Secondary damage is additional damage that develops as a consequence of an initial event or its continuing effects.
What this means at your property
A leak may first wet a floor and later affect adjoining materials as moisture remains or spreads. The later observation needs documentation; its timing alone does not prove the full cause or assign responsibility.
How should new findings change the project?
Record the location, discovery date and supporting observations. Ask the team to reassess the affected boundary and explain any revised drying, removal or repair work before incorporating it into the agreed scope.