What materials are used for plugging tie holes?
Portland cement mortar or epoxy mortar can be used or the holes can be filled with plastic plugs or lead plugs. Mortar materials are less likely to smear if they are made to a dry consistency and tamped into the hole. When portland cement mortar is used the interior of the hole should be pre-wet with clean water and brushed with a cement slurry before the mortar is put in place. Epoxy mortar should be applied according to the manufacturer's instructions. This operation is usually done with a caulking gun.