200+ years of foot traffic up and down the spiral staircase had loosened everything, making the staircase “springy” which in turn cracked and loosened the plaster. Restoration carpenters removed all the plaster and plaster lath, reinforced the underside of each step from the 1st-floor entry to the 3rd-floor attic, and inspected and tightened up any questionable components. Plaster walls were repaired, new plaster applied to the underside of the staircase, and original paint colors applied throughout.
