that