Is it always necessary to plug tie holes or treat the tie ends? We would like to find some system or method that avoids these operations.
It is normally necessary to plug tie holes in order to prevent corrosion and possible staining. After plastic-coated snap ties have been broken back the newly exposed ends should be treated to prevent exposure to moisture and consequent staining of concrete. One way to avoid such operations is to use stainless steel or other noncorroding form ties such as fiber-glass-reinforced plastic rods. Ends of metal ties should be at least 1 1/2 inch from the surface.