Insulated Glass Replacement in Portland, OR
Fogged, failed, or broken dual-pane windows? We replace insulated glass units (IGUs) without replacing the entire window — saving you hundreds of dollars.
Licensed Portland glaziers. Free estimates. OR CCB# 261682.
Signs Your Insulated Glass Has Failed
Portland's wet climate and temperature swings are hard on window seals. Here's how to know when it's time to replace your IGUs.
Fogging or Condensation Between Panes
The most obvious sign — moisture or fog trapped between the glass layers means the seal has failed and the insulating gas has escaped.
Drafts Near Windows
If you feel cold air coming through a closed window, the IGU may be failing or the frame seal is compromised.
Higher Energy Bills
Failed IGUs lose their insulating value. If your heating or cooling costs have increased, old or failed windows may be the cause.
Ice on Interior Glass
Ice forming on the inside of your windows in winter is a sign of very poor insulation — usually single-pane or severely failed IGUs.
Visible Cracks or Chips
Any crack or chip in an IGU compromises the seal and insulating value. Even small damage should be addressed promptly.
IGU Replacement vs. Full Window Replacement
IGU Replacement — $150–$500/window
Best when the frame is in good condition
- Frame is solid and undamaged
- Window opens and closes properly
- No rot or warping
- Window is less than 20 years old
- You want the most cost-effective fix
Full Window Replacement — $500–$1,200/window
Better when the frame needs upgrading
- Frame is rotted, warped, or damaged
- Single-pane windows (no insulation)
- Window is 20+ years old
- Upgrading to triple-pane or better
- Multiple windows need updating
Frequently Asked Questions
How do I know when my insulated glass has failed?
The most common sign is fogging or condensation between the glass panes — this means the seal has failed and the argon gas has escaped. Other signs include drafts near closed windows, higher energy bills, ice on interior glass in winter, and visible cracks or chips in the glass.
Can you replace just the insulated glass unit without replacing the whole window?
Yes, in most cases we can replace just the insulated glass unit (IGU) without replacing the entire window frame. This is significantly less expensive than full window replacement. We measure the existing unit, order a replacement, and install it in the existing frame. This works when the frame is in good condition.
How much does insulated glass replacement cost in Portland?
Replacing an insulated glass unit (IGU) in Portland typically costs $150–$500 per window depending on size and glass type. This is much less than full window replacement ($500–$1,200). We provide free estimates — call (503) 887-8329.
What is argon gas and why does it matter?
Argon gas is an inert gas used to fill the space between panes in insulated glass units. It is denser than air and provides better insulation than air alone. When the IGU seal fails, the argon escapes and is replaced by regular air, reducing the window's insulating value. Replacement IGUs are filled with argon gas to restore full insulating performance.
Do you service insulated glass throughout the Portland metro area?
Yes, we replace insulated glass units throughout Portland, Beaverton, Hillsboro, Tigard, Lake Oswego, Gresham, and surrounding communities. Call (503) 887-8329 for a free estimate.
Fix Your Insulated Glass Today
Free estimates. Most IGU replacements completed in 1–3 days. Licensed Portland glaziers.