Foggy window repair and insulated glass unit replacement across Washington DC, Virginia, and Maryland. Restore clarity and energy efficiency without replacing your entire window.
When you search for “insulated glass repair near me,” you want a permanent fix for foggy, hazy, or condensation-filled windows. We replace the failed IGU with a new factory-sealed unit -- with optional argon gas fill, low-E coatings, and warm-edge spacers for maximum energy savings.
50%
Less Heat Loss
IGU
Replacement
Low-E
Upgrades
Fully
Insured
Benefits
Every month you wait to replace a failed IGU, you are losing energy, comfort, and money. Here is what insulated glass repair delivers.
A failed IGU costs you money every month in wasted heating and cooling energy. Replacing foggy windows with new argon-filled low-E IGUs can reduce window.
Fog, haze, and mineral staining between your window panes obscure your views and diminish natural light entering your home.
Failed IGUs allow cold drafts in winter and radiant heat in summer to penetrate through the window.
New factory-sealed IGUs with warm-edge spacers dramatically reduce interior condensation on window glass during cold weather.
Low-E coatings on replacement IGUs block up to 99 percent of ultraviolet radiation.
Laminated or thicker glass options in your replacement IGU provide measurably better sound insulation than standard double-pane windows.
Our Services
From a single foggy bathroom window to a whole-house IGU replacement project, we repair and replace insulated glass units in every type of window across the DMV.
Permanent repair of foggy, hazy, or condensation-filled double-pane windows. We replace the failed insulated glass unit while keeping your existing window.
When the perimeter seal of an insulated glass unit fails, the gas fill escapes and moisture infiltrates the cavity.
Full insulated glass unit (IGU) replacement for double-pane and triple-pane windows.
Upgrade your existing windows with high-performance IGUs featuring low-E coatings, argon gas fill, and warm-edge spacers.
For IGUs where the seal has developed a slow leak but the glass is not yet fogged, argon gas refill can extend the life of the unit.
Large-format insulated glass unit replacement for commercial storefronts, office buildings, and curtain wall systems.
Expert Insights
Insulated glass units do not last forever. The perimeter seal that keeps moisture out and gas fill in deteriorates over time due to UV exposure, thermal cycling, and the natural aging of sealant materials. Most residential IGUs have a functional lifespan of 15-25 years, though failures can occur earlier in windows with excessive sun exposure or manufacturing defects.
Every insulated glass unit has a dual-seal system: a primary sealant (typically polyisobutylene) that provides the moisture barrier, and a secondary sealant (silicone or polysulfide) that provides structural adhesion and UV protection. When UV radiation and thermal expansion cycles degrade the secondary seal, the primary seal becomes exposed and eventually fails. Once the seal breaks, the argon gas escapes and humid air enters the cavity.
Many homeowners assume that foggy windows require full window replacement. In most cases, that is unnecessarily expensive. If your window frame, sash, and hardware are in good condition, we simply replace the insulated glass unit -- the sealed glass panel inside the frame. This costs a fraction of a full window replacement and takes under an hour per window. We recommend full window replacement only when the frame is rotted, warped, or significantly damaged.
When you need IGU replacement, it is the perfect time to upgrade your window glass performance. If your original windows had basic clear glass, you can upgrade to low-E coated glass that blocks infrared heat while allowing full visible light transmission. You can add argon gas fill for improved insulation. You can upgrade from aluminum spacers to warm-edge spacers that reduce edge condensation and improve the overall U-factor of the window. These upgrades are inexpensive when done at the time of IGU fabrication.
The Washington DC metro area experiences both hot, humid summers and cold winters. This means your windows work hard in both directions -- keeping heat out in summer and keeping heat in during winter. Failed IGUs that lose their insulating gas fill and develop moisture intrusion are costing you on both your heating and cooling bills. The humid DMV climate also accelerates mineral staining on the interior glass surfaces once a seal fails, making timely replacement important for both energy savings and appearance.
IGU Options
Choose the IGU configuration that matches your energy goals and budget. Every option is available for residential and commercial windows in any size.
Two panes of clear glass with air or argon fill. The baseline double-pane window. Provides good insulation compared to single-pane but can be significantly improved with low-E coatings and gas fill upgrades.
