| PL Concrete Crack & Masonry ... |
So this is PL "Concrete Crack and Masonry Sealant," and it has some interesting properties.
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One day when I found the tip of this mastic had dried, I grabbed the blob protruding from the tip with pliers and pulled. A rubbery string about a foot long pulled out of the tip, broke then recoiled into a perfectly molded model of the inside of the caulking tip. (The glue inside the tube was then available and usable.) |
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I like to pick it up off the shelf and show visitors the resiliency of this stuff. |
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Here's a close up of the plug after countless stretches and
rebounds. I think in the plastics industry this is called a "memory
effect."
This also shows that this stuff will eventually cure in a very air restricted condition and yield a surface mirroring what it was molded by. This implies that a kind of plastic "peel ply" might be applied to joints (if one had a way to keep it smooth and the patience to allow it to cure,) and a rather smooth surface might be produced with no sanding. |
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