Webinar instructions will be emailed before the date of the webinar.

Please log into the webinar 15 – 30 minutes before start time.

Friday, February 17, 2023 
10:00 am – 12:00 pm CST


Presented by
Doug Parkhurst

Moisture Intrusion and Structures
Why moisture intrusion occurs in structures
Case Study #1
– Design errors
– Construction defects
– Deferred maintenance
Common locations where moisture intrusion occurs
Case Study #2
– Site preparation
– Initial construction layout
– Common areas in the building envelope
– Damages to structures
Case Study #3:
– Degradation of building materials
– Mold/indoor air quality
– Mitigation
Case Study #4
– Historic structures
– Mitigation strategies


Webinar Instructions
All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.

Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.

Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.

GoToWebinar App requirements:
Windows 7 – 10 or Mac OSX Mavericks (10.9) – macOS Catalina (10.15)

Web Browser:
The two most recent version of the following browsers:
Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge
Internet Explorer v11 (or later) with Flash enabled

Internet connection: Minimum of 1Mbps       Hardware: 2GB RAM or more

For more information, visit the Support section at


Professional Engineers:
2.0 PDHs

2.0 HSW CE Hours

International Code Council:
.2 CEUs (Building)


Continuing Education Credit Information 
This webinar is open to the public and is designed to qualify for 2.0 PDHs for professional engineers and 2.0 HSW continuing education hours for licensed architects in all states. 

 HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700) and North Carolina (S-0130). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2) and §69.6(i)(2)). Other states do not preapprove continuing education providers or courses. 

The American Institute of Architects Continuing Education System has approved this course for 2.0 LU|HSWs (Sponsor No. J885). Only full participation is reportable to the AIA/CES. 

 The International Code Council has approved this event for .2 CEUs in the specialty area of Building (Preferred Provider No. 1232). 

Attendance will be monitored, and attendance certificates will be available after the webinar for those who attend the entire course and score a minimum 80% on the quiz that follows the course (multiple attempts allowed). 


Doug Parkhurst

Senior Forensic Engineer for the CAT Forensic Services office located in Little Rock, Arkansas.
Mr. Parkhurst holds a B.S. degree in Materials Engineering and an M.S. degree in Civil & Environmental Engineering, and he is a registered professional engineer in Arkansas, Kansas, Mississippi, Oklahoma, Oregon and South Carolina. Mr. Parkhurst has performed hundreds of evaluations and investigations with respect to residential, commercial, and agricultural structures, as well as municipal infrastructure components, to document and analyze failures from the effects of wind, vibrations, explosions, earthquakes, floods, foundation failures, moisture intrusion, construction defects, cathodic protection systems, lightning damage, manufacturing defects, corrosion failures, weld failures, building envelope failures, and failures of components and cladding, as well as failures of a variety of materials used in construction of modern and historic structures. Mr. Parkhurst is a member of the American Society of Civil Engineers (ASCE), the Structural Engineers Institute (SEI). Mr. Parkhurst consults and provides educational services related to failures of residential, commercial, and agricultural structures.

AIA Info

AIA Provider Statement:

HalfMoon Education Inc. is a registered provider of AIA-approved continuing education under Provider Number J885. All registered AIA/CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider of learning program may be sent to AIA/CES ( or (800) AIA 3837, Option 3).

This learning program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

AIA continuing education credit has been reviewed and approved by AIA/CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

Course Title: How to Identify and Mitigate Moisture Intrusion in Structures: Case Studies

Delivery Method: Live Online

Course Description: This course examines case studies of structures damaged by water intrusion. The four case studies focus on why moisture intrusion occurs in structures, common locations where moisture intrusion occurs, the damages to structures, and mitigation strategies.

Learning Objectives:

Learning Objective 1:
Learners will be able to identify the design errors, construction defects and deferred maintenance that lead to moisture intrusions.

Learning Objective 2:
Learners will be able to evaluate site preparations, initial construction layout, and common areas in the building envelope to locate the common locations where moisture intrusion occurs.

Learning Objective 3:
Learners will be able to analyze the degradation of building materials and air quality caused by mold to understand the damage that moisture can inflict on a building.

Learning Objective 4:
Learners will be able to review historic structures and proper mitigation strategies to prevent or reduce the damage done by moisture intrusions.

LUs: 2.0                                                                                            LU Type: LU|HSWs.

Prerequisites: Experience with building design and construction

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 11/29/2025

Complaint Resolution Policy:

Complaints regarding this course can be emailed to or by calling (715) 835-5900. A HalfMoon Education representative will respond within 72 hours to resolve the complaint, which will include, but not limited to, access to another CE activity at no or reduced cost or a full or partial refund. Each instance will be resolved on a case-by-case situation.