Concrete vibrators are necessary to consolidate ICF walls. Internal pencil vibrators work best. Rebar shakers that attach to steel also work well. External vibration is generally unacceptable for foam forms.
With the development of the patented "RubberHeadTM", Oztec has designed and produced a vibrator head that not only surpasses all the standards for protecting epoxy coated rebar, but is unequaled in consolidating concrete.