Around 1km of scaffolding was needed around the tower to carry out the repairs. It took 12 weeks alone to erect that.
Contractors are working from top to bottom removing pieces of concrete that were breaking off the structure and filling in cracks. They are then repainting around the repairs.
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Former Police Inspector Harry White told the inquests that he was told that fans entering the terraces should "find their own level."
A former police inspector has told the inquests he realised fans entering through an exit gate would head towards already crowded pens.
The man is thought to have tied himself to the bottom of the vehicle as it travelled from Calais to Kent.