Concrete Countertop Undermount Sink Form - Cast-In-Place - Z Counterform
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Concrete Countertop Undermount Sink Form - Cast-In-Place - Z Counterform
To use, adhere the sink form to the inside of an undercount sink (vertical walled sinks only). Keep the sink form at the proper elevation so that it is the same height as the rest of your countertop forms. A small smooth bead of silicone caulking should be used to seal the gap where the sink form meets the sink. This will also help give you a nice rounded reveal without any brittle edges. On sinks with tight radius corners, the sink form can be warmed with a heat gun in order to make the plastic more pliable. If the sink has square corners, the form may need to be cut into 4 separate pieces. For double bowl sinks, the sink form can be notched to span the divider.