Fiberglass patio doors engineered for Tri-Valley living — installed by AAMA Certified Master Installers with 29 years of East Bay experience. See them in our Pleasanton showroom.

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In Pleasanton, Dublin, San Ramon, and Danville, where summer evenings are worth opening up to, that distinction matters. And unlike vinyl or aluminum alternatives, Infinity's fiberglass construction holds its seal, its shape, and its finish through the Tri-Valley's full range of weather, 100°F summers, cold wet winters, and everything in between.

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A door replacement that
changes how you live in your home.

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• Comfort year-round – Failed seals and warped frames let heat in during summer and cold in during winter. A properly sealed fiberglass door holds its thermal performance for the life of the product.
• Lower energy bills – Infinity's Title 24 compliant glass packages are engineered to reduce solar heat gain and minimize thermal transfer — measurable savings on cooling costs in Tri-Valley summers.
• Noise reduction – A tight seal doesn't just keep out heat and cold. Multi-pane glass and precision fiberglass frames reduce exterior noise — meaningful for homes near high-traffic streets.
• Increased natural light – Fiberglass's higher strength-to-weight ratio allows thinner frame profiles and more glass surface — more light into your living space without structural compromise.
• Resale value – Premium fiberglass patio doors are a visible, high-impact upgrade. Buyers notice the difference. The investment typically returns well at resale, particularly at the premium end of the Pleasanton and Danville markets.
• Zero maintenance finish - ColorPlus technology is a factory-applied finish that eliminates repainting, refinishing, and the ongoing cost and inconvenience of maintaining a painted surface over time.

Vinyl is the default choice for most contractors. It's cheaper upfront and easier to sell on price. But in a climate with 100°F summers and cold wet winters, which describes Livermore, San Ramon, and the entire Tri-Valley, vinyl's material properties work against it over time.

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Vinyl expands and contracts at nearly three times the rate of the glass it holds. That difference is what causes seals to fail, tracks to warp, and doors to stick, usually 8 to 12 years into a product that should last 30. Infinity's fiberglass frames expand at nearly the same rate as the glass itself. The seal holds. The door operates smoothly. For decades.

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• Expansion matched to glass  - Fiberglass and glass expand at nearly the same rate — the defining reason fiberglass seals outlast vinyl seals in wide temperature-swing climates.
• Factory ColorPlus finish - Applied before the door leaves the plant. Resists fading, chipping, and moisture absorption. No repainting on your calendar - ever.
• Title 24 compliant glass packages - Multiple glass options engineered to meet California's strict energy compliance standards without sacrificing natural light or views.
• 120-year Marvin engineering pedigree Infinity is Marvin's fiberglass line. Every product carries the engineering standards of a manufacturer that has been building windows and doors since 1912.

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