Does concrete form stay corrosion lead to cracked concrete foundations?
I was told by someone familiar with Massachusetts building code (I’m in VT) that my 10 inch thick concrete foundation walls with steel form stays not broken off and covered with hydraulic cement) were going to eventually corrode. That corrosion means to expand, and will crack the foundation.
Is that inevitable? I haven’t seen a lot of cracks in my foundation (5 years in), but have seen plenty in similar construction. I also haven’t seen a lot of water coming into my basement, but I am finding the interior basement wall has a lot of moisture at the base which could be from condensation due to convection loop (concrete, ~3/4″ air gap, 2×4 studs with fiberglass / vapor barrier, drywall).
Is it worth digging up the foundation and treating these stays, along with improvements to damp proofing (tar)? Is it worthwhile to insulate exterior of foundation?
I’m tearing out the interior wall and was planning to use 2″ iso foam, but am I just going to see water entry in a decade or so from cracks behind the wall?
What’s cost effective and worth doing as a stomp out a mold fiesta in my semi-finished basement?
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