The Houston Vibrator Model ICF vibrator is a hand-held external vibration tool for use on insulated concrete forms (ICF). The ICF vibrator assembly consists of a single phase 115 volt electric vibrator mounted on an aluminum board with handles for easy handling.  After concrete is poured in the form, the tool is applied to the outside of the insulated concrete form, starting at the bottom of the form and working upward. From the outside, the tool vibrates the concrete inside the form, allowing air to float up and out of the concrete, creating a consolidated, compacted structure.  Best of all, using the ICF vibrator prevents damage and loss of internal vibrators, which can create significant cost savings for the user.