Installation Resource

Sign Mounting Fastener Suggestions

Use these suggestions as a starting point for choosing fasteners for raceway signs, EZLit direct-mount letters, and self-contained lit shape signs. Your actual wall, structure, local code, and weather exposure still matter.

These are suggestions, not a substitute for local code or structural judgment.

Fastener choice depends on wall material, sign size, backing, and exposure.

Before You Mount the Sign

Start by identifying the sign type. A raceway-mounted channel letter sign spreads attachment across the raceway, while EZLit direct-mount letters attach through mounting tabs or the sign back.

For broader installation context, review our installation instructions and permit guide before scheduling work.

Quick Checks

Confirm the wall material and backing

Check local building code requirements

Account for sign size, weight, and wind exposure

Use washers where lag heads meet raceway flanges

Seal roof penetrations against water infiltration

Consult a structural engineer when conditions are uncertain

Important Installation Note

SignMonkey.com does not guarantee these fastener suggestions will meet your local building codes or be sufficient for your conditions. Your structure and weather exposure must be considered when choosing a fastener. Use your own judgment, follow local codes, and consult a structural engineer when requirements are unclear.

Raceway Sign to Structure

These suggestions apply to raceway-mounted signs attached to common wall or roof conditions.

Raceway signs

Stucco Wall with Foam/Wood Backing

Attach through the top tab with at least two 3/8 inch through bolts or all-thread through the wall and backing plate. Add 3/8 inch lag bolts every 30 inches across the bottom and top. For signs over 30 inches tall, change the 3/8 inch lag bolts to 1/2 inch lag bolts. Use a flat washer between each lag head and the raceway flange.

Masonry Wall

Through the top and bottom tabs, install 3/8 inch by 3 inch lags and shields every 30 inches, with at least two in each raceway section top and bottom. For signs over 30 inches tall, change the 3/8 inch lag bolts to 1/2 inch lag bolts. Use a flat washer between each lag head and the raceway flange.

Wooden Wall

Through the top and bottom tabs, install 3/8 inch by 2.5 inch lag bolts or large screws every 30 inches, with at least two in each raceway section top and bottom. Additional through bolts may be needed if the wood surface is not thick enough or does not resist pullout. For signs over 30 inches tall, change the 3/8 inch lags to 1/2 inch lags.

Roof Mount

When mounting through a roof, sealing each penetration against water infiltration is very important. Mount the sign high enough that leaves or snow cannot pile behind it. Brackets should be mounted to the roof with 1/2 inch through bolts and a backing plate between rafters inside the building.

Direct-Mount Letters and Lit Shape Signs

These suggestions apply to EZLit direct-mount signs and self-contained lit shape signs attached through mounting tabs or the sign back.

EZLit letters Lit shapes

Stucco Wall

Letters or logos under 6 square feet can be installed with #10 weather-resistant wood screws through the mounting tabs. The screws must penetrate the wood substrate behind the foam, and the wood must resist pullout. For signs over 6 square feet, use at least two 3/8 inch through bolts with backing material on the opposite side of the wall.

Masonry Wall

Letters or logos under 24 inches tall can be mounted with 3/16 inch Tapcons through the clear mounting tabs. We suggest painting Tapcons with wall-colored spray paint before installation. Larger letters and logos with metal mounting tabs should use 1/4 inch by 3 inch drive pins through each tab, or mount through the back after removing the sign face.

Wooden Wall

Letters or logos under 6 square feet can be installed with #10 weather-resistant wood screws through the mounting tabs. For signs over 6 square feet, use at least two 3/8 inch through bolts with backing material on the opposite side of the wall. Remaining mounting tabs should have #10 wood screws.