Track A · ASD
Applied Structural Drying Certification
Go beyond water removal to master the drying science behind it — psychrometry, airflow design, and dehumidification strategy that brings structures to a documented dry standard, backed by a credential customers and insurers trust.
Get certified online — certificate the same day.
- Self-paced
- Instant certificate
- 2-year validity
- Format
- Online, self-paced
- Lessons
- 6 lessons
- Exam
- 10 questions
- Pass mark
- 75% · retries
- Certificate
- Same day
- Validity
- 2 years
Earning potential
How much can you earn?
Technician hourly
$20–35 / hr
Self-employed drying job
$2,000–6,000+
Owner potential
mid five-to-six figures
Illustrative ranges — actual earnings vary by location, effort, and experience, and are not guaranteed.
Why it pays
Why get certified?
Dry faster, cost less
Engineered airflow and dehumidification plans cut drying time, lowering equipment days and labor on every job.
Win insurance work
Carriers favor technicians who can defend a drying strategy with psychrometric data and daily moisture logs.
Justify premium pricing
A drying specialist credential separates you from extraction-only crews and supports higher per-job rates.
Reduce callbacks and claims
Drying to a verified dry standard prevents secondary damage and mold complaints that erode margins and reputation.
Grow into a specialist role
Structural drying expertise positions you to lead jobs, train crews, or take on complex large-loss work.
Curriculum
Inside the Applied Structural Drying course
6 self-paced lessons, then a 10-question exam — 75% to pass, unlimited retries.
- 1
Psychrometry: Reading the Air You're Trying to Dry
Drying is the controlled movement of water from wet materials into the air, then out of the structure. To control it you must read the air. Five readings matter. Dry-bulb temperature (Td) is plain air temperature. Relative humidity (RH) is the percent of moisture the air holds versus what it could hold at that temperature, but RH alone is misleading because warmer air holds far more water. Specific humidity, or grains per pound (GPP), measures the actual water in the air and is the number that tells you whether you are gaining or losing moisture. Dew point is the temperature at which air becomes saturated. Vapor pressure differential is the engine of drying: water leaves a wet material only when vapor pressure in the material is higher than in the surrounding air.
- 2
Airflow Design: Moving Evaporation Off the Surface
Evaporation stalls when a saturated boundary layer of air clings to a wet surface. Airflow's job is to strip that boundary layer away so fresh, drier air keeps the vapor-pressure gradient steep. The tool is the air mover (centrifugal or axial). Placement, not just quantity, determines results.
- 3
Dehumidifier Selection and Sizing
Air movers load the air with moisture; dehumidifiers take it out. Choose the right type for the conditions. Conventional (LGR, low-grain refrigerant) dehumidifiers excel in warm, humid conditions and can pull air down to very low grain depressions; performance falls as the air gets cold or already dry. Desiccant dehumidifiers use a moisture-absorbing wheel and keep working in cold or low-humidity environments, achieving deeper drying and lower dew points, which makes them strong for dense materials like hardwood and plaster. Conventional refrigerant units are the everyday workhorse but lose capacity below roughly 65 to 70 degrees F.
- 4
Monitoring to a Dry Standard
You do not stop drying on a schedule; you stop when materials reach the dry standard. The dry standard (also called the drying goal) is a defensible moisture level for each material, established by measuring an unaffected area of the same material in the same structure. That control reading becomes the target the affected material must reach, typically within a few moisture-content points.
- 5
Documentation, Decisions, and Defensibility
Applied structural drying is judged later by the paper trail, so documentation is part of the job, not an afterthought. On day one, record initial conditions: moisture map of affected materials, ambient psychrometric readings inside and outside, the category of water (1 clean, 2 grey, 3 black) and class of water, photos of the loss, and the equipment installed with its locations. Define the dry standard from the control readings and write it down before drying begins.
- 6
Safety, Containment, and Site Control
A drying job is a hazard-managed worksite. Start with electrical safety: standing or hidden water plus powered equipment is a shock risk. Confirm circuits feeding wet areas are de-energized where appropriate, use GFCI protection on all equipment, and never run cords through standing water. Verify you are not overloading circuits with multiple air movers and dehumidifiers; distribute loads.
Curriculum
What you’ll learn
- Read a psychrometric chart to track temperature, relative humidity, GPP, and dew point through a drying job.
- Calculate the number of air movers and dehumidifier capacity a structure requires based on affected area and class of water.
- Choose between refrigerant, LGR, and desiccant dehumidifiers for the conditions and load on site.
- Design directional airflow that moves moisture off surfaces and into the dehumidification system efficiently.
- Apply controlled drying to wet materials — drywall, framing, hardwood, and concrete — instead of premature removal.
- Use moisture meters, hygrometers, and data loggers to establish a dry standard and confirm materials reach it.
- Recognize and correct stalled drying caused by overhumidified air, trapped moisture, or undersized equipment.
- Document daily psychrometric readings and equipment placement to support the drying plan for insurers.
What's included
Everything you get with enrollment
One price — the course, the exam, the certificate, and the tools to put it to work.
Self-paced lessons
Practical, standards-based lessons you can start, pause, and finish on your own schedule.
A real certification exam
A short multiple-choice exam that confirms you absorbed the material — 75% to pass.
Instant certificate
Pass and download your personalized Certificate of Completion the same day.
Unique verification ID
Every certificate carries an ID anyone can confirm online — proof customers trust.
2-year validity + renewal
Your credential is valid for two years, with a simple renewal path before it expires.
Free Find-a-Pro listing
Once certified, claim a free listing so homeowners in your area can hire you.
The process
How it works
Enroll & pay
Secure checkout, instant course access.
Complete the course + short quiz
Self-paced lessons, then a short quiz — 75% to pass, unlimited retries.
Download your certificate
Personalized certificate generated instantly, with a unique verification ID.
Your credential
Your certificate
- Holder name and course title
- Unique certificate ID
- Issue date and expiry date (2-year validity)
- Online verification by ID
A NISCR Certificate of Completion confirms completion of NISCR training and examination. It is a professional credential, not a government license. Where local law requires a license to perform a service, the technician is responsible for obtaining it.
Certificate
of Completion
This certifies that
Your Name
has completed
Applied Structural Drying
- Certificate No.
- Valid
- NISCR-ASD-2026-XXXXXX
- 2 years
Enroll
Enroll today
$199
Course + certificate + renewal eligibility.
Keep going
Related certifications
Questions
Frequently asked questions
- Is this a license?
- No. A NISCR Applied Structural Drying Certificate is a professional credential confirming you completed NISCR training and examination in drying science. It is not a government license. Where local law requires a license to perform a service, you are responsible for obtaining it.
- How fast do I get the certificate?
- Immediately. As soon as you complete the course and pass the short quiz, your personalized certificate is generated and available to download — typically the same day you enroll.
- Does my state require a license for this work?
- It varies. Some states and municipalities require contractor or restoration licensing for water-loss and drying work. Check your local requirements; this certification complements, but does not replace, any required license.
- Do I need a water damage background first?
- It helps but isn't required. This course covers the drying science — psychrometry, airflow, and dehumidification — from the ground up, so extraction-only technicians and newcomers can both follow the material and apply it on the job.
- Do I need special equipment to take the course?
- No. The training is fully online and teaches you how to select, size, and place air movers, dehumidifiers, and moisture-monitoring tools. You apply the methods on real jobs using your own or your employer's equipment.
- What does the exam cover?
- A short quiz with a 75% pass mark and unlimited retries, covering psychrometric calculations, equipment selection, airflow design, and reaching a documented dry standard.