Looking for some advice. I've built an Oak framed veranda over my patio. To glaze I'll need 5nr 4200x885mm glass panels. I was looking at using 6mm toughened glass. So a few things: The glass is supported along the length of each long side, not a cross the ends. Will 6mm be thick enough to stop it bowing too much? Each piece will be around 50kg. I was going to secure suction cups to a length of 4x2 to support each piece along its length, then lift onto the rafters with a genie lift, then manouvre each piece into place by sliding over the rafters/cap boards (can use ladders and scaffold to access) does this sound feasible? I'll put the expanding tape, lead flashing and cap boards on as I go from one end to the other one pane at a time. Any advice or suggestions based on your experience much appreciated.