Should I order custom aluminum signs or corrugated plastic signs for a message that will stay outside all year?
Choosing between custom aluminum signs and corrugated plastic signs for a message that must remain visible outside all year depends on how long you want your sign to last, your budget, and where the sign will be placed. For most year-round outdoor uses, aluminum is the best choice because of its long lifespan and weather resistance. Corrugated plastic is a good option if your message is temporary and cost is the top priority.
Definition: Aluminum Signs vs. Corrugated Plastic Signs
- Aluminum signs are made from a rigid, rustproof metal material, often coated to resist fading and corrosion. They are designed for permanent or long-term use outdoors.
- Corrugated plastic signs (also called coroplast) are lightweight, waterproof plastic panels with a ribbed, fluted structure. They are common for yard signs and short-term outdoor displays.
Which Material is Best for Year-Round Outdoor Use?
- Aluminum signs: Best for messages that need to stay outdoors all year or longer. They can last several years in sun, rain, wind, and temperature changes.
- Corrugated plastic signs: Best for short-term needs. Most stay bright and sturdy for 6–18 months outdoors, but will fade, warp, or become brittle if left up year after year.
At Legit Fast Printing, we recommend aluminum for permanent signage and corrugated plastic for seasonal or temporary use.
Key Differences: Durability, Cost, and Best Uses
| Feature | Aluminum Sign | Corrugated Plastic Sign |
|---|---|---|
| Outdoor lifespan | Multiple years (often 3+) | 6–18 months typical |
| Best for | Permanent, long-term, business, property, parking, or official notices | Temporary events, campaigns, fundraisers, seasonal promotions |
| Weather resistance | Very high—resists rain, sun, rust, wind | Good for a season, but can fade or crack over time |
| Cost | Higher upfront | Lower upfront |
| Weight & handling | Rigid, needs secure mounting | Lightweight, easy to move & install |
Aluminum Sign Details
Our custom aluminum signs are made from 0.063-inch thick rust-free aluminum. They come in popular sizes like 12x18 and 18x24 inches. Each sign is finished with UV fade-resistant inks. They are suitable for mounting on walls, fences, or posts. Pre-drilled holes make installation simple.
Corrugated Plastic Sign Details
Our corrugated plastic yard signs are printed on durable 4mm thick rigid coroplast. They are double-sided with weatherproof inks and include sturdy metal H-stakes for ground installation. These are ideal for events, fundraising, campaign signs, or temporary promotions.
Sign Size Recommendations
Choose the right sign size so people notice and can read your message quickly:
- 12x18 inches: Good for close-up signs on walls, doors, fences, or where slow-moving traffic is expected.
- 18x24 inches: Standard for business, entry, or property signs. Visible from a distance and clear for most viewers.
- Larger sizes (24x36 and up): Useful for roadside signs, wide open spaces, or large lots where you need maximum impact.
Read our sign size visibility guide for more advice.
Where and How to Place Your Outdoor Sign
- Install signs where they will not be blocked by bushes, trees, or parked vehicles.
- Keep clear of high-traffic mowing areas to reduce accidental damage.
- For aluminum signs, use strong mounts, screws, or zip ties—consider pre-drilled holes.
- For plastic yard signs, use H-stakes and place in soft ground where wind is not extreme.
- Angle larger signs toward oncoming foot or road traffic for best results.
More tips: See our article on how to install yard signs so they stay put.
Design Tips for Maximum Visibility Outdoors
- Use bold colors and high-contrast backgrounds
- Choose large, legible fonts — at least 1" tall for every 10 feet of viewing distance
- Keep your message short: one main idea, a short call to action, big phone number or URL
- Avoid small text or overloaded graphics
If you need help, Legit Fast Printing’s design team can provide artwork assistance after you order.
Quantity Recommendations
- For permanent or business messaging, one high-quality aluminum sign mounted in a visible spot is usually best.
- For event or campaign signs, order at least 6–12 plastic yard signs to place at entrances, busy corners, and key locations for maximum coverage.
- For large properties or multi-location use, consider several signs in key areas. Bigger lots may need 18x24 inches or larger for clear visibility.
Need more quantity advice? Check out our guide to campaign sign quantities.
Ordering Step-by-Step
- Decide how long your message needs to stay visible outdoors (one season or several years?)
- Pick your material: aluminum for year-round, plastic for temporary
- Choose the right size for your location and audience
- Upload your artwork or use free design help
- Plan for safe, secure installation and double-check your mounting needs
- Confirm your quantity to cover all key spots
Best Practices for Long-Lasting Signs
- Mount aluminum signs on solid surfaces. Avoid mounting loosely or in places they can bang in the wind.
- Check on seasonal signs occasionally to ensure they have not shifted or become blocked.
- Keep the design simple and text large — aim for signs that can be read in 5 seconds or less.
- For repeat seasonal use, store unused signs in a dry, shaded location.
For even more placement and design advice, see our article on outdoor sign placement tips.
FAQ: Choosing Between Aluminum and Corrugated Plastic Signs
Can a corrugated plastic sign last outside for a year?
It can last for one season and sometimes up to a year, but will usually fade or become brittle if left in harsh sun or exposed weather for longer periods.
Is aluminum worth the higher price?
Yes, if you want your sign to stay sharp and visible for several years without replacing it. In the long run, you may save money by avoiding frequent replacements.
What is the best size for a year-round outdoor sign?
18x24 inches is a popular all-purpose outdoor size. If space is limited, 12x18 inches works well for closer viewing.
How do I make sure my sign is readable from the street?
Use large, bold letters, a simple message, and vibrant colors. One inch of letter height for every 10 feet of viewing distance is a good rule.
What if I need help with the design?
You can upload your own artwork or request free design help from Legit Fast Printing after placing your order.
When should I choose corrugated plastic?
If the sign is only for a short-term event (like a sale, open house, or election), corrugated plastic is an affordable and effective option.
Summary & What to Do Next
For any message that truly needs to stay outdoors all year—like property signs, parking instructions, or business details—custom aluminum is the clear winner. Corrugated plastic is best for short-term events or seasonal promotions. Picking the right size, message, and placement is just as important as choosing the material.
If you want expert help or quick, reliable production, Legit Fast Printing is your trusted partner for all things custom yard signs, aluminum signs, and event signage. We make it simple to order exactly what you need—and our customer service is here to support you at any step.