Trenchless Innovations is performing their Trenchless casting method of repair on extremely deteriorated under slab air ducts. This method of repair will spin cast a new concrete pipe inside the old deteriorated pipe to restore the structural integrity of the pipe. Once this is done the ducts will then be spray lined with Duct Armor duct lining material. All this will be done with no destruction to the slab floor or loss of service to the homeowner.