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Infinity by Marvin Bay Windows

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Fiberglass Bay Windows for Pleasanton Homes

Infinity from Marvin Bay Windows are an excellent choice for San Francisco Bay Area homes, offering a combination of stunning aesthetics, durability, and energy efficiency that complements the region’s diverse architectural styles. Whether you live in a historic Victorian, a modern hillside retreat, or a classic suburban home, these bay windows provide expansive views and increased natural light. Their thoughtful design allows homeowners to capture breathtaking scenery, from rolling hills and coastal landscapes to vibrant cityscapes.

Designed with Ultrex® fiberglass frames, Infinity from Marvin Bay Windows are built to withstand the Bay Area's varied climate, from foggy mornings to sunny afternoons. Unlike traditional wood windows, they won’t warp, rot, or swell in the presence of moisture, making them an ideal low-maintenance solution for homes exposed to ocean air or seasonal rains. Plus, their energy-efficient glass helps regulate indoor temperatures, reducing heat loss in cooler months and minimizing excess heat during warm summers, which can contribute to lower energy bills.

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These are some great reasons to choose Infinity® from Marvin!

Exceptional Strength

Infinity windows are built with Ultrex® fiberglass, a material that’s up to 8x stronger than vinyl. It resists warping, cracking, and swelling making it ideal for Bay Area homes exposed to wide temperature swings, and long-term sun exposure.

Energy Efficiency

Designed to minimize heat transfer and air leakage, Infinity windows help keep homes cooler in the summer and warmer in the winter. That means improved indoor comfort, reduced energy costs, and dependable performance across Bay Area microclimates.

More Glass

Slim profiles and durable frames allow for larger glass areas, maximizing natural light and views. Whether your home overlooks hills, cityscapes, or landscaped yards, Infinity windows deliver a modern, architectural look without sacrificing strength.

Low Maintenance

Infinity windows are factory-finished for durability and won’t need repainting like wood or frequent replacement like lower-grade materials. Homeowners get long-term value, minimal upkeep, and a window that looks great for decades.

Custom Exteriors is an Exclusive Distributor of the Marvin Infinity Line

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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