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Registered Exterior Wall Consultant – REWC®

Those who desire to become Registered Exterior Wall Consultants must substantiate, to IIBEC, fulfillment of certain requirements. These requirements include verifiable levels of work experience and education, high ethical standards and a satisfactory score on both the REWC and General Consultant Knowledge (GCK) Exams.  Those who hold other IIBEC consultant designations are exempt from taking the GCK exam.  There is no separate application for the GCK Exam, as approval of the REWC application will qualify the candidates to take the general exam.

REWC Application Requirements

Verification of an applicant’s work experience is done using a point system. A minimum of 100 points is required from a minimum of three of 12 categories which identify the responsibilities of an exterior wall consultant.

The applicant must have at least six years of exterior wall consulting experience. The applicant must also earn a minimum of 150 hours of continuing education hours from a minimum of three technical programs within the roofing, waterproofing or exterior wall industries. Credit will be given toward this requirement for advanced degrees and professional licensing.

5 references are required.

Click the REWC Flyer to download and learn more.

REWC Application Process

Candidates are encouraged to use the online interactive electronic process to complete the application.

A user account is all that is required to log in to the portal to complete an application. You may enter and save the information until the application has been completed.  It can then be electronically submitted to IIBEC for review and approval.  Once begun, the application must be completed and submitted to IIBEC within one year or the application in process will expire.


Applications in .pdf format are also available upon request.

Click here to download the REWC handbook.

Allow 90 days for processing once an application is submitted to IIBEC.  The application will be processed within 60 days for an additional expediting fee ($50 member/$100 nonmember).  The REWC exam is administered at over 1,000 conveniently located testing centers worldwide.  An exam registration form will be provided to the candidate when the application has been approved. The candidate’s information will be conveyed to Meazure Learning, the Internet-based testing company, once the registration form and exam fees have been received.

Computer-based testing is offered on demand to approved candidates subject to individual testing center hours and availability. Consult Meazure Learning for testing center locations.

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The REWC computer-based exam includes 60 multiple-choice questions that involve all phases of exterior wall consulting such as:  evaluation, design, testing, codes and standards, and construction of exterior wall systems.

Download a Registered Exterior Wall Consultant (REWC) exam study guide.

Note: IIBEC Educational Programs, in particular the Exterior Walls Technology & Science, Exterior Concrete Wall Systems, Masonry Wall Systems, and Exterior Finish Cladding Systems courses, may prove useful for anyone planning to pursue the REWC credential.

Download Exam Study Guide


REWC Annual Renewal

A renewal fee is required annually, as well as 12 roofing, waterproofing, and/or exterior wall related continuing educational hours (CEHs).  All registrants are encouraged to self-report CEHs via the IIBEC website.


Application Fee

$375 – IIBEC member
$475 – Nonmember

Examination Fee

$275 – IIBEC member
$375 – Nonmember

Annual Renewal Fee*

$175 – IIBEC member
$275 – Nonmember

*There is a 10% discount from the base renewal rate for each additional designation.

For more membership, registrations, and external IIBEC-approved continuing education information, contact a member of the membership & credentials team.

Membership & Credentials Team

General Consultant Knowledge Exam

This exam tests knowledge common to all components of the building envelope (roofing, waterproofing and exterior walls).  This was designed to produce a more efficient testing process, eliminating common information being tested for each consultant designation.  To earn the REWC designation, a candidate must pass the general exam as well as the REWC technical exam.  However, applicants who currently hold the Registered Roof Consultant (RRC) and/or Registered Waterproofing Consultant (RWC) designation(s) are exempt from taking the GCK exam.

If only one of the two exams is passed (the general or the technical), the candidate will be required to retake only the exam he or she failed.  The exam that has been passed will be valid until the candidate passes the other exam and the first consultant designation is earned.  Candidates who do not pass an exam will have the option to retry every four months with a valid application.

The exam is computer-based and offered at over 1,000 conveniently located testing locations. Visit Castle Worldwide for testing center locations.  The exam is up to 4 hours long and consists of 90 multiple-choice questions which test knowledge in the following general consulting areas:  ethics, general skills, communications and reports, codes and standards, design processes, procurement processes, agreements, and construction administration.

Download the General Consultant Knowledge (GCK) Exam Study Guide.

Note: IIBEC’s Professional Building Enclosure Consulting course is recommended for anyone planning to take the GCK exam.

General Consultant Knowledge Exam Fees

Examination Fee

$250 – IIBEC member
$350 – Nonmember

For more membership, registrations, and external IIBEC-approved continuing education information, contact a member of the membership & credentials team.

Membership & Credentials Team