Cost Guide
Understanding double pane window costs in Washington DC, Northern Virginia, and Maryland. Insulated glass units, Low-E options, and energy-efficient upgrades.
Failed seals, foggy windows, and old single-pane glass all benefit from double pane replacement. We offer both glass-only IGU replacement and full window replacement.
What Affects Price
Double pane window pricing depends on several variables. Here is what determines your cost.
Replacing just the insulated glass unit (IGU) in an existing frame costs less than replacing the entire window with frame.
Standard clear double-pane is the base price. Low-E coatings, argon gas fill, tinted glass,
Larger insulated glass units cost more for both the glass and installation. Custom sizes and non-standard dimensions require special ordering.
Standard aluminum spacers are the most affordable. Warm-edge spacers (stainless steel, foam, silicone) reduce edge condensation and improve thermal performance.
Multi-window replacement projects benefit from volume pricing. Replacing all failed IGUs at once is more cost-effective than one at a time.
Basic double-pane provides good insulation. Premium options with triple Low-E, krypton gas,
Glass Options
Different glass configurations offer different performance levels and pricing. Contact us for a detailed quote.
Two panes of clear glass with an air gap. Basic insulation improvement over single-pane. The most affordable insulated glass option.
Best ForBudget-conscious upgrades from single-pane windows
Clear glass with a Low-E (low emissivity) coating that reflects heat. Significantly better thermal performance than standard double-pane.
Best ForMost residential applications for energy savings
Low-E glass with argon gas between the panes instead of air. Argon is denser than air and provides better insulation.
Best ForHomes seeking maximum energy efficiency
Bronze, gray, green, or blue tinted glass that reduces glare and solar heat gain while maintaining the insulating benefit of double-pane construction.
Best ForSouth and west-facing windows with sun exposure
One or both panes are laminated for safety, security, and sound reduction. Holds together if broken and provides superior acoustic insulation.
Best ForGround-floor security and noise reduction
Three panes of glass with two insulating gaps. The highest level of insulation available. Significantly heavier and more expensive than double-pane.
Best ForExtreme climates and maximum energy performance
Our Process
We inspect your windows, determine if glass-only IGU replacement or full window replacement is best, and measure for exact specifications.
We provide a written estimate with glass-only and full replacement options so you can make an informed decision based on condition and budget.
Your insulated glass units are manufactured to exact size with your chosen glass type, coatings, and gas fill.
We install the new double pane glass, verify the seal, clean everything, and provide your Comprehensive Warranty documentation.
Why Expert Glass Repair
We specialize in insulated glass unit replacement, which is often the most cost-effective way to restore window performance without replacing the entire window frame.
For windows where the frame is also deteriorating, we provide full window replacement with the latest energy-efficient double and triple-pane options.
Every replacement includes our Comprehensive Warranty covering the seal, glass, and workmanship.
Service Area
We replace double pane windows and IGUs in homes throughout the DC metro area.
Cost FAQ
Common questions about double pane window pricing.
Get Your Free Estimate
Free on-site assessment with glass-only and full replacement options. Energy-efficient upgrades for every budget. Serving the DMV.
Fully Insured -- Comprehensive Warranty -- Serving DC, Northern Virginia, and Maryland