How Long Do Aluminum Railings Actually Last?

The honest answer

A properly fabricated and finished aluminum railing will last 25 plus years in NJ weather with zero maintenance. Finishes on coastal installs last 15 to 20 years. Poorly prepped jobs fail in 5 years.

What drives lifespan

1. Aluminum alloy: 6061 or 6063 architectural grade is what you want.
2. Wall thickness: 0.080 inch minimum on pickets, 0.125 inch on posts.
3. Finish prep: sandblast or etch, then pretreat before powder.
4. Powder spec: AAMA 2604 minimum, 2605 for coastal.
5. Fastener material: stainless everywhere exposed.

What shortens life

• Thin wall tubing sold online as "cheap aluminum".
• Powder over unprepped anodized surface.
• Ferrous fasteners bleeding rust down the finish.
• Pressure-treated wood contacting aluminum without isolation.
• Lawn chemicals and salt-ice-melt in direct contact.

Warranty to look for

A reputable shop warrants finish for 10 years, structure for 20. We match or exceed these on every job.

When to repaint vs replace

If structural aluminum is intact and only the finish is chalked, you can have the railing removed, stripped, and re-coated. A re-coat costs 40 to 60 percent of a new install. If pitting has started, replace.

Real life example

We have customers in Paramus with aluminum railings we installed in 2001 that still look new. Annual rinse and nothing else. That is what good fabrication buys you.