Mold Remediation for Ceilings

The remediation process

1. Assessment of the moisture source and the extent of growth, including above the ceiling.
2. Containment with plastic sheeting; negative air pressure with HEPA filtration for larger jobs.
3. Removal of moldy porous materials (drywall, insulation), bagged inside containment.
4. HEPA vacuuming and cleaning of framing and surfaces.
5. Drying of remaining materials to normal levels.
6. Verification by visual inspection and, where appropriate, independent testing, before the ceiling is rebuilt.

When a professional is warranted

Smaller surface growth on hard surfaces is covered in mold on a water-damaged ceiling.

• Growth over about 10 square feet.
• Mold inside the ceiling cavity or attic.
• Water damage from sewage or other contaminated water.
• Mold in or near HVAC equipment or ducts.
• Household members with asthma, allergies or immune concerns.

What remediation does not include

Remediation removes and cleans mold-affected materials. It does not repair the leak that caused it, and it usually does not include rebuilding the ceiling. Plan for three separate pieces of work: the trade that stops the water, the remediation itself, and the drywall rebuild. Some companies coordinate all three; others handle only the middle step.

Avoid companies that propose spraying or fogging a product over mold-damaged drywall as the main treatment. Coatings and fogging do not remove growth from porous materials, and moldy drywall still needs removal.