A mold remediation technician is the restoration crew member who removes mold contamination from buildings: building containment, working in respirators and protective gear, removing moldy porous materials, and cleaning what can be saved.
BLS places the work inside its hazardous materials removal workers group, which it describes as handling asbestos, lead and mold.
This guide covers the job, the PPE, state licensing and certification.
What is a mold remediation technician?
A mold remediation technician is the crew member who carries out mold cleanup inside a containment: removing contaminated materials and cleaning the surfaces that can be salvaged.
O*NET's sample job titles for the group include Mold Damage Technician, and this guide treats mold technician, mold remediation specialist, mold remediation worker and mold removal technician as the same role.
BLS folds the work into its hazardous materials removal workers occupation (SOC 47-4041).
The Occupational Outlook Handbook describes those workers as identifying and disposing of harmful substances such as asbestos, lead, mold and radioactive waste, and O*NET lists Mold Damage Technician among the group's reported job titles.
One of O*NET's listed tasks for the group is to “Clean mold-contaminated sites by removing damaged porous materials or thoroughly cleaning all contaminated nonporous materials” — the job in one line.
In 2025, BLS says, hazardous materials removal workers held about 52,700 jobs, with 62% of those workers in remediation and other waste management services, another 14% in waste treatment and disposal, and 5% in construction.
The IICRC's standard for professional mold remediation is ANSI/IICRC S520; the current edition is the Fourth Edition, 2024.
OSHA's mold page cites S520 and the water-damage standard S500 as consensus guidance from their originating organizations, and says plainly that these are not OSHA regulations.
On pay, the honest benchmark is the same proxy group: the May 2025 median wage for hazardous materials removal workers was $23.78 an hour, or $49,450 a year.
That is a stand-in for the broader hazmat group, not a pay figure for mold remediation technicians.
What does a mold tech do on a remediation job?
The shape of the day comes from the loss: a long-running roof leak in a ceiling cavity, a flooded crawlspace that was never dried, hidden growth behind a vanity.
The crew works the scope the job file sets, and the tech's hands-on part of it looks like this.
- Building containment before disturbed material goes airborne. EPA's remediation guide describes limited containment as polyethylene sheeting run floor to ceiling around the work area with a slit entry and covering flap, held under negative pressure by a HEPA-filtered fan unit. The guide generally recommends that tier for 10 to 100 square feet of mold, built from a single layer of 6-mil fire-retardant polyethylene.
- Full containment on bigger jobs: two layers of fire-retardant polyethylene, an airlock chamber large enough to hold a waste container and let a worker suit up and remove contaminated PPE, and a HEPA-filtered fan exhausting outside the building. That is the setup EPA describes above 100 square feet, or wherever the occupied space would otherwise be contaminated.
- Removing moldy porous materials and cleaning nonporous surfaces — O*NET's own task language for the work.
- Final-detail cleaning with HEPA vacuuming: EPA recommends HEPA vacuums for final cleanup after materials are thoroughly dried and contaminated materials are removed, with the vacuum contents bagged in well-sealed plastic.
- Bagging and staging debris. The 2008 New York City mold guidelines state there are no special disposal requirements for moldy materials beyond bagging them in sealed plastic.
Antimicrobial products are part of the toolkit but not the point: EPA does not recommend routine use of biocides such as chlorine bleach, because dead mold is still allergenic and the goal is to remove mold, not just kill it.
When a product is used, its EPA-registered label governs — every pesticide label carries the federal statement that using the product in a manner inconsistent with its labeling is a violation of federal law.
BLS adds a scheduling reality: most hazardous materials removal workers work full time, and overtime is common for some workers, especially those who respond to emergency and disaster scenarios — projects may require night and weekend work.
What PPE and health precautions does mold work require?
The respirator is the centerpiece.
EPA's remediation guide lays out three PPE tiers.
Minimum PPE is gloves, an N-95 respirator and goggles.
Limited PPE adds disposable overalls and an N-95 or half-face respirator with HEPA filters.
Full PPE is disposable full-body clothing, head gear and foot coverings with a full-face respirator with HEPA filter.
For large jobs with high airborne dust and spore levels, the same guide recommends stepping up to a full-face powered air-purifying respirator (PAPR).
The gear has a reputation for a reason.
BLS notes that some hazardous materials removal workers wear fully closed protective suits for several hours at a time, which can be hot and uncomfortable, and that extremely toxic cleanups call for respirators on top.
Containment is a health precaution as much as a work practice: EPA's setups run the work area under negative pressure precisely so the work does not contaminate the occupied space around it.
The filtration is built for that job — EPA points to the Department of Energy's definition of HEPA, a filter that can theoretically remove at least 99.97% of airborne particles 0.3 microns in size.
On the rules side, OSHA has no mold-specific standard.
Its mold page lists the general standards that apply to the work and points to IICRC S500 and S520 as consensus guidance, stating that they are not OSHA regulations.
What you wear on a specific job comes out of your employer's safety program and the site's own assessment — a guide like EPA's frames the tiers, it does not fit the respirator.
Verify before you wear it
Do you need a license to do mold remediation (state by state)?
Licensing is worth settling first, and the answer is genuinely local.
The IICRC tells mold businesses that licensing rules vary by county, city and state — and it does not claim its MRS certification is legally required to open a mold business.
States regulate the work in different ways.
Virginia Code § 59.1-200(A)(81), part of the state's Consumer Protection Act, bans selling residential mold remediation services without a mold remediation certification from a nationally or internationally recognized certifying body.
It also requires following EPA mold guidance, ANSI/IICRC S520 or an equivalent ANSI-accredited standard — and the statute does not name IICRC as the only certifier.
From October 1, 2026, Connecticut's Home Improvement Act covers water, fire or storm restoration and mold remediation on residential property (Public Act 26-100).
