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08/11/2025Will a foam fender still work if it has cuts or dents?
Foam fenders are a popular choice for protecting ships and docks. They’re tough, long-lasting, and require little maintenance. But what happens if your foam fender has some cuts or dents? Do you need to replace it right away? Let’s break it down.
What Is a Foam Fender?
A foam fender is made of a solid foam core wrapped in a tough outer skin, usually polyurethane (PU). The foam inside can compress and absorb energy during impact, which helps protect both the vessel and the dock. Unlike pneumatic fenders, foam fenders don’t need inflation and can’t deflate.
They’re widely used on docks, ports, and ships because they’re reliable and easy to use.

Can a Foam Fender Still Work with Cuts or Dents?
In most cases, yes.
Minor cuts or surface dents don’t usually affect how the fender works. Here’s why:
- The foam inside keeps working. Even if the outside layer is scratched or cut, the inner foam can still absorb impact.
- Small dents bounce back. Foam fenders have “memory.” That means they often return to shape after a bump.
- No air = no leaks. Unlike inflatable fenders, a foam fender won’t stop working just because of a small puncture.
But there are limits. If the damage is deep or reaches the foam core, it might reduce performance. Water might get inside and slowly damage the fender over time.
When You Should Worry
You should inspect your fender if you see:
- A deep cut through the outer layer
- Foam leaking out
- Soft spots that don’t bounce back
- Cracks or bulges that keep growing
These signs may mean the fender is no longer safe or effective.
How to Check and Maintain Foam Fenders
Foam fenders are low-maintenance, but you should still:
- Check them regularly for damage
- Clean off marine growth and debris
- Look for cracks, cuts, or changes in shape
- Contact the supplier if you’re unsure about a repair
Some surface cuts can be patched using a repair kit. But for serious damage, it’s best to ask an expert.
Why Foam Fenders Are Still a Great Choice
Foam fenders are strong, dependable, and built to last. They don’t lose pressure, they bounce back after impact, and they keep working even with minor damage. That’s why many ports and shipowners trust them.
Conclusion: Minor Damage Isn’t a Deal Breaker
If your foam fender has small cuts or dents, don’t panic. In most cases, it will still work just fine. Just keep an eye on it and do regular checks. Foam fenders are tough, and a little wear and tear is totally normal.
FAQ: Foam Fender Damage
Q1: Do I need to replace a foam fender if it has scratches?
A: Not usually. Surface scratches don’t affect how the fender works.
Q2: Will a dent go away on its own?
A: Yes, many small dents will bounce back thanks to the foam’s memory.
Q3: Can I repair a cut in the outer layer?
A: Yes, small cuts can often be patched with the right materials. Contact your fender supplier for advice.
Q4: What if water gets inside the fender?
A: If water enters the foam core, it could reduce performance. In that case, replacement may be needed.
Q5: How often should I inspect my foam fender?
A: It’s a good idea to check every few months, especially if the fender sees heavy use.