Overview
Your sign operates continuously, and after dark the message depends on the direction of the light. It may emerge from the letter itself, or it can pour behind the letter and wash the wall. There are many owners who order the illumination without considering the colour of the wall, the texture of the surface, the local lighting regulations, etc., and find themselves with a halo that fades into the dark brick or letters that reflect the light off the street. This guide compares the two styles so you can evaluate the right direction before anything is manufactured. Channel letters are 3-dimensional signs that offer focused branding over your main entrance, and our custom outdoor business signs range from a variety of exterior identification.
Technical Anatomy: How Front-Lit and Halo-Lit Letters Are Built
Anatomy of Front-Lit Letters:
Front-lit (face-lit) Letters are acrylic letters with a translucent surface (face) that is held in place by a plastic or aluminum trim cap, typically 3/16” thick. The sides (returns) are made from heavy gauge aluminum and are completely solid, so there is no escape around to the sides. The light of all the UL-rated LED modules within is channelled ahead via the coloured or white face.
Anatomy of Reverse Halo-Lit (Backlit) Letters:
Reverse halo-lit (backlit) letters do just the opposite! No light leaks from the front or sides as the face and returns are solid welded aluminum. The back is open or fitted with clear polycarbonate, with LEDs facing the building. The letter is held off the wall using non-corrosive standoff spacers, which are usually 1½" to 2" deep. This opening allows the light to disperse and create the halo.
Direct Comparison: Visual Impact, Contrast, and Distance Legibility
Front-Lit Channel Letters: Bold Readability for Fast Traffic
Front-lit letters project high-lumen, high-contrast light that pierces the rain, fog, and the light of nearby storefronts. They are more suitable for multi-lane arterials or retail plazas in the suburbs where drivers have seconds to locate you. They also work on nearly any wall color or material as the light is emitted from the face. See our custom illuminated channel letters in action and how front-lit layouts increase readability on busy commercial corridors.
Get a feel for the sign by standing where your customers will see it before you make your decision. In the case of most of them coming in by car from about a hundred or two hundred feet away, then face illumination will give them the extra time that they need to read your name and turn in. The reach becomes less of a consideration if they come on foot or park close beforehand, and appearance can be more important.
Reverse Halo-Lit Channel Letters: Quiet, Architectural Branding
Letters that glow in the dark are subdued and elegant, making them appropriate for corporate headquarters, law firms, medical and dental offices, upscale restaurants, and boutique retail stores.
The wall is important; halos are best done on smooth, light-colored matte surfaces like matte stucco, smooth precast concrete, or neutral fiber-cement. Typically, these walls require a contrasting backer plate to catch the light, as the dark and textured brick and the high-gloss stone both produce an effect of diffusing the light. For those who are more concerned with the daytime look of the letters than the light at night, take a look at our custom dimensional letters for inside and out accents, which are available unlit.
There's a simple test that can help. Observe your wall at nightfall. In the case of a smooth, light surface, it will spread out smoothly. If it's dark, rough, or shiny, you can assume a backer plate from the beginning, as it will be difficult to rework the design once fabrication begins.
Hybrid and Advanced Lighting Options
Combination Front-and-Halo-Lit Letters: The book features front- and halo-lit letters, which are a combination of a colored acrylic face and a clear acrylic back and two LED arrays. You receive a glowing face in color in front and a white halo in the background.
Open-Face / Faux-Neon Channel Letters: Open-face and faux-neon letters allow the LEDs or bent faux neon tubing to be seen inside the acrylic. They're popular in modern restaurants, entertainment venues, and retro urban storefronts.
Either option can be part of an overall exterior commercial building signage system for the exterior environment, which also may incorporate wayfinding and secondary address accents.
Installation Styles: Flush Mount vs. Raceway Mount
Direct Flush Mounting:
The anchor is flush to the wall with wiring running through small individual penetrations in the plenum or attic space. It provides the cleanest finish and is pretty much mandatory for a letter that is to be illuminated by a light source that will be "halo-lit," as the standoff distance must remain consistent. The building owner will have to approve additional holes.
Raceway Mounting:
The letters are mounted at the raceway and contained in an aluminum enclosure with wiring and power supplies. The raceway is painted to blend in with the facade and bolted onto a few places. There are many reasons why it is required by many Utah landlords and strip mall leases, such as wall damage and hookups. Read your lease first before selecting a style.
Local Zoning Codes, Night-Sky Rules, and Glare Control
Signs are controlled, and each city along the Wasatch Front has its own regulations. Common controls include maximum brightness, shielding, and photocell dimmers, which reduce the output levels at dusk. Halo-lit letters are preferred by cities with dark-sky goals and historic overlay districts because the light is directed inward towards the wall rather than out towards the street and sky. Review the city sign ordinance early. We can obtain permits for our clients and make the drawings as the City expects.
Frequently Asked Questions About Channel Letter Illumination
Which style is more visible from long distances at night?
Front-lit is more visible from long distances at night. The light penetrates the face to maintain definition of the stroke at high speeds, from 300 to 500+ feet. The letters are illuminated from the side and are most visible at intermediate and closer distances, such as from a parking lot or sidewalk.
Can halo-lit letters go on dark brick or corrugated metal?
Yes, with a change. Dark or patterned walls absorb light, reducing the halo. The letters are glued onto a special panel that we have painted in a light matte tone to give the glow something to reflect off of.
Are the LEDs efficient and durable in Utah winters?
Yes. UL-listed low-voltage (12V/24V) units for outdoor wet areas. They resist temperatures as low as 0°C; consume up to 80% less electricity than traditional neon and fluorescent tubes; and have a lifespan of 50,000+ hours.
Are channel letters more expensive than a flat illuminated cabinet sign?
Channel letters can have a higher initial fabrication cost because each character is individually formed, finished, wired, and mounted. Final pricing depends on the letter style, size, illumination, mounting method, facade conditions, and project requirements.
Light Up Your Building Facade with Visibility Signs
We create, engineer, and construct channel letters to fit your facade, your local zoning restrictions, and your brand. It is done like this:
- Drop off a storefront photo, exterior photo, measurements, and your logo file.
- Our design team creates day and night mockups of the front-lit and halo-lit alternatives.
- We do engineering, City Electrical Permits, Aluminum fabrication, and installation.
Give us a call at (801) 212-9987 or click Request a Channel Letter Quote & Facade Mockup.
Serving Salt Lake City, West Valley City, Sandy, Draper, Lehi, American Fork, Orem, and Provo.