Are Infinity® from Marvin® windows really low maintenance?

Yes. Infinity® from Marvin® windows are built with Ultrex® fiberglass, a material that does not warp, rot, swell, or require repainting. Homeowners in the East Bay and San Francisco Bay Area enjoy long-lasting performance with minimal upkeep.

Do Infinity® from Marvin® windows resist warping and cracking?

Infinity® from Marvin® windows are engineered with strong, stable Ultrex® fiberglass that resists warping, cracking, and deformation caused by heat, sunlight, and moisture—making them ideal for Bay Area climates.

How long do Infinity® fiberglass windows last?

Ultrex® fiberglass maintains its strength and shape for decades, giving Infinity® from Marvin® windows a significantly longer lifespan than typical vinyl or wood windows. Many Bay Area homeowners see reliable performance well beyond 20–30 years.

Do Infinity® patio doors need painting or refinishing?

No. Infinity® patio doors feature a factory-applied, fade-resistant finish designed to withstand sun, moisture, and temperature swings. They do not require scraping, sanding, or repainting, even in harsh Bay Area exposure.

Are Infinity® windows a good choice for coastal or foggy Bay Area environments?

Yes. Ultrex® fiberglass does not absorb moisture or corrode, making Infinity® from Marvin® windows and patio doors an excellent choice for coastal, foggy, or high-humidity areas such as Alameda, Berkeley, and San Francisco.

Durable, Low Maintenance Windows & Doors

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Windows & Patio Doors for East Bay & San Francisco Bay Area Homes

For homeowners in the East Bay and greater San Francisco Bay Area, durability and low maintenance aren’t just nice-to-have features, they’re essential. Coastal moisture, inland heat, strong sun exposure, and shifting microclimates can take a toll on traditional windows and doors. That’s why Custom Exteriors proudly installs Infinity® from Marvin®, the premium fiberglass replacement window and patio door line engineered to outperform wood, vinyl, and composite products for decades.

Infinity® from Marvin® windows and patio doors are engineered with advanced insulating technology and exceptionally durable materials built to perform in Northern California’s diverse climate conditions. The result is a more comfortable home, reduced energy costs, and consistent year-round performance you can feel every day.

Why Bay Area Homeowners Choose Infinity® from Marvin® for Durability

Homes throughout the East Bay and San Francisco Bay Area face unique climate challenges including; sun exposure, coastal moisture, warm summers, and chilly winter nights. Poorly insulated windows and patio doors are a major source of energy loss, driving up heating and cooling costs.Infinity® from Marvin® products are built with Ultrex® fiberglass, one of the strongest, most dimensionally stable materials in the window and door industry. For homes stretching from Berkeley to San Ramon, Pleasanton to Oakland, and across the San Francisco Peninsula, this stability translates into long-lasting performance regardless of temperature swings, fog, coastal air, or intense summer sun.

This superior strength ensures your windows and patio doors stay square, operate smoothly, and remain energy efficient for years.

No Rotting, Warping, or Swelling — EVER

At the heart of every Infinity® from Marvin® product is Ultrex® fiberglass, one of the strongest, most thermally stable materials available for residential windows and patio doors. This stability ensures your windows and patio doors perform flawlessly for decades, delivering the energy savings you expect.

Infinity® from Marvin® eliminates these issues entirely. Ultrex® fiberglass does not rot, swell, corrode, or distort, even in the most challenging environments. Whether your home faces coastal breezes in Alameda or warm afternoon sun in Pleasanton, these windows and doors stay strong and stable.

NO CRACKING

Unlike vinyl or wood, Ultrex® fiberglass maintains its structural integrity even in extreme temperature swings, preventing the surface from splitting or breaking down over time. This exceptional stability ensures your windows and doors stay strong, smooth, and beautiful.

NO PEELING OR CHIPPING

Unlike painted wood surfaces that break down over time, Ultrex® fiberglass holds its finish beautifully with virtually no maintenance. This means your windows and doors stay looking fresh and smooth without the need for constant touch-ups or repainting.

NO FADING

While many materials lose their color or appear washed out over time, Ultrex® fiberglass maintains its rich, consistent finish for decades. This means your windows and doors will continue to look vibrant and modern, without the need for repainting or refinishing.

Know Your Glass Options

Engineered Glass & Hardware Designed to Endure

Infinity® windows and patio doors aren’t just built with durable frames—the entire system is engineered for long-lasting performance and minimal upkeep. Every component, from the glass to the hardware, is designed to withstand the demands of Bay Area living while maintaining smooth operation and a clean, modern appearance.

