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How to remove aluminum windows?

Struggling with hard-to-remove aluminum windows wastes precious time and jeopardizes your renovation results. Learning the right approach will save effort, prevent costly mistakes, and protect your property.

To remove aluminum windows, first clear the area, use the right safety gear, identify how the window is fixed (sash or frame), then carefully unscrew, pry, and lift out the window or glass.

Person removing an aluminum window using basic hand tools
Removing Aluminum Window Safely

Before you start, let’s ensure you understand if your specific challenge is full replacement, glass repair, or just taking out the sash. With the right insights, you'll be ready for any window update project.

Can aluminium windows be replaced?

Thinking your old aluminum windows are holding your building back? You're not alone—outdated frames leak energy and can look worn. But modern aluminum options offer performance and aesthetics upgrades.

Yes, aluminum windows can be replaced entirely—either by swapping both frame and sash, or just the sash if the frame is still in good condition.

Modern and old aluminum windows side by side
Comparison of Old and New Aluminum Windows

Understanding Replacement Options

There are two main approaches to replacing aluminum windows:

Replacement Type When to Use Procedure Highlights
Full Frame1 Frames/glass are damaged or poor insulation; changing material (e.g., to uPVC/vinyl) Remove frame & sash completely, often involves cutting out nailing flanges/trim
Sash Only2 Frame is in good shape; tight budget Only operating part (sash) is swapped—frame stays fixed

Key considerations:

  • Accurate measurement is vital—subtract 1-2 inches for easier fitting.
  • For energy and sound performance: upgrade to modern aluminum with a thermal break and double/triple glazing.
  • As a manufacturer, I always recommend custom-fit replacements and high-quality sealing for long-term peace of mind.

Can you replace just the glass in an aluminum window?

Dealing with cracked or foggy glass but the frame is solid? It may feel daunting, but you don’t always need a whole new window.

Yes, you can replace just the glass in most aluminum windows, a cost-effective fix when the frame remains sound.

A gloved hand fitting new glass into an aluminum window frame
Replacing Glass in Aluminum Frame

Steps for Glass-Only Replacement

Here’s the approach I give my own customers:

Step Description
1. Safety First Gloves and goggles on—remove all broken glass.
2. Remove stops/bead Use a screwdriver or putty knife—keep hardware safe
3. Measure precisely Glass needs to be ~1/16” smaller than frame opening
4. Clean, then insert Ensure frame clean—set glass, seal with silicone
5. Reinstall stops Snap or screw stops back, check seal & alignments

Remember, double glazing3 usually requires professional sealing to avoid moisture infiltration. For older windows where glass thickness is nonstandard, replacement glass may need to be custom-ordered4—something manufacturers like us handle often.

Can you remove a window without removing the frame?

Want to upgrade or fix your window but worried about damaging walls or siding? The good news—full removal isn’t always necessary!

Yes, you often can remove the window sash or glass from an aluminum unit without taking out the full frame, simplifying repairs.

Contractor removing only the sash from an aluminum window
Sash Removal from Aluminum Frame

When and How to Remove Only the Sash or Glass

Window Type Removal Technique
Sliding Sash5 Remove sash stop, then lift sash up and out
Fixed Pane6 Pry out glazing bead or seal and lift glass

This approach:

  • Reduces impact on surrounding walls/trim (great for quick fixes or when working in finished spaces).
  • Works for repairs (broken glass) or upgrades, as long as frames aren’t rusted or damaged.
  • For developers or dealers, this flexibility means you can offer clients more targeted, cost-effective renovation options.
  • Full frame removal is only necessary when replacing with a new window that requires new install flanges or sealing system.

How do you remove an old aluminum window sash?

Nothing tests your patience like a stubborn, corroded old sash! Knowing the right steps will spare your fingers, your time, and your sanity.

To remove an aluminum window sash: open the window, locate sash stops or screws, remove fasteners, tilt and lift the sash free, and handle carefully.

Step-by-step view of removing an aluminum sash: tools, close-up on screw removal, sash being lifted out
Step-by-Step Aluminum Sash Removal

Practical Steps and Cautions

Step Practical Tip
Prepare tools Screwdriver, putty knife, gloves, goggles
Open & inspect Fully open the sash. Look for screws or clips
Remove fasteners Carefully unscrew or pry off stops/clips
Lift sash Tilt lower edge inward, gently lift out of track
Assist & protect Large/heavy units: get help; watch glass edges

If the sash won’t budge (corroded or sealed), apply penetrating oil7, or heat with a gun. Use extra caution to avoid breaking old glass or damaging the frame—if in doubt, reach out to specialists8. I’ve seen even simple jobs get tricky with older caulking or surprise fasteners!

Conclusion

Removing aluminum windows or their components isn’t mysterious—it's about knowing your options, using the right tools, and working safely every step of the way.



  1. Explore this link to understand the Full Frame method, its benefits, and when it's the best choice for your window replacement needs. 

  2. Discover the Sash Only replacement method, ideal for budget-conscious homeowners, and learn how it can save you money while maintaining quality. 

  3. Explore this link to understand the benefits of double glazing, including energy efficiency and moisture control. 

  4. Learn about the process of ordering custom glass, ensuring a perfect fit for your unique window needs. 

  5. Explore this link to learn the most effective methods for removing sliding sash windows safely and efficiently. 

  6. Discover expert tips on safely removing fixed pane windows, ensuring a smooth renovation process. 

  7. Explore this link to discover effective penetrating oils that can help you easily remove stuck window sashes. 

  8. Learn why consulting specialists can save you time and prevent damage during window sash removal. 

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Hi there! I'm Thea, mom and hero to an adorable 5-year-old boy. By day, I'm a seasoned pro with 10 years in the window and door industry, going from sales to owning my own factory. Here to share what I've learned—let's grow together!

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