Winona Powder Coating provides high-performance powder coating for architectural aluminum extrusions, metal building components, storefront systems, curtain walls, windows, doors, railings, sunshades, panels, and other products that must perform and look their best for years outdoors.

High-Performance Architectural Coatings for Aluminum and Metal Building Components

Architectural products face a challenging combination of UV exposure, moisture, temperature changes, pollution, physical handling, and long-term appearance expectations. To that end, the applied coating does a lot more than add color. It also has to protect the substrate, resist corrosion and weathering, and meet the performance level specified for the project.

Winona is an approved applicator of AAMA 2603, 2604, and 2605 architectural powder coatings for AkzoNobel, Axalta, and IFS. We give architects, fabricators, manufacturers, contractors, and project owners access to certified coating options for all conditions, from protected interior components to high-durability exterior applications.

Architectural Finishes Built for Long-Term Performance

A high-quality architectural finish begins with more than the powder itself. Surface preparation, pretreatment, application consistency, film thickness, curing, inspection, material handling, and packaging all affect the final coating’s performance.

Winona applies architectural powder coatings through controlled processes designed to support consistent quality across commercial and industrial production programs.

Long-term color and gloss retention
High resistance to UV exposure and weathering
Corrosion resistance in wet, humid, urban, industrial, or coastal environments
Durable finishes that withstand handling, transportation, installation, and everyday wear
Consistent color and appearance across large production runs
A broad selection of colors, gloss levels, textures, and finish options
Coatings that meet applicable AAMA performance specifications
Certified application for projects requiring manufacturer-backed warranty coverage

Our team works with customers to match the coating specification to the project’s exposure conditions, aesthetic requirements, warranty needs, substrate, fabrication process, and expected service life.

Why AAMA Certification Matters

The AAMA 2603, 2604, and 2605 specifications establish recognized performance standards for organic coatings used on aluminum extrusions and other architectural metal components. These standards evaluate properties such as weatherability, color retention, gloss retention, humidity resistance, salt-spray resistance, and overall coating durability.

For projects that specify AAMA-grade coatings, using the correct powder is only part of the requirement. The coating also needs to be applied by an approved applicator under qualifying process controls. Many powder manufacturers require certified application before extending their coating warranty.

Winona’s AAMA-approved status gives customers confidence that their architectural powder coating is applied through a documented, quality-focused process. Our certification is supported by ongoing audits, process verification, and a quality management system built to deliver consistent results. Winona is also ISO 9001:2015 certified.

Selecting the Right AAMA Specification

Not every project requires the same coating-performance level. The right specification depends on whether the product will be used indoors or outdoors, the expected UV and moisture exposure, proximity to saltwater or industrial pollutants, required warranty coverage, and how long the finish must retain its appearance.

Specification	Typical Performance Level	Common Applications
AAMA 2603	Basic performance for protected or lower-exposure applications	Interior window systems, ceiling panels, protected architectural components
AAMA 2604	High-performance exterior durability	Commercial storefronts, window and door systems, curtain wall components, moderate-exposure exterior products
AAMA 2605	Superior weatherability for the most demanding environments	Premium façades, high-rise curtain walls, coastal projects, infrastructure, and severe exterior environments

AAMA 2604 coatings are subjected to five years of Florida outdoor exposure testing, plus 3,000 hours of humidity testing and 3,000 hours of salt-spray testing. AAMA 2605 raises the performance threshold further, including 10 years of Florida exposure testing, 6,000 hours of humidity resistance, and 4,000 hours of salt-spray testing.

For applications exposed to intense sun, coastal salt, frequent moisture, severe weather, or long-term appearance requirements, AAMA 2605 coatings provide the highest level of architectural powder-coating performance.

The Advantages of Powder Coating in Architectural Powder Applications:

Durable Exterior Protection

Architectural powder coatings create a durable barrier against outdoor exposure, helping aluminum and other compatible metal components withstand sunlight, moisture, humidity, corrosion, pollutants, and normal handling throughout the product lifecycle.

