material or bladder 26 in the manhole and then expanding it radially outwardly toward the manhole wall it may also be inverted into the manhole this is illustrated in fig1 wherein an inverter 72 is self contained within an above ground inverter 74 and a bladder 82 is within the above ground inverter 74 and is reversed with its outside presented inwardly and its inside presented outwardly a plug 76 is inserted within and attached to the above ground inverter 74 the plug 76 contains a fluid introducer 78 and a pull rope 90 having a lower end 92 and an upper end 94 the upper end 94 extends through a hole in the plug 76 fluid introducer 78 may be used to introduce steam or another heated fluid where thermoset resins are used in such an application the use of a heated fluid will permit or encourage curing and or hardening of the thermoset resin alternatively a separate inlet or port may be integrated into the plug 76 to accommodate the use of a heated fluid a rigid ring 80 is placed within the casting frame 20 and an upper end 84 of the bladder 82 is attached to the rigid ring 80 a.