If you are planning an exterior project near the coast, choosing the right aluminum is only part of the decision. The finish matters too.
Salt air, humidity, rain, and strong UV exposure can be tough on exterior architectural metals. For condominiums, multifamily buildings, hotels, and commercial properties, selecting the right aluminum system from the beginning can help reduce maintenance and protect the appearance of the building over time.
So, what exactly does “coastal-grade aluminum” mean?
What Is Coastal-Grade Aluminum?
Coastal-grade aluminum is not simply a special type of aluminum. It generally refers to an aluminum system that has been specified and finished for environments with higher exposure to salt, moisture, and humidity.
Aluminum is already a popular material for coastal architecture because it is lightweight, durable, and naturally resistant to corrosion. However, the environment, finish, hardware, fabrication, installation, and maintenance all affect long-term performance.
That is why choosing the right system is more important than simply choosing aluminum.
How Does Salt Air Affect Aluminum?
Properties near the ocean are constantly exposed to airborne salt and moisture.
Over time, salt deposits can accumulate on exterior surfaces and, together with humidity and UV exposure, contribute to finish deterioration, discoloration, or corrosion particularly around scratches, joints, fasteners, and other vulnerable areas.
This doesn’t mean aluminum is a poor choice for coastal properties. In fact, properly specified aluminum is one of the better options for coastal applications.
The key is selecting the right finish and construction details for the property’s level of exposure.
What Finish Is Best for Coastal Aluminum?
There are many options that are right for every project.
- Powder Coating
Powder coating provides a durable finish and a wide range of colors. It can be a good choice for many exterior aluminum applications when the appropriate coating system and preparation are used.
For properties with significant coastal exposure, however, it is important to specify a finish designed for the environment rather than simply selecting a standard powder coat.
- PVDF Coatings
For highly exposed coastal and oceanfront properties, PVDF high-performance coatings can provide enhanced protection and long-term color and finish performance.
At Alenac, high-performance PVDF coatings are available for coastal and oceanfront railing applications.
- Anodized Aluminum
Anodizing creates a protective oxide layer on the aluminum and provides a distinctive architectural appearance. It can be a good option when the design calls for a natural metallic look, although color choices are generally more limited than with painted finishes.
Coastal Aluminum Is More Than a Finish
A durable coastal system depends on more than the coating.
The aluminum alloy, fabrication, fasteners, connections, installation, and maintenance should all be considered.
For example, a high-quality finish cannot compensate for poor installation or unsuitable hardware.
That’s why Alenac approaches coastal architectural metalwork as a complete system, from fabrication and engineering coordination to finishing and installation.
Our aluminum solutions include:
- Aluminum railing systems
- Glass and picket railings
- Screen enclosures
- Architectural louvers and sunshades
- Facades
- Custom architectural metalwork
For demanding coastal environments, we help project teams select finishes and systems based on the property’s specific requirements.
Don’t Forget About Maintenance
Even coastal-grade aluminum benefits from regular maintenance.
Periodic cleaning helps remove salt and other contaminants before they build up. Property owners and managers should also inspect railings, joints, fasteners, and finishes for signs of damage.
Coastal-grade does not mean maintenance-free. It means the system is better prepared for the environment it will face.
The Right Finish Starts With the Right Project
An oceanfront condominium and an inland commercial building don’t necessarily need the same aluminum finish.
The right choice depends on factors such as:
- Distance from the ocean
- Level of salt exposure
- Humidity and weather conditions
- Building location and height
- Desired appearance
- Expected maintenance
- Project budget
Concerned About the Condition of Your Railings?
Whether your building is approaching a milestone inspection or you’re seeing signs of corrosion, movement, or recurring repairs, our team can help evaluate your railing system and recommend the most practical path forward.
Call us at (561) 877-4109 or email [email protected] to schedule a property assessment.