Connecticut issues a home improvement contractor certificate for mold remediation only with an attestation that the contractor is certified in mold remediation by the IICRC, NORMI or another organization the Department of Consumer Protection commissioner approves.
The department's mold page notes that commercial mold remediation is not covered by the Home Improvement Contractor registration.
Some states license the work outright, Texas and Florida among them.
Texas moved mold assessment and remediation licensing to the Texas Department of Licensing and Regulation on November 1, 2017; the program is governed by Texas Occupations Code Chapter 1958 and TDLR rules at 16 Texas Administrative Code Chapter 78.
Florida's Department of Business and Professional Regulation licenses mold assessors and mold remediators.
Alabama is one that stays out: the Alabama Department of Public Health said in an October 2026 news release that Alabama does not license mold remediation services or keep a list of approved remediators, and points the public to IICRC-certified professionals instead.
An absent state mold license is not the same as a rule-free job.
Contractor or home improvement licensing can still cover the work, and OSHA's workplace standards apply to employees.
EPA's remediation guide frames the professional practice even though the agency presents it as guidelines rather than a regulation — and EPA states there are no EPA regulations or standards for airborne mold concentrations.
Rules change — ask the state
Which certification do mold techs get (AMRT)?
The IICRC's certification built around mold remediation work is the Applied Microbial Remediation Technician (AMRT), which the IICRC describes as covering mold and sewage remediation techniques for people in property restoration and related professions.
The IICRC is a certification body, not a school: it owns no schools and has no instructors on staff, approving independent schools and instructors to teach the classes.
Becoming certified means attending an IICRC-approved course, passing the written exam and documenting the skills for the subject.
The AMRT has one prerequisite — the Water Restoration Technician (WRT) certification comes first — and IICRC's own comparison of its mold credentials describes the AMRT as a 4-day course with no experience prerequisite and a 75% passing score.
The syllabus covers mold and sewage remediation techniques.
IICRC notes the AMRT is not an accredited certification, unlike its experience-based Mold Remediation Specialist (MRS).
The MRS is the alternate route for experienced hands: no course at all, but applicants need at least one year of verifiable hands-on mold remediation field experience to qualify.
Two practical notes.
The AMRT is one of the IICRC certifications the IICRC lists as in-person only (its October 2026 list), so plan travel to a class — and check before you book, because the IICRC says its delivery options are subject to change.
And the money: IICRC exam fees are $80 for both the initial exam and each retest, with the AMRT (and inspection exams) at $150 (US pricing).
Keeping the credential active takes an annual renewal fee plus 14 CEC hours every four years — and the certification belongs to the technician, not the employer, so it moves with you if you change companies.
How do you become a mold remediation technician?
There is more than one door into mold work.
BLS's description of the occupation group maps the route — hazardous materials removal workers typically need a high school diploma and are trained on the job, with moderate-term on-the-job training.
Two checks before you plan the path.
BLS notes some states require workers to hold permits or licenses for each type of hazardous waste they remove, particularly asbestos and lead.
BLS also notes employers may require OSHA HAZWOPER training for hazmat removal workers, with refresher training that may be required periodically.
Finish high school or the equivalent
BLS says hazardous materials removal workers typically need a high school diploma; the trade itself trains the rest on the job.Get hired and learn the work on real jobs
BLS classifies the occupation's training as moderate-term on-the-job training — learned on jobs, not in a classroom.Add the safety training your employer requires
Per BLS, employers may require OSHA HAZWOPER training with periodic refreshers, and some states require permits or licenses per hazardous waste type, particularly asbestos and lead.Certify through the IICRC
The WRT comes first — IICRC lists it as a 3-day, 19-hour course, not counting exam time, lunch and breaks — then the AMRT, which IICRC describes as a 4-day course.Work under a lead and build the judgment
Containment size and PPE level are judgment calls that scale with the job: EPA's guide ties the containment tier to square footage and recommends a full-face PAPR on large jobs with high airborne dust and spore levels.
One caution as you order the steps: a certification is not a license.
An IICRC certificate says you passed a course and an exam.
Whether your state requires a license, a certification from a recognized body, or neither is the state's own rule — check it before you schedule classes.
Mold remediation tech vs mold inspector: who does what?
The technician removes the mold; the mold inspector evaluates the building and the contamination — New York's licensing law calls that side of the work mold assessment — and the professional standard names both sides.
ANSI/IICRC S520 lists both the indoor environmental professional and post-remediation verification among its components, alongside inspection and preliminary determination, remediator qualifications, and the structural, HVAC and contents remediation work itself.
The split shows up most clearly in sampling.
EPA's guide says that in most cases sampling is unnecessary when visible mold is present, and because no federal threshold limits exist for mold or spores, sampling cannot check compliance with federal mold standards.
When sampling is done, EPA says it should be done by professionals experienced in sampling protocols and interpretation, with analysis following AIHA, ACGIH or other professional methods.
New York draws a firm line: New York State law prohibits the same licensed worker from doing both the mold assessment and the remediation on a property.
New York City's health department adds that where mold to be fixed exceeds 10 sq ft in buildings with 10 or more apartments, owners must use New York State Department of Labor-licensed mold assessment and remediation workers.
The same threshold applies in buildings with 25,000 or more sq ft of non-residential floor area.
Other states draw their own boundaries, so whether one company can assess and remediate the same job is a question for that state's rule, not for a general guide.
What does not change is the technician's side of the line: the remediator carries out the remediation the scope sets, and the inspection and the post-remediation verification are listed as their own components in the standard.
Career information, not licensing, legal, insurance, health or safety advice — confirm licensing, certification and safety questions with the state agencies, OSHA, EPA and the IICRC as they apply to your situation.