Filling Gap Between Wall Sheathing and Concrete Foundation Before Liquid Flashing
See attached sketch for clarity.
I’ve got zip-r. I plan on liquid flashing the zip to my concrete basement wall. The way things have worked out in the field the zip-r often sits up to 1/2″ above the concrete. I don’t want to try and bridge that gap with the liquid flash, I want to fill it to a reasonable depth first. The joint is a bit deep (1.5″) to fill.
– Put 2 layers of 5/8 backer rod in there
– 2 layers of 5/8 backer rod plus a bead of polyu caulk to help hold it in place and form a better profile for the liquid flash to ride on
– Canned spray foam to fill the gap and liquid flash over that.
Any better ideas or opinion on the above?
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