If you found dark mold growth in a wall cavity, bathroom, attic, or around an HVAC register, slow down and treat it like a moisture problem first.
Nobody waits around once they see dark mold on drywall, under a sink, or around a vent. The worry is real, but panic usually leads to bad decisions like tearing into walls, spraying random chemicals, or blowing contaminated air through the house.
What matters first is where the moisture is coming from and how far the affected area goes. A dark patch around a return grille can point to condensation or duct issues. Growth in a bathroom wall can mean a hidden plumbing leak. Visible staining in an attic can mean roof failure or bad ventilation.
Do not scrape it dry. Do not point house fans at it. Do not tear out a moldy section without containment if the area is larger than a small surface spot. Once material is disturbed, the cleanup gets harder and the repair bill often gets worse.
A careful response means documenting the area, limiting spread, and using the right remediation process for the size and location of the problem. If Texas rules require separate assessment or clearance, that needs to be handled the right way.



Yes. Texas regulates mold assessment and remediation. Lone Star Pro Services lists Texas Mold Remediation License RCO1401.
On regulated mold projects, Texas rules may require an independent licensed mold assessment consultant for assessment, protocol, or clearance. Remediation should be handled separately when the rules require it.
Do not tear into the area or blow fans across visible growth. If water is still leaking, stop it if you can do that safely, then call for guidance.
Call 346-258-7165.
Not always. The size of the area, the moisture source, and what material is affected matter more than the color alone.
No. Bleach does not solve the moisture source, and disturbing the area can make the cleanup harder.
Lone Star Pro Services lists Texas Mold Remediation License #RCO1401. On regulated jobs, assessment and clearance may need to be handled by an independent licensed mold assessment consultant. That separation protects the property owner and keeps the project clean.
Mold Remediation License: #RCO1401
IICRC Certified Firm: #226009
HVAC License: TACLA00106049E
Operator: Lone Star Pro Services, Houston TX
Call or send the form. If the area is wet, say what leaked and whether the smell is getting worse.