Do not disturb it
Scrubbing or tearing out moldy materials spreads spores. Leave larger areas to professionals.
Visible mold, a musty smell or mold after a leak?
Mold grows where moisture stays. Remediation removes the mold safely and fixes the moisture that caused it. Do not disturb large areas yourself; call 833-877-1717. RepairNowUSA connects the request. An independent remediation company does the work.
Am I in the right place?Yes for visible mold, a persistent musty odor, or mold after a leak, flood or high humidity.
Is this urgent?More urgent with large areas, mold in HVAC systems, or people with asthma, allergies or weakened immune systems in the building.
What do I do next?Keep the area closed off, fix any active leak, and call 833-877-1717.
Still wet from a leak: structural drying. Business properties: commercial mold remediation.
RepairNowUSA editorial review · Last substantively reviewed October 14, 2026 · Review standards
What to do now
Fix the moisture
Stop leaks and lower humidity. Mold returns if the moisture stays.
Close the area off
Keep doors shut and limit time in the room, especially for sensitive people.
Health and safety
Mold can cause allergic reactions and breathing problems, especially for people with asthma or weakened immune systems. U.S. EPA guidance suggests professional help for areas larger than about 10 square feet or mold in HVAC systems.
Where mold usually grows
After leaks and floods
Behind drywall, under flooring and in cabinets.
Bathrooms and kitchens
Poor ventilation and repeated moisture.
Attics and crawl spaces
Roof leaks, poor venting or groundwater.
HVAC systems
Ducts and drain pans with condensation.
What to have ready when you call
- Property ZIP code, home or business
- Where the mold is and roughly how large
- Any leak or flood that caused it
- Whether the moisture source is fixed
- Any sensitive occupants
- Whether the HVAC system is involved
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles mold remediation in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Mold remediation questions
Can I clean mold myself?
Small areas on hard surfaces can often be cleaned by owners following EPA guidance. Larger areas, hidden mold or mold in HVAC systems should be handled by professionals.
How fast does mold grow after a leak?
It can start within 24 to 48 hours on wet materials.
Do I need mold testing before remediation?
Not usually when mold is visible. EPA says sampling is usually unnecessary if you can see mold growth. Testing can help when mold is hidden or to confirm cleanup worked.
What size of mold problem needs a professional?
EPA advises using its larger-remediation guidance and an experienced contractor when mold covers more than about 10 square feet, or after significant water damage.
Can I call about mold at night?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Will remediation stop the mold from coming back?
Only if the moisture problem is fixed too. The remediation provider should identify the moisture source.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.