Window Materials

Aluminum Windows

Old single-pane aluminum is what many East Bay homes are replacing. But modern thermally improved aluminum is a different product: the same slim frames that mid-century and modern homes were designed around, with a thermal break that stops the sweating and heat loss.

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What It Is

Slim Frames With a Thermal Break

Aluminum is strong, so frames can be very thin and openings very large. The weakness of old aluminum windows was that metal conducts heat, which is why they felt cold, dripped condensation and let summer heat in.

Thermally improved aluminum puts an insulating barrier inside the frame to break that path, and pairs it with dual-pane Low-E glass. It’s the right choice when the architecture calls for thin metal lines.

Bedroom with slim Milgard A250 aluminum windows
Pros and Cons

Is Aluminum Right for Your Home?

The honest trade-offs, from the crew that installs them.

Why people choose them

  • ✓The thinnest frames and largest glass
  • ✓Right look for mid-century and Eichler-style homes
  • ✓Strong and durable
  • ✓Many powder-coat colors
  • ✓Used in moving glass walls

Worth knowing

  • •Insulates less than vinyl or fiberglass, even with a thermal break
  • •Not the best value for a typical stucco home
  • •Choose carefully in very hot rooms
East Bay Homes

Where Aluminum Works Best in East Bay Homes

Where we recommend it most.

Mid-century and Eichler-style homes in Walnut CreekKeeps the original lines
Modern homes with walls of glassThinnest frames
Big moving glass wallsStrength for large panels
Contemporary remodels in Orinda and LafayetteCrisp metal look
Homes replacing old aluminum like-for-likeSame look, better comfort
Commercial-style loftsIndustrial look

See how we approach homes in Walnut Creek, Orinda, Lafayette, Oakland.

Brands We Install

Aluminum Windows From the Brands We Install

Our aluminum options.

Milgard A250 thermally improved aluminum windows and sliding doors, plus AX450 and AX650 aluminum glass walls. Milgard options →
Keep Exploring

Related Windows and Materials

Compare other options before your estimate.

Vinyl windows → Fiberglass windows → Wood windows → Wood-clad windows → Casement windows → Double-Hung windows → Sliding windows → Picture windows → All brands we install →
Common Questions

Aluminum Window FAQ

Straight answers from the people who install them.

Old single-pane aluminum, yes. Thermally improved aluminum with dual-pane Low-E glass is a big step up, and it’s the right choice when you want to keep thin metal frames.
For most stucco ranch homes, vinyl is the better value and insulates better. Aluminum makes sense when the home’s design depends on slim frames.
Much less. The thermal break and dual-pane glass keep the inside surfaces warmer, which is what stops condensation.
Powder-coat finishes in many colors, from classic black, bronze and white to custom shades.
It depends on the brand, series, size, style and glass, and on how many windows you’re replacing. We measure first and give you a fair, detailed written quote for free, and the quote is the price you pay.

Free estimate · No obligation

Get a Free Quote on Aluminum Windows

Tell us which windows you want to replace. Alex or Leon will measure, help you choose the style, brand and glass, and send a fair written quote. We usually reply within 48 hours.

  • Free, no-pressure estimates
  • Our own crew, no subcontractors
  • 5.0 on Google, 28 reviews
  • 4-year workmanship warranty

Prefer to talk? Call or text (925) 393-3578

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