Digital Loudoun Plaza


44060 Digital Loudoun Plaza is a 98-acre secured data center campus located in Northern Virginia convenient to Washington Dulles Airport and major roadways. Owned by Digital Realty, Inc., the world’s largest data center solutions provider, the plaza is located in Loudoun County, a major hub for worldwide internet traffic. Digital Realty rents equipment, space and bandwidth in state-of-the art data centers to companies that may lack the knowledge or resources to create and maintain facilities that meet their computing needs. The campus consists of 10 buildings, each designed with a single main entry point, that are surrounded by a perimeter fence and secured by a 24/7/365 guard station, key card access, closed-circuit TV and biometric controls.

While dedicated power and cooling keep the data centers running, reliable and secure wall cladding is also essential to safeguarding high-end equipment and data. Fabral® metal wall panels clad two new campus structures, Building J and Building K. Aluminum concealed fastener and exposed fastener profiles create a modern appearance consistent with the buildings‘ high tech purpose.

With a range of profiles and configurations, Fabral Silhouette HCF SeriesTM concealed fastener panels meet design requirements for a variety of applications. Here, 12″ and 16″ .040“ panels in Gray Velvet add visual clarity to the facade. Contrasting Hefti-Rib panels in Network Gray screen the roof’s perimeter. Distinguished by their superior strength-to-weight ratio and spanning capabilities, Hefti-Rib adds texture and strength while serving as a durable exterior canvas.

Seamless mitered corners were specifically engineered to ensure complete horizontal continuity. Factory-coated with primer and paint finish to color-match the adjacent panels, the corners are folded to the desired angle and structurally bonded to eliminate transition lines. The finished weathertight, structurally sound corners create a continuous appearance appropriate to the quality of the service of the building provider.


The fabricator, John W. McDougall, credits Fabral with helping the firm win the contract. On the first of the two buildings to be completed, Building K, Fabral quality and value convinced the architect to work with the panels. Based on this success, Fabral panels were subsequently specified for Building J.

Fabral also came through with order delivery. When the installation timeline for Building K was reduced from 11 weeks to seven, Fabral panels and accessories were delivered within three weeks to keep the project on schedule.

Tim Howell, VP Construction at John W. McDougall, Co, Inc., says, “We always enjoy working with Fabral. The company offers solid delivery, good product and has great people. And they step up to fix problems, which means a lot.”

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Project Details

General Contractor – Hitt Contracting
Architect / Designer – Herring & Trowbridge
Fabricator – John W. McDougall, Co, Inc.

Color Details

Silhouette HCF Series in Gray Velvet and Hefti-Rib in Network Gray

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Product Details


Superior strength-to-weight ratio and spanning capabilities set this panel apart. It adds texture and strength to designs and can act as a canvas on the exterior.

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Panel Options Available: Panel Variations HR-288 and Reverse Run Hefti-Rib I are Available
Substrate Offering:
.032″ Aluminum .040″ Aluminum .050″ Aluminum 18 Gauge Steel 20 Gauge Steel 22 Gauge Steel 24 Gauge Steel 26 Gauge Steel
Panel Features:
Vertical & Horizontal Applications
Customizations Available:
Curving Options Mitered Corners Wall & Roof Variations
Maximum Panel Length: 45′
Minimum Panel Length: 6′

Silhouette HCF Series™

With a range of profiles and configurations, this horizontal concealed fastener system meets design requirements for a variety of applications

View Product Specs

Silhouette HCF Series™

Panel Options Available: Multiple Panel Profiles Designs with both 12″ and 16″ options
Substrate Offering:
.032″ Aluminum .040″ Aluminum .050″ Aluminum 18 Gauge Steel 20 Gauge Steel 22 Gauge Steel 24 Gauge Steel
Panel Features:
Factory Applied Sealant
Customizations Available:
Mitered Corners
Maximum Panel Length: 20′
Minimum Panel Length: 2′