Infinity’s advanced glass systems offer superior performance for Bay Area homes. Insulated glass helps reduce fogging and seal failure, while high-quality spacers and sealants preserve energy efficiency over time. These glass packages also resist heat and cold transfer, making them ideal for the region’s varied microclimates, from coastal fog to inland heat.

The hardware is equally durable. Infinity® from Marvin® uses corrosion-resistant materials and precision-engineered locks and rollers that ensure smooth, reliable functionality. Built to withstand years of daily use, these components prevent the sticking, sagging, and rattling that often plague older windows and patio doors. The result is effortless operation and dependable performance for decades.

Ready to choose your new French door?Contact us or visit our showroom in Pleasanton today.

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QUALITY Engineering for DURABILITY

Low Maintenance by Design

Infinity® from Marvin® is designed for homeowners who want less hassle and more time enjoying their homes. Daily maintenance is minimal. There’s no scraping, staining, or painting required, and the glass and frames clean easily with little effort. Tight seals help reduce dirt and dust infiltration, and the durable construction means fewer service calls or adjustments over the life of the product. Instead of spending weekends dealing with peeling paint, swollen sashes, or drafty doors, you simply enjoy long-lasting performance with only occasional cleaning.
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Greater Long-Term Value for Bay Area Homeowners

Significant Long-Term Return

While Infinity® from Marvin® may come with a higher upfront cost compared to basic vinyl windows, the long-term return is substantial, especially in high-value real estate markets like the East Bay and greater San Francisco Bay Area. Homeowners benefit from exceptional durability that lasts for decades, meaning far fewer replacements over the life of the home.

Infinity’s superior construction also reduces repair and maintenance costs, improves energy efficiency, and supports higher resale value. When you consider the long-term savings in time, money, and stress, it becomes clear that Infinity is not just a window upgrade, it's a smart investment designed to deliver lasting value year after year.

With more than 28 years of experience and over 26,000 completed projects throughout the San Francisco Bay Area, Custom Exteriors has earned a reputation for craftsmanship you can rely on. Our installations are built to perform in the region’s diverse microclimates, whether you live in the breezy hills of Lafayette, the warm summer climates of Livermore and Walnut Creek, or the cooler, coastal-influenced neighborhoods of Alameda and Berkeley.

Whether you're upgrading your entire home or replacing a few windows or patio doors, Custom Exteriors is the trusted choice for Bay Area homeowners who expect exceptional energy efficiency and top-tier workmanship. Let us help you create a more beautiful, comfortable, and efficient home with Infinity® from Marvin®.
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Convenient Financing Options

Make your project more affordable with easy financing options. On approved credit.

Financing

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Five-Star Reviews

Read Our Testimonials

"Loved working with Custom Exteriors. Very responsive to inquiries. Precise in their measurements, estimate and timeframe for completion. Highly recommend them."

Brian I.

Tampa, FL

"Custom Exteriors provided a great product and good service in replacing 2 sliding glass doors and 2 other windows in my townhouse. One was a custom window that required extra work in refitting the plantation shutters to the new window. Although there were some bumps along the way, Jeff and his foreman Ryan excelled at follow up. I would recommend Custom Exteriors."

Carole N.

Tampa, FL

"Custom Exteriors did a wonderful job. The installation crew were neat and thorough. My salesman Mark kept me informed about delivery and the windows are beautiful, quiet and warm house. I’m very pleased."

Susan G.

Tampa, FL

"Kevin one of the owners of Custom Exteriors contacted me the following day and immediately tried to make things right. The first thing, I was impressed about was he took my call without hesitation. Many medium sized business will bounce me around to different people before finally being able to talk to the owner. He was an attentive listener and took to the time understand my needs and wants in an exterior entry door.His communication was top notch, sending me estimates the same day or the following day. He gave me choices in fiberglass doors: ProVia and Therma-Tru, hardware: Trilennium vs Emtek, and single point vs multiple point locks. I just ordered a ProVia doors through Kevin. This surprised both to my husband and me. Before contacting Custom Exteriors, we thought we were going to get a Therma-Tru door, but that totally changed once we the information we needed from Kevin. I get the sense that he truly wants to give customers options and information, but respects the customer's final decision. There is not high pressure sale pitch. Kevin wants customers to be informed and happy with the end product."

Hellen K.

Tampa, FL

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