This is a strange question that has been preying on my mind for a few hours. I’ve just completed 30sqm of tumbled travertine. I sealed it today. I told the customer to try not to use the room for 24 hours. However, the other trades want to get access to the room to put up the skirting, coving, painting etc. They customer has suggested putting down black plastic sheeting, then those corrugated plastic sheets on top. The grout is still only 48 hours old and still curing. Do you think it’s ok to cover such a large area? Will it sweat and turn nasty?