Mold remediation San Marcos TX done right the first time
When moisture sits behind drywall or under a subfloor, mold can take hold in as little as 24 to 48 hours. Our mold remediation San Marcos TX crews find the source, contain the growth, and remove it to the ANSI/IICRC S520 standard. We handle mold removal in San Marcos for homeowners, landlords and property managers, then verify the air is clean before we close up your walls.
Service overview
What mold remediation San Marcos TX actually involves
Mold remediation San Marcos TX is the controlled removal of mold growth, contaminated building materials and the moisture that feeds it. We start with a moisture meter and thermal imaging camera to trace the water source, then build ZipWall containment around the affected area and run a negative air machine with HEPA filtration so spores do not spread to clean rooms. Contaminated drywall, fiberglass batt insulation and carpet pad come out, and we treat the framing with an antimicrobial sprayer before drying the cavity with an LGR dehumidifier and air movers. San Marcos sits in a humid corridor where crawl space standing water and elevated humidity are common, and one slow supply line leak behind a refrigerator can feed mold for weeks before you smell it. If you have had a burst pipe, a roof leak or storm intrusion, mold remediation after water damage in San Marcos TX should start as soon as the structure is dry enough to work. We test the air, document the scope in Xactimate for your insurance claim, and rebuild what we remove.
! Common warning signs
Musty odor in a closet or hallway with no visible growth
The smell usually means mold is growing inside the wall cavity or under the carpet, where you cannot see it. Ignoring it lets the growth spread into adjacent rooms and your HVAC returns.
Ceiling stain that keeps coming back after painting
A recurring stain means the roof leak or supply line above is still active, and mold is growing on the back of the drywall. Paint hides it for a few weeks, then the stain and smell return.
Crawl space with standing water and damp joists
Standing water under the house keeps relative humidity high year-round, which feeds mold on subfloor and framing. It also warps floors and rots joists over time.
Scope of work
What our mold remediation service includes
Every mold job includes inspection, containment, removal, treatment, drying and a clearance test. Rebuild work like drywall, insulation and paint is quoted separately once we know how much material has to come out, and we tell you that upfront.
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01
Moisture inspection and air testing
We use a moisture meter, thermal imaging camera and borescope inspection camera to map the growth, then take air samples for lab analysis. You get a written scope with photos and lab results before work begins.
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02
Containment and HEPA filtration
ZipWall containment plastic seals the work area, and a negative air machine with HEPA and carbon filters keeps spores out of clean rooms. We tape off HVAC vents and doorways so the rest of your home stays protected.
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03
Removal and antimicrobial treatment
Contaminated drywall, joint compound, insulation, carpet and pad are removed and bagged. We HEPA-vacuum the framing and apply an antimicrobial sprayer treatment such as Concrobium or Benefect to studs, sheathing and subfloor.
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04
Drying and clearance verification
LGR dehumidifiers and air movers dry the open cavity below 15 percent moisture content, checked daily with a pin meter. A post-remediation air sample confirms the space is clean, and you receive the clearance report.
Why homeowners call us for mold cleanup
Mold is a moisture problem first and a cleaning problem second. We fix the source, remove the growth, and prove the result with air testing so you are not guessing about what is behind your walls.
Schedule inspectionTools and methods we use
Thermal imaging camera
Finds hidden moisture behind drywall, under floors and in ceilings by reading temperature differences, so we open only the areas that are actually wet.
LGR dehumidifier
Pulls moisture out of the air in a contained space, drying wall cavities, subfloors and framing fast enough to stop mold from regrowing.
HEPA air scrubber and negative air machine
Filters airborne spores and keeps the contained work area under negative pressure so mold does not spread to clean rooms in your home.
Antimicrobial sprayer and thermal fogger
Applies Concrobium, Benefect or Sporicidin to framing, sheathing and subfloor, and fogs hard-to-reach cavities after removal.
