Black mold removal San Marcos TX done right the first time
When you need black mold removal San Marcos TX homeowners can trust, we test first, contain the area, and remove the growth instead of painting over it. Our team handles toxic black mold remediation in San Marcos for attics, crawl spaces, and walls soaked by leaks or flooding. If you have seen dark staining or smelled that musty odor, call us before it spreads.
Service overview
What black mold removal San Marcos TX really involves
Black mold removal San Marcos TX is the process of finding active mold growth, sealing off the affected area, physically removing contaminated materials, and drying the structure so it cannot return. We do not fog a wall and call it done. Our technicians use moisture meters and thermal imaging cameras to trace the water source, then remove moldy drywall, insulation, and subfloor before treating the framing with an antimicrobial sprayer. Every job follows the ANSI/IICRC S520 Standard for Mold Remediation. Most calls we get in San Marcos start with a leak that was never fully dried. A burst supply line, a roof leak around failed flashing, or an AC condensate pan overflow leaves hidden moisture inside the wall. Within 24 to 48 hours, that moisture feeds mold. If you search for black mold removal near me after spotting staining on a ceiling, the real fix is removing the water source and the mold together. We handle both.
! Common warning signs
Musty odor in a bedroom or hallway
A persistent musty smell usually means active mold inside a wall, under carpet, or in the HVAC system. Ignoring it lets growth spread through the cavity and into adjacent rooms.
Dark staining on ceilings or around windows
Ceiling and window stains point to a roof leak, failed flashing, or condensation problem that has been feeding mold for weeks. The stain is the visible part; the growth behind it is usually larger.
Mold after a slab leak or slow appliance leak
Slab leaks and refrigerator ice maker line leaks stay hidden for months. By the time you notice warped flooring or a soft spot, mold has often spread under the floor across a wide area.
Scope of work
What our black mold removal service includes
Every mold job we run includes the full sequence from inspection through clearance. Here is what is covered in a standard scope, and what we handle as an add-on when the situation calls for it.
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01
Inspection and moisture mapping
We use moisture meters, thermal imaging, and a borescope camera to find every wet area, including inside wall cavities and under floors. You get a written scope with photos and affected square footage before any work begins.
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02
Containment and air scrubbing
ZipWall plastic seals the work zone, and HEPA air scrubbers with negative air machines keep spores from spreading. We run this setup on every job, including small bathroom and closet scopes, because spores travel farther than most people expect.
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03
Removal and antimicrobial treatment
Contaminated drywall, insulation, carpet, and subfloor come out and get bagged for disposal. We scrape and treat exposed framing with antimicrobial and biocide solutions so the cavity is clean before it gets closed back up.
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04
Drying and clearance testing
LGR dehumidifiers and air movers dry the structure to below 16 percent moisture content. We then take post-remediation air and surface samples and review the lab results with you before reconstruction starts.
Why homeowners call us for mold cleanup
Mold does not stop at the surface. It spreads through drywall, insulation, and framing until the whole cavity is contaminated. Here is what you get when you call us instead of a general handyman.
Book an assessmentTools and methods we use
Thermal imaging camera
Infrared scanning shows temperature differences that reveal hidden moisture behind walls, under floors, and above ceilings without cutting into the structure.
HEPA air scrubber and negative air machine
These units filter airborne spores and keep the containment zone under negative pressure so mold does not spread to clean areas of the home.
LGR dehumidifier and axial air mover
We use Dri-Eaz and Phoenix Restoration Equipment units to pull moisture out of framing and subfloor until readings drop below 16 percent.
Borescope inspection camera
A borescope lets us look inside wall cavities and under cabinets to confirm mold growth and moisture without tearing out more material than necessary.
