Aluminum Windows, Roll Form vs Extruded. Which Is Better? Marvin Windows & Doors Available at Kuiken Brothers in NJ & NY

Often, we are asked why Marvin Windows are more expensive and if they are worth the extra money. The answer is they are more expensive because they are designed and built better. There are many examples of this, but we think the picture below shows a clear difference. Marvin extruded aluminum on the left, roll-form aluminum on the right.

Roll Form vs Extruded Aluminum Windows - Kuiken Brothers Marvin Windows-001

If you are ready to make an investment in windows, consider the overall structure of the window – sometimes it is what you don’t see that really matters. Marvin’s extruded aluminum is substantially stronger than roll-form (coil) aluminum. Marvin’s cladding is so strong, it exceeds the American Architectural Manufacturers Association’s toughest specification (2605-05) for aluminum cladding. This specification requires both extruded aluminum and a 70% Kynar finish.

Here is another way to explain the difference between Marvin Windows extruded aluminum and other available finishes:


Marvin Clad (above) – Marvin’s extruded aluminum cladding offers strength and durability that roll-form and vinyl clad windows can’t offer. The difference in strength is similar to the difference in the thickness of an industrial chair versus an inexpensive lawn chair.


Roll-Form (above) – Roll-form aluminum isn’t much thicker than a soda can. It is easily bent and damaged. Most windows using roll-form aluminum come standard with a less expensive paint coating that can easily fade, chalk and scratch.


Vinyl (above) – Vinyl expands and contracts due to heat and cold. Couple this issue with the damaging effects of UV light, and the vinyl will eventually chalk and fade. The weather’s constant climatic attack breaks down vinyl, leaving a brittle, faded shell behind.

Source: Marvin Windows & Doors

If you would like to learn more about Marvin Windows for an upcoming project, we invite you to visit Kuiken Brothers Millwork Showrooms, which were built to be an extension of our builder, remodeler, architect and designer customers’ business. Check out the “Our Showroom, Your Showroom” video below.

Get More Value When You Choose Marvin from Kuiken Brothers!

Kuiken Brothers is the preferred local source for Marvin Windows & Doors for many reasons. We’re confident in our ability to provide you with the best experience from our award winning showrooms, through our experienced and knowledgeable millwork specialists and in-the-field consultations.

Here are just a few of the reasons why building professionals choose Kuiken Brothers as their go-to-source for Marvin Windows & Doors.

Kuiken Brothers Showrooms

Kuiken Brothers showrooms were built to be an extensions of our builder, remodeler, architect and designer customer’s business. Featuring inspirational, lifestyle installations, our Showrooms are the ideal location to meet with clients in advance of a project where a umber of major decisions can be made. The staff at Kuiken Brothers is happy to walk you through the options that are readily available from our inventory, and supported by a local business should anything come along.

When you enter a Kuiken Brothers Showroom you will not find a hard sell from our sales team. We are on-staff to provide a relaxing, consultative environment for you and your clients. We will guide you through our showroom and answer and questions you may have. Please visit us at your convenience. While appointments are not required, we do recommend that you contact us in advance so that we are able to provide you with a personalized experience.

Professional and Courteous Delivery

We hope to see you soon, whether you are looking for inspiration for your dream project, or right in the middle of a project and need to make quick product decisions and selections. We hope to see you soon!

Find a Kuiken Brothers Millwork & Cabinetry Showroom Near You

Typical Showroom Hours*:

7am – 4pm Monday through Friday
8am – 12pm Saturday
Closed Sundays

Please feel free to call in advance to ensure a specific product that you are looking for is on display. Our showrooms are in close proximity to one another, so if one showroom does not have a specific product on display, chances are we can direct you to a local one that does. For a list of phone numbers, click here.

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