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Rant: I wasted $150 on fancy form release oil that hurt my slab
Last fall I decided to try some high-end soybean-based form release oil. Paid about $150 for a 5 gallon bucket from a specialty supplier. First pour with it looked fine but then the next day I saw these weird blotchy spots all over the surface. Turns out it was reacting with the concrete mix and causing discoloration. Had to grind down the whole driveway and redo it, which cost me like two extra days and a bunch of lost time. The regular cheap stuff from the hardware store never gave me any trouble before. Has anyone else tried these fancy alternatives and had them backfire?
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