Class 1 Water Damage – Water losses that affect only part of a room or area, or losses with
lower
permeance/porosity materials (e.g., plywood, particle board, structural wood, VCT, concrete). Little
or
no wet carpet or padding is present. Minimum moisture is absorbed by materials, releasing moisture
slowly.
Class 2 Water Damage – Water losses that affect an entire room or carpet and cushion. Water
has
wicked
up walls 12″ – 24″. There is moisture remaining in structural materials (e.g., plywood,
particleboard,
structural wood, concrete).
Class 3 Water Damage – Water may have come from overhead. Ceilings, walls, insulation, carpet,
cushion
and sub-floor in the entire area are saturated.
Class 4 Water Damage – These consist of wet materials with very low permeance/porosity
(hardwood,
plaster, brick, concrete, stone, crawlspace). Typically, there are deep pockets of saturation, which
requires very low specific humidity. These types of losses may require longer drying times and
special
drying methods.