Mold decision guides

Three decisions dominate this category. First, DIY or pro — answered by area, location, and water type. Second, do you pay for testing — usually no before the work when mold is visible, usually yes for independent clearance after. Third, do you file an insurance claim — which depends on whether the water event was sudden and covered.

On insurance, the Insurance Information Institute's position is that standard homeowners policies treat mold as a maintenance issue and generally do not cover it, with the important exception that mold resulting directly from a covered peril such as a burst pipe may be covered. Federal flood insurance may cover mold only when it is directly attributable to a flood. Read your policy for a mold sublimit before you assume anything.

There is a fourth decision people rarely name: whether to slow down. Mold is one of the few home problems sold with urgency and fear. Unless there is standing water, you almost always have time to get three quotes and read your policy. The urgency is about drying the water, not about signing the contract.

How to choose

Area over about 10 sq ft → call a pro

This is the EPA's own dividing line for homeowner cleanup versus a contractor experienced in mold remediation.

HVAC involvement → call a pro

The EPA specifically advises against running a suspected-contaminated HVAC system and against DIY duct remediation.

Sewage or contaminated water → call a pro

Category of water matters more than square footage here. Do not DIY it.

Testing decision: after, not before

Skip pre-testing when mold is visible. Budget instead for independent post-remediation verification.

Insurance decision: read the sublimit

Many policies cap mold coverage at a fixed dollar amount even when the underlying peril is covered.