Short answer: bleach can remove surface stains on hard, non-porous materials like tile, but it is not a reliable way to get rid of a mold problem. Mold on drywall, wood, and carpet grows below the surface, and the real fix is to stop the moisture and remove what cannot be cleaned.
Why does bleach often fail on mold?
Mold grows into porous materials such as drywall, ceiling tile, wood, and insulation. Bleach mostly stays on the surface, so a wall can look clean while the mold underneath keeps growing. If the moisture source is still there, the mold comes back, often within weeks.
When is it okay to clean mold yourself?
Public health guidance from the CDC says that if you clean mold with bleach, use no more than 1 cup of bleach in 1 gallon of water. Never mix bleach with ammonia or other household cleaners, because that creates toxic fumes. Open windows and doors, and wear non-porous gloves and protective eyewear. Small patches on hard surfaces are the realistic DIY case.
What is the 10 square foot rule?
The EPA and CDC guidance points homeowners to professional-level remediation guidance when the affected area is larger than about 10 square feet, roughly a 3 foot by 3 foot patch. Larger areas, repeated mold, or any mold after a water loss should be assessed by a professional.
What should you do first after a leak or flood?
CDC guidance says to clean up and dry out the building quickly, within 24 to 48 hours. Porous items that have been wet for more than 48 hours and cannot be thoroughly cleaned and dried, such as carpeting, drywall, and upholstery, generally need to be removed. This is why fast response matters in Oklahoma, where humidity and storm flooding can speed things up.
When should you call a professional mold remediation company in OKC?
- The moldy area is bigger than about 10 square feet.
- Mold came back after you cleaned it.
- The mold is in walls, ceilings, HVAC, or crawlspaces.
- You smell mold but cannot see it.
- The mold followed a pipe burst, sewage backup, or storm flooding.
- Someone in the home has asthma, allergies, or a weakened immune system.
ASAP Pro Services provides mold inspection and mold remediation across the OKC metro, with a 15 minute call-back, and can bill your insurance directly when the loss is covered. Call (405) 992-4111.
Does bleach kill mold on drywall?
Bleach does not reliably kill mold that has grown into porous materials like drywall. Moldy drywall usually needs to be removed and replaced after the moisture source is fixed.
Is vinegar better than bleach for mold?
Neither is a substitute for fixing moisture and removing contaminated porous materials. For anything beyond a small hard-surface patch, call a qualified mold professional.
Is it safe to mix bleach with other cleaners?
No. Never mix bleach with ammonia or other household cleaners, because it produces toxic fumes.
For the restoration work discussed here, see water damage restoration, storm damage repair, commercial restoration.