Custom HDU Sign Panel with Raised Lettering and Precision Color Matching for Institutional Branding

Single-sided HDU sign engineered and fabricated with raised text, recessed background, and exact PMS color matching — delivered lightweight, installation-ready, and fully aligned with architectural mounting requirements.

Location: Pittsburgh, PA

Client Type: Sign Company (Graphics 22 Signs)

End User: Institutional / Non-Profit

Product: Custom HDU Sign Panel

Dimensions: ~75.75” W × 36” H × 2” D

Weight: ~116 lbs total

Material: High-Density Polyurethane (HDU)

Mounting: Aluminum bracket system to existing monument

Timeline: ~3–4 weeks production

PROJECT OVERVIEW

A sign contractor required a high-precision HDU sign panel to be mounted onto an existing monument structure.

The project demanded:

• strict adherence to provided artwork
• accurate dimensional execution
• exact PMS color matching
• clean integration into an existing architectural system

Unlike large monument builds, this project focused on: finish quality, detail accuracy, and brand consistency

THE CHALLENGE

Context

• Replacement / new panel for existing monument
• Client supplied detailed artwork and revisions
• Installation handled by others → fabrication had to be exact

Key Constraints

• Fixed dimensions tied to existing structure
• Mounting compatibility with pre-existing brackets
• Strict adherence to branding (fonts, spacing, colors)
• Raised lettering and recessed background requiring precision machining
• Final design revisions mid-process (logo + layout updates)

Risks

• Misalignment with mounting system → installation failure
• Incorrect color matching → brand inconsistency
• Poor depth execution → weak visual contrast
• Warping or instability if material choice was wrong

This is a classic “looks simple, but easy to mess up” project.

THE SOLUTION (ENGINEERING APPROACH)

Material Selection

• High-Density Polyurethane (HDU)
  • Stable
  • Smooth machining
  • Ideal for detailed signage
  • Resistant to warping and moisture

Dimensional Accuracy

Based on the technical drawing:

• Width: ~75.75 inches
• Height: ~36 inches
• Thickness: ~2 inches

Designed to: fit precisely within an existing monument frame

Structural Integration

• Aluminum side brackets (top and bottom extension)
• Designed for attachment to existing structure
• Ensured alignment and stability during installation

Fabrication & Detailing

• CNC-machined HDU board
• Raised lettering and border
• Recessed background for contrast
• Clean edge framing detail

Color System

From drawing specs:

• Purple: PMS 268
• Blue: PMS 298
• Red: PMS 185

Exact color matching was required for:

• brand consistency
• institutional identity compliance

SYSTEM ARCHITECTURE

Layer Breakdown:

• HDU base panel (2” thick)
• CNC-machined recessed background
• Raised lettering and border elements
• Multi-layer paint system (PMS-matched)
• Aluminum mounting bracket system

BEFORE / AFTER COMPARISON

BEFORE

• Existing monument structure without final branded panel

AFTER

• Fully integrated sign panel
• High-contrast raised lettering
• Clean, readable institutional branding

IMPLEMENTATION PROCESS

Step 1 – Design Validation

• Review of provided artwork and revisions
• Confirmation of layout, spacing, and logo placement

Step 2 – Engineering Alignment

• Adjustment to fit existing structure
• Mounting system integration

Step 3 – CNC Fabrication

• Precision cutting of HDU board
• Formation of recessed and raised elements

Step 4 – Finishing

• Multi-color application (PMS matched)
• Edge detailing and border finishing

Step 5 – Shipping

• Palletized shipment (~116 lbs total)
• Delivered to fabrication partner location in Pittsburgh
• Forklift unloading available at destination

RESULTS (KEY METRICS)

• Lightweight panel (~116 lbs) enabling easy handling
• Fabricated within ~3–4 weeks timeline
• Exact dimensional fit for existing structure
• Accurate PMS color reproduction
• High-contrast readability due to raised/recessed design
• Reduced installation risk due to pre-engineered mounting system

VALUE ANALYSIS

COMPLIANCE & ENGINEERING

• Exterior-grade HDU material
• Suitable for long-term outdoor use
• Stable under temperature variation
• Compatible with existing structural mounting systems

CLIENT IMPACT

“The project required precise alignment between updated design inputs and fabrication, ensuring the final sign matched both branding requirements and existing structural constraints.”

FAQ

Q: Why use HDU instead of wood?

HDU provides better dimensional stability, smoother finish, and longer lifespan outdoors.

Q: Can exact brand colors be matched?

Yes — PMS-based color matching was used in this project.

Q: Is this suitable for retrofitting existing monuments?

Yes — this system was specifically designed for integration with an existing structure.