Measure and MendStart measuring

Home safety

Flood cleanup plan

A room-area total helps organize labor and equipment, but it cannot declare a flooded building safe. Health Canada specifically advises drying within 48 hours where safe and says fuel-burning equipment must stay outdoors; EPA likewise centers health and indoor-air protection.

First answer

Before cleanup, screen electrical, structural, sewage, chemical, and combustion hazards; then inventory affected materials and begin safe drying promptly under current EPA or Health Canada guidance.

Formula or decision rule

affected floor area = sum of safe-to-measure room zones; material inventory = count or area by wet material and contamination class
  • Time since wetting is recorded as observed elapsed time, not used to predict safety.
  • Porous and non-porous materials stay separate in the inventory.
  • Safety-screen failures override area and schedule calculations.

Flood triage worksheet

Flood triage worksheet
CheckRecordStop/escalate when
Electrical supplyservice status and standing watershock risk or uncertain isolation
Water sourceclean, sewage, chemical, unknowncontaminated or unknown
Structuremovement, sagging, damagestability uncertain
Dryingwet materials and elapsed timecapacity or access is inadequate

Work through the project

  1. Establish safe entry

    Resolve electrical, structural, contamination, gas, and carbon-monoxide risks before measuring or removing material.

  2. Inventory by room and material

    Record affected area, depth or extent, porous contents, wall assemblies, flooring, and HVAC involvement.

  3. Dry and reassess

    Follow the jurisdiction guide, keep combustion equipment outdoors, and reassess for mould or concealed moisture.

Safety and scope

  • Never run generators, pressure washers, or other fuel-burning equipment indoors or near openings.
  • Standing water near electrical sources, sewage, chemicals, structural damage, or extensive mould requires qualified response.

Sources and scope

Source links reviewed July 16, 2026. A review date is not the document's publication date.

  1. U.S. Environmental Protection Agency: Flood Cleanup to Protect Indoor Air and Your HealthUnited States · government guide

    Electrical, structural, sewage, chemical, and extensive mold hazards require qualified help.

  2. Health Canada: Flood cleanup — Keep in mind indoor air qualityCanada · government guide

    The guide says bleach is not necessary for mould cleanup and combustion equipment must remain outdoors.

  3. U.S. Environmental Protection Agency: Mold Cleanup in Your HomeUnited States · government guide

    EPA uses an area of about 10 square feet as a decision point while also identifying other reasons to seek professional help.

  4. Health Canada: Addressing moisture and mould in your homeCanada · government guide

    The moisture source must be corrected; large or recurring growth calls for professional assessment.