Sandwich Board Insert Materials for Rain, Sun, and Daily Sidewalk Use

Choosing the right sandwich board insert material is critical for any business that relies on sidewalk signs to attract attention every day. The material you select affects how your sign looks after rain, sun, and repeated daily use. Picking the wrong panel can lead to faded graphics, warped inserts, and unnecessary replacement costs. The best options are simple, practical, and easy to order from a trusted provider like Legit Fast Printing.

Definition: Sandwich Board Inserts

A sandwich board insert is the removable sign panel that fits into an A-frame or sidewalk sign stand. These inserts are typically printed with your custom design and can be swapped out to update your message or promotion.

Best Material for Rain, Sun, and Daily Sidewalk Use

For nearly all outdoor sidewalk scenarios, the recommended material is 4 mm corrugated plastic (coroplast). This material is waterproof, resists fading, and stands up to both sunlight and wet weather. Corrugated plastic is the same trusted material used in custom yard signs, making it familiar, affordable, and easy to order in standard sign sizes.

• Waterproof: Coroplast does not absorb water, so it won’t warp or delaminate after a downpour.
• Sun resistant: When printed with UV-resistant inks (standard at Legit Fast Printing), your graphics stay bright longer, even in strong direct sunlight.
• Sturdy selection: 4 mm thickness is ideal for most common sandwich board frames while staying lightweight for daily setup and breakdown.
• Cost-effective: Easy to replace for new promotions without the expense of a full new sign frame.

Other Insert Materials and When to Use Them

Several other materials are available for sandwich board inserts, but each comes with its own strengths and limitations. Understanding these helps you make the right decision for your location and climate.

Rigid PVC Plastic

• Good for a smooth, high-end look.
• Water-resistant, but can warp under extreme heat if left in direct sun for long periods.
• Generally heavier than coroplast, which can help with stability but may make frequent moving harder.

Foam Board

• Smooth and lightweight, best for indoor or one-day use only.
• Not weatherproof: absorbs moisture, warps, and discolors rapidly outdoors.
• Avoid for everyday sidewalk use.

Aluminum or Metal Composites

• Extremely durable and weather-resistant, suitable for year-round outdoor use.
• Heavier and more expensive up front.
• Best for fixed, long-term applications where you rarely update the message.

Step-by-Step: How to Choose the Right Insert

1. Confirm your frame size and slot thickness. Most plastic frames take 4 mm thick inserts, commonly in 24x36 inch size.
2. Assess the environment. If your board sits outside daily, prioritize weather resistance and sun protection.
3. Pick coroplast for outdoor daily use. Only select foam board if your sign will stay inside.
4. Request UV-resistant inks. This will help your design resist fading over many months of sun exposure.
5. Order from a trusted source. Legit Fast Printing can help match your frame to the right insert size and material.

Common Sandwich Board Insert Sizes

• 24 x 36 inches (common standard for many A-frame boards)
• 18 x 24 inches (also widely used for smaller promotions)
• Custom sizes available—always measure your frame’s slot area if unsure.

Placement and Daily Use Tips

• Bring your sandwich board indoors after business hours to maximize lifespan and prevent vandalism.
• If your business is in a windy area, fill your plastic frame with water or sand for added weight, or place sandbags at the base of metal frames.
• Place the sign in a spot visible from at least 30 feet, but avoid blocking foot traffic or placing the sign where it will get repeatedly hit by lawn sprinklers.
• To clean, use mild soap and water on the coroplast surface, avoiding harsh solvents unless your insert includes a protective laminate.

How Many Inserts Should You Order?

• For most small businesses, order at least two inserts per board so you have a backup or seasonal alternative ready.
• If you frequently change promotions or run recurring events, order multiple sets so you’re never left without a clear, undamaged sign.
• If you run several sidewalk boards at once, bundle your order for quantity savings. Legit Fast Printing offers bulk discounts on custom sign orders.

Best Practices for Outdoor Sandwich Boards

• Use bold, high-contrast colors and keep your message concise and easy to read from a distance.
• Choose double-sided printing to capture both directions of foot or vehicle traffic.
• Make sure your artwork is high resolution and uses legible fonts to maximize impact.
• If you need help designing your sign, Legit Fast Printing offers assistance to ensure your artwork looks great in print. Visit our Choose Your Own Design page for details.

FAQs: Sandwich Board Insert Materials

Quick Links to Related Guides and Product Pages

• Custom Sandwich Board Signs for Storefronts, Pop Ups, and Events
• Which Printing Service is Best for 24x36 A-frame Sign Inserts That Need to Look Professional Outdoors
• What is the Easiest Way to Print Sandwich Board Inserts for a Sidewalk Sale or Weekend Event?

Summary and Next Steps

Choosing 4 mm corrugated plastic for your sandwich board inserts is the safest, most practical approach for outdoor sidewalk signs. It delivers durability, weather resistance, and vibrant graphics in all common sizes. If you plan to update your message seasonally or want to be sure your sign stands up to rain and sun, choose coroplast inserts from a provider experienced in outdoor printed signage.

Ready to upgrade or replace your sandwich board inserts? Explore customizable options or get expert help sizing your signs at Legit Fast Printing—your trusted partner for outdoor signage that gets your message noticed every day.