Local execution
San Marcos sits in a humid corridor between the Hill Country and the coastal plain, and that matters for mold. Summer humidity regularly pushes indoor moisture above 60 percent when AC systems cycle off, and spring storms drive water into roofs and windows across Hays County. Older homes near Dunbar, Millview, and Downtown often have original plumbing and minimal vapor barriers, so slow leaks go unnoticed for months. Newer builds in La Cima and TRACE are tighter, which means a small leak can raise indoor humidity fast with nowhere for the moisture to escape. We adjust our drying plan to the building, not a generic formula. For toxic black mold remediation near me San Marcos calls, we test first, contain, and dry to below 16 percent moisture content before we close anything up. If you need black mold removal in San Marcos TX after water damage, we handle the water source and the mold in one scope so it does not come back.
How black mold removal runs in San Marcos
- • Downtown San Marcos
- • Blanco Vista
- • Millview
- • La Cima
Before & after
Same-day mold response across San Marcos
When mold emergencies happen, we answer
Mold does not wait for a convenient time, so we keep crews on call seven days a week for emergency black mold removal San Marcos TX calls. Most jobs in the 78666, 78656, and 78667 ZIP codes get an on-site assessment within two to four hours of your call. Our trucks carry HEPA air scrubbers, negative air machines, LGR dehumidifiers, and containment materials so we can start work the same day instead of scheduling a return visit. A typical crew is two to three technicians, and we can scale up for larger commercial or multi-unit jobs. If you are dealing with a burst pipe, storm intrusion, or a smell that will not go away, call us and we will tell you honestly whether you need immediate service or a scheduled inspection.
How our mold removal process works
Inspection and testing
We walk the property with moisture meters, a borescope inspection camera, and thermal imaging to map where moisture sits. Air and surface samples go to a lab when we need to confirm species or spore counts. You get a written scope with affected areas and a price before work starts. Most inspections take 45 to 90 minutes.
Containment setup
We seal doorways and vents with ZipWall plastic and set up negative air machines with HEPA filters. This keeps the work zone under negative pressure so spores cannot drift into clean rooms. Setup usually takes one to two hours depending on the size of the affected area.
Removal and disposal
Contaminated drywall, insulation, carpet, and subfloor get cut out and bagged for disposal. We scrape and wire-brush framing where surface mold has taken hold, then apply antimicrobial sprayer treatment to every exposed surface. A typical bedroom wall takes one day; a full attic can take two to three.
Frequently asked questions
How much does black mold removal cost in San Marcos TX?
Most residential jobs run $1,200 to $6,500 in 2026, depending on how much material has to come out. A single bathroom or closet with limited growth often lands near the low end, while attic or crawl space jobs with wide contamination run higher. Testing, containment, removal, and drying are all part of the scope we quote.
Is black mold dangerous to my family?
Yes, exposure can trigger coughing, headaches, sinus irritation, and asthma flare-ups, especially in kids, older adults, and anyone with allergies. The risk goes up when mold grows inside HVAC systems or in bedrooms where you spend hours breathing the air. Removing the growth and fixing the moisture source is the only reliable way to stop exposure.
Does insurance cover black mold removal?
It often does when the mold traces back to a covered event like a burst pipe, appliance failure, or storm intrusion. Long-term neglect or slow leaks are usually excluded. We document moisture readings, photos, and affected square footage in Xactimate format so your adjuster has what they need to process the claim.
Can I remove black mold myself?
You can wipe small surface spots on tile or glass, but anything larger than about 10 square feet is a job for a licensed remediator. Disturbing mold without containment spreads spores through the house, and porous materials like drywall and insulation cannot be cleaned once growth penetrates them. Improper DIY removal often costs more to fix than the original problem.
Related services
Water Damage Restoration
Mold almost always follows a water event. We dry the structure and remove mold in one coordinated scope so the moisture problem and the growth it caused get handled together.
Emergency Water Removal
Fast extraction within the first 24 hours is the best mold prevention there is. We pull standing water, then dry the space before spores have a chance to colonize.
Get black mold removal San Marcos TX homeowners trust
We test, contain, remove, and document every mold job so it stays fixed. Call San Marcos Water Restoration Pros at 512-325-0105 for a same-day assessment, or book online and we will confirm your window within the hour.