Water damage restoration doesn't stop when standing water is removed. Proper structural drying is one of the most critical parts of water damage restoration. When drying isn't performed correctly, moisture can remain trapped inside building materials, leading to secondary damage, longer drying times, microbial growth concerns, and unhappy customers.
The IICRC Applied Structural Drying (ASD) certification teaches restoration professionals how to properly evaluate, monitor, and dry water-damaged structures using scientific drying principles and industry best practices.
If you've already earned your Water Restoration Technician (WRT) certification and are looking to advance your expertise, ASD training helps technicians build deeper knowledge and confidence in handling complex drying projects.
What Is Applied Structural Drying (ASD)?
Applied Structural Drying (ASD) is an advanced water damage restoration certification focused on the science and practice of drying structures and contents after water losses.
The course builds on foundational restoration concepts by teaching technicians how to:
- Evaluate moisture conditions
- Understand psychrometry and drying science
- Develop drying goals and drying plans
- Use moisture detection equipment
- Monitor drying progress
- Document restoration projects
- Calculate equipment requirements
- Apply practical drying strategies to real-world losses
The certification is designed to help restoration professionals improve drying efficiency while reducing risk and improving project outcomes.
What Does an ASD Technician Do?
Professionals trained in Applied Structural Drying may be responsible for:
- Assessing water-damaged properties
- Measuring temperature, humidity, and moisture content
- Developing structural drying plans
- Positioning air movers and dehumidifiers
- Monitoring drying progress
- Adjusting equipment placement as conditions change
- Documenting drying logs and project data
- Communicating drying expectations to customers and insurance stakeholders
Proper drying isn't simply about placing equipment and waiting. ASD training focuses on understanding why materials dry, how environmental conditions impact drying speed, and how technicians can improve performance.
ASD vs WRT: What's the Difference?
Water Restoration Technician (WRT) certification is a prerequisite for Applied Structural Drying (ASD) training. Students must hold an active WRT certification—or be waiting on WRT exam results—to enroll in ASD training.
Many restoration professionals earn WRT first to build foundational water restoration knowledge before advancing into the more technical drying science taught in ASD.
WRT (Water Restoration Technician) focuses on:
- Water damage categories and classes
- Extraction procedures
- Safety considerations
- Basic drying principles
- Inspection and documentation
- Restoration processes
ASD (Applied Structural Drying) expands deeper into:
- Psychrometry
- Vapor pressure relationships
- Drying chamber concepts
- Equipment calculations
- Advanced moisture mapping
- Specialized drying strategies
- Scientific drying methodologies
Think of WRT as learning the foundations of water restoration. ASD builds advanced technical expertise around drying performance and project management.
WRT and ASD Combo Courses
Some training providers offer combined Water Restoration Technician (WRT) and Applied Structural Drying (ASD) programs.
The WRT/ASD combo course allows technicians to complete foundational water restoration training and advanced drying instruction within a coordinated training schedule.
Combo courses can be especially valuable for:
- New restoration technicians
- Companies onboarding employees
- Professionals looking to accelerate certification pathways
- Restoration businesses building internal technical expertise
Because WRT is required before ASD certification, combo programs are structured so technicians can complete WRT first, then immediately advance into ASD training within the same week.
Who Should Take ASD Training?
Applied Structural Drying certification is ideal for:
- Water restoration technicians
- Restoration project managers
- Restoration company owners
- Lead technicians
- Estimators and operations leaders
- Professionals pursuing advanced or Master IICRC certifications
Many companies view ASD certification as an investment in improving drying efficiency, reducing callbacks, and strengthening technical credibility
How Long Does ASD Training Take?
Applied Structural Drying (ASD) training is an intensive 3-day course that combines classroom instruction with hands-on learning.
Unlike some restoration certifications that may be offered through live online instruction, ASD training requires in-person participation because students complete practical drying exercises in a flood house environment.
The flood house component gives technicians the opportunity to apply drying science principles in realistic water damage scenarios while working directly with restoration equipment and moisture monitoring tools.
Why Hands-On Flood House Training Matters in ASD Certification
Applied Structural Drying goes beyond theory.
The ASD training program includes hands-on learning inside a flood house: a controlled training environment designed to simulate real-world water damage conditions.
Students have the opportunity to:
- Measure moisture conditions
- Monitor humidity and drying progress
- Position drying equipment
- Evaluate drying chamber performance
- Apply psychrometric principles
- Adjust drying strategies based on changing conditions
Hands-on training helps bridge the gap between classroom knowledge and field application, helping restoration technicians build confidence before managing drying projects in customer homes and businesses.
What Equipment Is Covered in ASD?
Applied Structural Drying training commonly addresses equipment such as:
- Air movers
- Refrigerant dehumidifiers
- Desiccant dehumidifiers
- Moisture meters
- Thermal imaging tools
- Hygrometers
- Water extraction equipment
- HEPA air scrubbers
Students learn how equipment selection and environmental conditions work together to influence drying outcomes
ASD Certification Cost
As of 2026, many ASD courses fall within the $999–$1,400 range, though pricing varies by provider and location.
The IICRC certification exam is a separate fee from course tuition. Read more on frequently asked questions about IICRC certifications.
Career Benefits of ASD Certification
Advanced restoration training can help professionals:
- Build technical confidence
- Improve drying performance
- Strengthen documentation practices
- Increase customer trust
- Improve efficiency on projects
- Expand career opportunities
- Differentiate their company from competitors
For restoration businesses, stronger technical capabilities can also contribute to reduced rework, better project outcomes, and stronger customer satisfaction
Where Can I Find ASD Training Courses?
If you're ready to expand your water restoration expertise, Applied Structural Drying certification can help build advanced skills that improve drying performance and strengthen your restoration knowledge.
Explore upcoming ASD training opportunities and find an Applied Structural Drying course that fits your schedule.
Frequently Asked Questions
Yes. Water Restoration Technician (WRT) certification is a prerequisite for ASD training. Students must either hold WRT certification or be waiting on WRT exam results.
Some training providers offer combined WRT and ASD programs that allow technicians to complete both certifications in a coordinated training schedule.
No. Applied Structural Drying (ASD) training includes hands-on flood house exercises and requires in-person participation. ASD certification cannot be completed entirely online.
Many ASD courses are delivered over three days and combine classroom learning with practical exercises.
Yes. ASD certification requires successfully completing the IICRC certification exam.