Authored by Robert J. Dinjar, P.E., Structural Technical Director, Technical Services
Published June 15, 2026.
Case Study Overview
Following a successful building enclosure design review during Phase 1, a client returned to Rimkus during Phase 2 to request another review for a second campus building
|
SERVICE LINE |
FACILITY TYPE |
LOCATION |
REVIEW PHASE |
|---|---|---|---|
|
Third-Party Design Review |
K-12 School |
Spring, Texas |
Pre-Construction (Design Documents) |
|
2nd |
3 |
PRE-CONSTRUCTION |
K-12 |
|---|---|---|---|
|
Consecutive engagement: same school operator, same architect, same trusted reviewer |
Building enclosure systems reviewed: water, air, and thermal barriers |
Issues identified before any materials are installed on site |
School campus: long-term occupant health and building performance at stake |
The Context: A Trusted Review Process Carried Forward
The best indicator of the value an advisory relationship delivers is whether the client returns. When the project team behind a growing network of K-12 school campuses in Texas engaged Rimkus Built Environment Solutions (BES) to review the building enclosure design for a new Phase 2 campus building ā after Rimkus had reviewed an earlier campus ā it reflected something important: independent, specialist review had become a deliberate part of how this team manages risk on new school construction.
The Phase 2 project was a new building on a separate campus in the Houston metro area. While it was a new project with its own unique construction documents, the owner, architect, and review team were all the same ā bringing continuity of expectation, methodology, and trust to the engagement.
The goal was identical to Phase 1: identify any gaps in the water, air, and thermal barrier design before construction commenced, when corrections are fast and inexpensive rather than disruptive and costly.
The Approach: Same Methodology, New Building
The Rimkus team conducted an independent review of the construction drawings and specifications for Building B, applying the same structured, performance-focused methodology used on Phase 1. The review was specifically scoped to the building enclosure systems ā not a full code compliance review, but a targeted evaluation of the assemblies, details, and specifications that govern how the building manages water, air movement, and heat transfer. The three systems reviewed were:
Water Barrier Systems
- Fenestration sill pans and drainage details, roof drainage at crickets and scuppers, J-metal trim and flashing gaps, and the continuity of waterproofing across all transitions and penetrations
Air Barrier Systems
- The design’s provision for a continuous, uninterrupted air control layer across all assemblies and detail conditions throughout the building
Thermal Barrier Systems
- Insulation placement and continuity, with a focus on ensuring consistent thermal performance across all wall assemblies and detail conditions
As on Phase 1, comments were issued in two categories: revisions necessary to reduce performance risk (required), and suggestions offered to improve performance at the discretion of the Designer of Record (recommended). Each unique condition was marked once, with all similar conditions understood to carry the same comment.
Key Findings: Familiar Patterns, Project-Specific Details
Building enclosure design documents for institutional facilities commonly share certain gap patterns ā not because design teams are careless, but because construction documents are complex, and enclosure details are often not the primary focus of internal review cycles. The Rimkus team’s experience across multiple K-12 projects means these patterns are immediately recognizable ā which is precisely why continuity between Phase 1 and Phase 2 review adds value.
The Phase 2 review identified a consistent set of issues spanning all three enclosure systems and the supporting specifications:
|
System / Area |
Type |
Issue Identified |
Recommended Action |
|---|---|---|---|
|
Water barrier: sill pans and fenestration drainage |
Recommended |
Sill pan drainage slope, weep type and spacing, and integral back dams at windowsills were unspecified, creating risk of water accumulation at window and door openings |
Specify sill pan type with integral back dams, drainage slope, weep locations, and gap distances between J-metal trim and flashing for effective drainage |
|
Water barrier: roof cricket and scupper drainage |
Recommended |
No slope specified for crickets at scuppers; tapered insulation at crickets and saddles not specified at twice the field slope per NRCA best practice |
Specify cricket locations, slopes, and minimum 1/2:12 saddle insulation slope (double the 1/4:12 field slope) per NRCA recommendations |
|
Air barrier: continuity across all details |
Required |
Air barrier continuity not confirmed across all details; gaps in the air control layer can undermine thermal performance and create condensation risk |
Ensure air barrier is fully detailed as a continuous layer across all assemblies, transitions, and penetrations throughout the document set |
|
Specifications: foundation drainage drawing |
Required |
Pre-construction and temporary drainage addressed in specs, but no corresponding drawing detail provided for foundation drainage |
DOR to provide a dedicated drawing detail for foundation drainage to complement the existing specification language |
|
Specifications: mockup locations and QA/QC protocols |
Recommended |
Mockup requirements referenced in individual specification sections but not located on drawings; QA, QC, and field performance testing protocols not specified |
Indicate mockup locations on drawings; define required inspections, QA/QC procedures, and performance testing scope ā including for metal soffit panels |
|
Specifications: sealant joint field testing |
Recommended |
No hand pull-tab sealant field testing protocol specified; no field adhesion test log required for close-out submittal |
Specify testing frequency (10 tests per first 1,000 LF; 1 per 1,000 LF thereafter), documentation format, escalation protocol for failures, and requirement to include test log in owner close-out package |
|
Specifications: roofing edge metal standards |
Recommended |
ANSI/SPRI ES-3 wind design standard not included in references; no requirement for submittals to evidence compliance with ANSI/SPRI ES-1 for low-slope roof edge metal |
Add ANSI/SPRI ES-3 to the reference list and require submittal evidence demonstrating roofing edge metal meets ANSI/SPRI ES-1 requirements per building code |
Notably, several of the same categories identified in Phase 1 appeared again in Phase 2 ā sill pan drainage, cricket slopes, air barrier continuity, sealant testing protocols, and mockup locations. This is not uncommon: these are challenging areas of enclosure documentation that require active, specific attention in every project. The value of having an experienced reviewer who knows what to look for is that none of these gaps reached the field.