Clear glass with a low-emissivity coating on surface 2 or 3 (interior surfaces of the IGU). Reflects infrared heat while allowing visible light to pass through. Reduces energy loss by 30-50% compared to clear IGUs.
Argon gas fill between the panes instead of dry air. Argon is denser than air and conducts less heat, improving insulating value by approximately 15-20%. Argon is inexpensive, non-toxic, and the standard gas fill for quality IGUs.
Gray, bronze, green, or blue tinted glass that reduces solar heat gain and glare. Tinted glass is especially useful for south-facing and west-facing windows in the DMV where summer solar heat is a major cooling load.
A non-metallic or hybrid spacer bar between the glass panes that reduces heat conduction at the edges. Warm-edge spacers improve the U-factor of the IGU and reduce condensation on the interior glass near the frame.
Three panes of glass with two insulating cavities. Provides the highest insulating value available. Recommended for new construction and deep energy retrofits. Heavier than double-pane and requires frames rated for the additional weight.
Our Process
From initial assessment to completed repair, here is what to expect when you choose Expert Glass Repair for your IGU replacement project.
We inspect every window, identify which IGUs have failed, check the condition of frames and hardware, and take precise measurements.
Replacement IGUs are factory-fabricated to match your exact window dimensions with your chosen glass type, coating, gas fill, and spacer system.
Our technician removes the failed IGU, cleans the frame, applies fresh glazing tape or sealant, and installs the new factory-sealed unit.
We verify each window for proper seal, clean operation, and visual clarity. You receive a workmanship warranty and the manufacturer warranty documentation.
Why Choose Us
A failed IGU costs you money every month in wasted heating and cooling. Replacing foggy windows with new argon-filled low-E IGUs can reduce window heat.
Virginia licensed contractor (), fully insured and bonded. Every IGU replacement is backed by our workmanship warranty.
IGU fabrication typically takes 5-10 business days. On-site installation takes 30-60 minutes per window.
Over two decades of insulated glass replacement across the DMV. We have replaced IGUs in every type of window -- vinyl, wood, aluminum, fiberglass, clad.
Service Areas
When you search for “insulated glass repair near me,” we are the local IGU replacement specialists with 20+ years of experience restoring foggy windows across the DMV.
Arlington, Alexandria, Fairfax, Falls Church, McLean, Tysons, Vienna, Reston, Herndon, Sterling, Leesburg, Manassas, Centreville, Chantilly, Springfield, Burke, Annandale, Great Falls, Oakton
Northern Virginia is our home base. We replace foggy IGUs in homes and offices across every NoVA community. The humid DMV climate accelerates seal failures, making IGU replacement one of our most requested services.
Bethesda, Chevy Chase, Silver Spring, Rockville, Gaithersburg, Germantown, College Park, Bowie, Laurel, Columbia, Hyattsville, Takoma Park, Wheaton, Kensington, Potomac, Olney
Insulated glass repair across Montgomery County, Prince George's County, and Howard County. We service all window brands and types. Whole-house IGU replacement projects are common in 15-20 year old Maryland homes.
Georgetown, Dupont Circle, Adams Morgan, Columbia Heights, Petworth, Brookland, Foggy Bottom, Navy Yard, Capitol Hill, Cleveland Park, Woodley Park, Tenleytown, U Street, all DC quadrants
DC insulated glass repair for rowhouses, condominiums, and apartment buildings. We navigate building access logistics and HOA requirements for multi-unit IGU replacement projects.
Common Questions
Ready to Fix Foggy Windows?
Call us today or request a free estimate online. We will assess your foggy windows, measure for replacement IGUs, and provide a detailed quote with energy upgrade options. Stop wasting energy through failed seals.
Complete window glass repair and replacement services for single-pane, double-pane, and specialty windows.
Learn MoreFull window replacement when frames are damaged or you want a complete upgrade to new windows.
Learn MoreLow-E coatings, argon gas, and high-performance glass options for maximum energy savings.
Learn MoreComplete guide to window condensation causes, prevention, and when IGU replacement is needed.
Learn More