This videos show a Trassig installer closing the granules as part of a poured in place sink hole that was repaired. If you would like to learn more about repairing poured surfaces sink holes (A more common problem than you might think) visit http://www.trassig.com Did you know that PIP repair services are some of the most wanted techs out there. If you would like to join our online classes call 203-659-0456