āWhen a client returns for a second engagement, it means the first one delivered real value. Our job is to make sure the second one is just as thorough ā because every building deserves the same level of scrutiny.ā ā Robert J. Dinjar, P.E., Structural Technical Director, Technical Services
Review Continuity: Consistent Standards Across Both Campuses
One of the structural advantages of working with the same review team across multiple projects is the ability to apply consistent standards and compare outcomes. The table below illustrates how the Phase 2 review scope aligned with Phase 1 ā and where project-specific conditions were identified.
|
Review Elements |
Phase 1: Sonterra Campus |
Phase 2: Willow Creek Building B |
|---|---|---|
|
Scope |
Water, air, and thermal barriers |
Water, air, and thermal barriers |
|
Sill pan and fenestration drainage |
Identified ā specified |
Identified ā specified |
|
Cricket and scupper slope |
Identified ā specified |
Identified ā specified |
|
Air barrier continuity |
Identified ā specified |
Identified ā required |
|
Sealant field testing protocol |
Identified ā specified |
Identified ā specified |
|
Mockup locations on drawings |
Identified ā specified |
Identified ā specified |
|
Foundation drainage drawing |
Identified ā specified |
Identified ā required |
|
ANSI/SPRI ES-1 / ES-3 compliance |
Identified ā specified |
Identified ā specified |
The Value Delivered: Portfolio-Level Consistency, Project-Level Precision
The value of this engagement is best understood in two dimensions: the project-level value of catching specific gaps before construction, and the portfolio-level value of applying consistent enclosure standards across multiple buildings in the same operator’s portfolio.
|
Consistent Standards Across the Portfolio |
Risks Eliminated Before Construction |
Institutional Knowledge Applied |
|
By applying the same review methodology to both campuses, Rimkus ensured that Building B would be held to the same performance standards as Phase 1 ā giving the school operator a consistent quality baseline across its growing portfolio. |
Every issue identified was caught while the project was still on paper. Corrections at this stage take hours, not weeks, and cost a fraction of what the same fixes would cost after materials have been installed. |
Having reviewed Phase 1, the Rimkus team brought context to the Phase 2 review ā understanding the design language, the architect’s approach, and the types of details that warranted closest scrutiny. |
|
Design Team Accountability |
QA Built Into the Construction Process |
Decades of Performance Protected |
|
Clear, categorized comments ā distinguishing between required revisions and performance recommendations ā gave the Designer of Record specific guidance without ambiguity about what needed to change versus what was discretionary. |
Recommending sealant testing protocols and mockup specifications embedded quality assurance into the project delivery process, not just the design ā ensuring that what gets installed matches what was designed. |
For a school facility, building envelope decisions made in 2025 will affect students and staff through 2045 and beyond. Getting the water, air, and thermal barriers right at design stage is one of the highest-ROI investments an owner can make. |
Why Ongoing Relationships Strengthen Building Enclosure Outcomes
Third-party building enclosure review delivers its greatest value when it is treated as a standard part of the project delivery process ā not a one-time insurance policy, but a consistent discipline applied to every new construction project in a portfolio. When the same review team works with the same client across multiple projects, the relationship compounds in value.
The reviewer develops an understanding of the design team’s approach, the types of details they produce, and the areas that consistently require attention. The client team develops confidence in the review process and learns from each engagement. The result is a quality feedback loop that makes each successive project more informed and better protected than the last.
For institutional facility owners ā school operators, healthcare networks, government agencies ā who are managing growing portfolios of new construction, this kind of ongoing review relationship is not a luxury. It is a practical risk management strategy that protects both the buildings and the communities they serve.
Key Takeaway
By returning to Rimkus BES for Phase 2, the project team ensured that the same expert eyes, the same rigorous methodology, and the same performance standards that protected Phase 1 were applied to the next building in their portfolio ā turning a single review engagement into a scalable quality assurance practice.
Why Choose Rimkus Built Environment Solutions?
The Rimkus BES team works with owners, architects, and developers on ongoing review programs that apply consistent building enclosure standards across multiple projects ā protecting every building in a portfolio to the same high-performance standard.
We provided the following building enclosure consulting capabilities for this case study, and can offer additional integrated services.
- Third-Party Building Enclosure Design Review
- Multi-Project / Portfolio Review Programs
- Water Barrier System Evaluation (Fenestration, Roof Drainage, Flashings)
- Air Barrier Continuity Review
- Thermal Barrier and Continuous Insulation Assessment
- Construction Document Review (Drawings and Specifications)
- Quality Assurance and Mockup Protocol Recommendations
- Sealant Joint Field Testing Specification
- NRCA and ANSI/SPRI Standards Compliance Review
- Building Enclosure Commissioning (BECx) Support
- Institutional Facility Portfolio Risk Management
Building more than one facility or looking to standardize quality across a growing portfolio?
Connect with a member of our Texas team or submit a request for consultation today!
Meet Our Texas Expert: Robert J. Dinjar, P.E.
Structural Technical Director, Technical Services
Built Environment Solutions, Texas
+1 512 492 2290
[email protected]
View Robert’s Expert Profile
Robert Dinjar specializes in preparing structural engineering designs, designing building lateral resistive systems, and the inspection and certification for high wind and flood compliance. He has experience working with a wide range of structures including commercial buildings, residences, retaining walls, and pools. Robert provides other built environment services such as remediation, construction defect evaluation, structural failure analysis, and storm and flood damage assessment.
This case study is intended to provide general information and insights into prevailing industry practices. It is not intended to constitute, and should not be relied upon as, legal, technical, or professional advice. The content does not replace consultation with a qualified expert or professional regarding the specific facts and circumstances of any particular matter.