So far Jef and I have gone through seven cans of Great Stuff Big Gap Filler, and I think we’ll need about four more. Off to Home Depot again. Home Depot and Harbor Freight are making big bucks off of me these days.
What’s really interesting about Great Stuff is that it keeps expanding long after you’ve stopped paying attention to it. I’ve already been warned not to overfill crevices. What they really mean is that one should consciously underfill crevices. Great Stuff, Jef and I learned today, expands in two stages: it expands rapidly after the initial squirt, and then it expands at a much slower (almost undetectable) rate for the next 15 minutes… while your back is turned. And then you turn back around to survey your work only to find that the foam you squirted 15 minutes ago is overflowing, dropping sticky little foam turds all over the place. A frenzy of catching overflowing foam before it touches something uncleanable ensues.
In my hurried frenzy, I grabbed anything I could to catch and wipe away any excess foam, and then threw it all in a heap. The photo above illustrates how sticky Great Stuff is. The only reason the rest of the trash didn’t stick to the mess I was holding is because it was stuck to the box.