The right coating system helps preserve the appearance of storefronts, façade systems, railing components, louvers, shades, panels, and other building products that remain visible for years after installation.

Color, Gloss, and Texture Flexibility

Powder coating provides broad flexibility for architectural color and finish requirements. Customers can select from a wide range of colors, gloss levels, metallic effects, textures, and specialty finishes to support the project’s design vision and performance needs.

This makes powder coating a practical solution for projects that need both architectural durability and a distinctive, consistent visual finish.

Strong Edge Coverage

Powder coating naturally builds on edges and corners, helping protect areas that are often vulnerable to corrosion and wear. This can be especially important for fabricated architectural components that will be transported, handled, assembled, and installed in the field.

Lower VOC Process

Unlike traditional solvent-based liquid coating processes, powder coating contains no volatile organic compounds. This supports a cleaner finishing process and can contribute to environmental goals associated with modern building and manufacturing projects.

Improved Resistance to Handling Damage

Architectural components are often moved repeatedly between fabrication, finishing, shipping, jobsite staging, and installation. High-performance powder coatings can offer strong resistance to scratching, abrasion, and mar damage, helping reduce the risk of visible finish issues before the project is complete.

Architectural Applications Winona Supports

Winona coats a broad range of architectural aluminum and metal products for commercial, institutional, civic, retail, hospitality, transportation, recreational, and mixed-use projects.

Some of our regular architectural applications include:

Aluminum storefront and entrance systems
Curtain walls and façade components
Window and door frames
Architectural aluminum extrusions
Exterior metal panels and cladding components
Railings, handrails, gates, and fencing
Sunshades, louvers, canopies, and awnings
Soffit, trim, and decorative building components
Outdoor site furnishings and landscape structures
Signage, wayfinding systems, and branded exterior structures
Transit shelters, platform components, and public-infrastructure products
Stadium, civic center, retail, and hospitality components

Of course, many of these products require the same long-term weatherability and finish retention associated with AAMA-rated coatings, even when they are not part of a conventional storefront or curtain wall system.

The Winona Advantage for Architectural Coatings:

Approved AAMA Applicator

Winona is approved to apply AAMA 2603, 2604, and 2605 architectural powder coatings from AkzoNobel, Axalta, and IFS. This allows customers to select the appropriate performance tier for their project while working with a certified application partner.

Architectural Coating Expertise

Our team understands that architectural coating requirements go beyond basic color selection. We help customers account for environmental exposure, finish expectations, coating specification, warranty requirements, substrate type, fabrication sequence, and production needs.

Consistent Quality Systems

Winona maintains an ISO 9001:2015 quality management certification and supports its architectural coating work with documented process control and quality-focused inspection practices.

Open Capacity for Ongoing Programs

Architectural product manufacturers and fabricators need a coating partner that can support both current production needs and future growth. Winona has the capacity and finishing expertise to serve recurring production programs, specialty components, and large-scale commercial requirements.

One Partner for Related Coating Needs

In addition to architectural powder coating, Winona offers powder coating, E-coating, pretreatment, packaging, and delivery support. Customers with mixed product lines can work with one finishing partner across architectural, commercial, industrial, agricultural, transportation, and other metal-product applications.

Custom Quote, Project Review, or Sample Run for Architectural Coatings

Whether you need an AAMA 2603, 2604, or 2605 coating system, Winona can help identify the right finish for your project. We’ll work with your team to review the part material, dimensions, application environment, exposure conditions, color and appearance expectations, warranty requirements, fabrication needs, and production volume.

Reach out to receive a custom quote for your project. Talk to Winona’s experts for a detailed project review. We can even provide free product samples or test runs to show you what Winona’s superior quality looks like.

Architectural Powder and E-Coating – AAMA Approved Applicator