Local execution
San Marcos sits between the Hill Country and the coastal plain, which means long humid summers, spring storms and flash flooding along the Blanco River Basin Corridor. That climate keeps crawl spaces damp and pushes indoor relative humidity above 60 percent for weeks at a time, which is exactly the range mold needs. Older pier-and-beam homes near Dunbar and Downtown hide moisture under the floor, while slab-on-grade builds in Blanco Vista and La Cima trap water against the slab after a supply line leak. We also see a lot of mold remediation after water damage in San Marcos TX from AC condensate pan overflow and roof flashing failures, because both drip slowly and stay hidden. If you are searching 24/7 emergency mold removal San Marcos TX, we answer the phone around the clock and can usually be on site within 60 to 90 minutes. We work to the ANSI/IICRC S520 standard, document the scope in Xactimate for your carrier, and test the air before and after so you have proof the job is done.
How mold remediation runs in San Marcos
- • Downtown San Marcos
- • Blanco Vista
- • Kissing Tree
- • Campus Fringe
Before & after
Available 24/7 for mold emergencies in San Marcos
When water sits, we answer the phone
Mold does not wait for business hours, so neither do we. Our phone line is answered 24/7, and for active leaks or visible growth in San Marcos we can usually have a crew on site within 60 to 90 minutes. A typical response truck carries a moisture meter, thermal imaging camera, borescope inspection camera, HEPA air scrubber, negative air machine, LGR dehumidifier and air movers, so we can start containment and drying on the first visit instead of scheduling a second trip. Most residential jobs use a two- to three-person crew, and larger commercial losses get additional technicians and equipment from our warehouse. If you need mold removal in San Marcos TX after a burst pipe, appliance leak or storm, call 512-325-0105 and we will get containment up the same day.
How our mold remediation process works
Inspection and testing
We walk the house with a moisture meter, thermal imaging camera and borescope inspection camera to find hidden growth inside walls and under floors. Air samples go to the lab, and you get a written scope with photos, usually within 24 hours of the visit.
Containment setup
We build ZipWall containment around the affected rooms and run a negative air machine with HEPA filtration. Air movers and a hydroxyl generator may run in unoccupied spaces. Setup takes two to four hours on a typical 200 to 400 square foot area.
Removal and treatment
Contaminated drywall, joint compound, insulation and carpet pad come out and get bagged. We HEPA-vacuum the framing, then apply an antimicrobial sprayer treatment such as Concrobium or Benefect to the studs, sheathing and subfloor.
Frequently asked questions
How much does mold remediation cost in San Marcos TX?
Most residential jobs run $1,500 to $6,500 in 2026, with small contained areas starting near $900 and whole-room rebuilds going higher. Price depends on square footage, how deep the growth reaches, whether insulation and drywall must come out, and whether air testing is included. We give you a written scope before work starts.
Does insurance cover mold remediation?
Yes, in many cases, when the mold came from a covered event like a burst pipe, appliance leak or storm intrusion. Sudden and accidental water damage is usually covered; long-term neglect and flooding typically are not. We document the loss in Xactimate and work directly with your adjuster to support the claim.
How long does mold remediation take?
A contained bathroom or closet usually takes two to four days. A larger area with wall cavities, insulation and flooring runs five to ten working days, including drying and the clearance air test. Rebuild work like drywall and paint adds a few more days depending on material availability.
Is mold remediation safe for my family?
Yes, when containment and negative air pressure are used correctly. We seal the work area with ZipWall plastic, run HEPA air scrubbers, and keep spores from reaching living spaces. Children, pets and anyone with allergies should stay out of the contained area while we work, and it is safe to return once clearance testing passes.
Related services
Water Damage Restoration
Mold almost always follows a water loss. We dry the structure, remove damaged materials and restore the room, then remediate any growth the leak left behind in San Marcos homes.
Emergency Water Removal
Standing water feeds mold within 24 to 48 hours. Our emergency water removal crews extract the water fast, which cuts the odds you need full mold remediation San Marcos TX work later.
Get mold remediation San Marcos TX started today
Mold spreads while you wait. Call 512-325-0105 and we will schedule an inspection, test the air, and give you a written scope with pricing. Licensed, insured, and local to Hays County.