Signage Industry Glossary
Essential terminology for architects, general contractors, and building owners
A
ADA Signage
Signs compliant with the Americans with Disabilities Act, including tactile characters, Braille, and specific mounting heights. Required in all public buildings.
Awnings
Fabric or metal projections over entrances, used for branding and weather protection. Can be illuminated or non-illuminated.
B
Backlit Signage
Signs with light sources behind the sign face, creating a halo or glow effect. Also called reverse-lit or halo-lit channel letters.
Band Sign
A sign mounted horizontally along a building facade, typically at parapet level. Common on retail and industrial buildings.
Blade Sign
A sign projecting perpendicular from a building wall, visible to pedestrian traffic. Often double-sided for maximum visibility.
Building Code
Local regulations governing sign size, placement, illumination, and materials. Varies by municipality.
C
Channel Letters
Three-dimensional letters fabricated from aluminum or plastic, typically illuminated from inside (front-lit) or behind (backlit/halo-lit).
CNC Routing
Computer Numerical Control cutting process used to carve letters, logos, and shapes from aluminum, acrylic, wood, or foam.
Column Wrap
Signage or decorative cladding applied to structural columns. Used for wayfinding, branding, or concealing structural elements.
Contrast Ratio
The difference in brightness between a sign text and background. ADA requires minimum 70% contrast for legibility.
Coping Sign
Signage installed along the top edge (coping) of a building. Large-scale identification visible from a distance.
Crown Sign
A sign mounted at the top or roofline of a building for maximum visibility. Often the largest sign on a structure.
D
Day/Night Sign
A sign designed to look good in daylight and at night when illuminated. Uses translucent vinyl or perforated films.
Digital Print
Large-format inkjet printing on vinyl, fabric, or rigid substrates. Used for wall wraps, window graphics, and temporary signage.
Directional Signage
Wayfinding signs that guide visitors through a facility or campus. Includes directories, parking signs, and corridor markers.
E
Egress Signs
Emergency exit signs required by IBC and fire codes. Must be illuminated and meet photoluminescence or LED requirements.
Electrical Permit
Permit required before installing illuminated signs. Must be obtained before fabrication begins in most jurisdictions.
F
Fabrication Drawing
Technical shop drawing showing dimensions, materials, mounting details, and electrical specs. Required before production.
Fascia Sign
A sign mounted flat against a building face. The most common commercial sign type. Can be illuminated or non-illuminated.
Flat Cut Letters
Letters cut from flat sheet material (aluminum, acrylic, brass) using laser, waterjet, or CNC. Non-illuminated.
Frosted Vinyl
Translucent vinyl film applied to glass for privacy, branding, or wayfinding. Also called etched glass vinyl.
G
Gang Sign
Multiple signs from different tenants installed as a unified system on a building face. Requires tenant coordination.
Graphic Overlay
A printed or vinyl layer applied over a sign substrate for branding, labeling, or decorative purposes.
H
Halo-Lit
Channel letters illuminated from behind, casting a glow on the wall. Creates an upscale, subtle effect. Also called reverse-lit.
I
IBC (International Building Code)
Model building code adopted by most US jurisdictions. Chapters 10 and 14 govern sign installation and egress.
Illuminated Sign
Any sign with internal or external lighting. Includes neon, LED, fluorescent, and fiber-optic types.
Installed Height
Measurement from finished floor to sign bottom. ADA mandates 48-inch minimum to 60-inch maximum for tactile signage.
L
LED Module
Small light-emitting diode units mounted inside channel letters or light boxes. Modern replacement for neon and fluorescent.
Lobby Sign
Interior signage in building lobbies or reception areas. Typically dimensional letters, logos, or acrylic panels.
M
Monument Sign
A freestanding sign with a solid base, typically 3-8 feet tall. Low-profile, architectural. Common at building entrances.
MDO (Medium Density Overlay)
A plywood panel with resin-impregnated face. Durable outdoor substrate for painted signs. Less expensive than aluminum.
N
Neon Sign
Glass tubes filled with neon or argon gas, illuminated by electrical discharge. Classic look, higher maintenance than LED.
Non-Conforming Sign
A sign that does not meet current zoning code but was legal when installed. Grandfathered until modified.
P
Pan-Face Sign
A sign with flat translucent acrylic face and formed returns. Illuminated from inside by fluorescent lamps or LED modules.
Parking Sign
Regulatory and directional signs for parking lots and garages. Includes reserved spaces, ADA access, and traffic direction.
Pylon Sign
A tall freestanding sign supported by one or two poles. Highly visible from highways and roads.
R
Raceway
An aluminum channel housing electrical wiring and sometimes sign letters. Simplifies installation and maintenance.
Reflective Vinyl
Retroreflective sheeting that bounces light back to the source. Used for traffic and highway signage.
S
Sandblasted Sign
Created by blasting abrasive material through a stencil onto wood or HDPE. Textured, rustic look for parks and resorts.
Scored & Bent
Aluminum composite (ACM) scored on the back and bent to form dimensional letters. Lightweight and clean-looking.
Sign Code
Local ordinance regulating sign types, sizes, heights, setbacks, illumination, and permits. Every municipality has one.
Sign Permit
Permit from local building department before sign fabrication or installation. Required in most jurisdictions.
Substrate
Base material a sign is made from. Common: aluminum, ACM (Dibond), acrylic, PVC, wood, MDO plywood, polycarbonate.
T
Tenant Sign
Identification signage for individual tenants in a multi-tenant building. Installed on fascia, monument, or pylon signs.
V
VCT (Vinyl Channel Trim)
Extruded vinyl trim pieces to finish sign face edges. Available in multiple colors. Clean, finished look.
Vehicle Graphics
Vinyl wraps or decals applied to vehicles for branding. Full wraps, partial wraps, and cut vinyl lettering.
Vinyl Lettering
Letters and graphics cut from colored vinyl film. Applied directly to surfaces. Cost-effective for windows, walls, vehicles.
W
Wayfinding
The system of signs, symbols, and visual cues that help people navigate a space. Includes directories and directional arrows.
Wet Location Rating
UL or ETL listing for electrical signs in outdoor or wet environments. Required by code for all exterior illuminated signs.
Z
Zoning Variance
An exception to sign code granted by the local zoning board. Required when a proposed sign does not meet code requirements.