You will need a piece of wall board, a wall board saw, 2×4 to fit between studs, wall board screws, 3 inch screws to attach 2×4 to existing studs, joint compound, self sticking mesh joint tape, 4 inch and 12 inch putty knives (may be called something else. I call them that). You will have to remove that piece of molding. You will need a small crow bar to carefully remove it and finishing nails to attach it after patch is finished. Sandpaper. And paint.
It's relatively easy if you have done it before and have the tools. You don't have a good timeline. Must use at least two layers of compound and must wait for each to dry before proceeding.
In other words, call someone who can do the job, or just get ready to tell the owners what happened. I honestly don't see them being concerned about anything but HOW YOU ARE DOING. They might have a slight thought that your health could mean bare stair treads are their responsibility whether you are doing them a favor or are an employee.
You will need a piece of wall board, a wall board saw, 2×4 to fit between studs, wall board screws, 3 inch screws to attach 2×4 to existing studs, joint compound, self sticking mesh joint tape, 4 inch and 12 inch putty knives (may be called something else. I call them that). You will have to remove that piece of molding. You will need a small crow bar to carefully remove it and finishing nails to attach it after patch is finished. Sandpaper. And paint.
It's relatively easy if you have done it before and have the tools. You don't have a good timeline. Must use at least two layers of compound and must wait for each to dry before proceeding.
In other words, call someone who can do the job, or just get ready to tell the owners what happened. I honestly don't see them being concerned about anything but HOW YOU ARE DOING. They might have a slight thought that your health could mean bare stair treads are their responsibility whether you are doing them a favor or are an employee.