Glass Damage Affects More Than Looks

Potomac Glass Repair fixes fogged and cracked glass throughout Rockville, Maryland and the DMV region.

When condensation builds between your glass panes or a visible crack runs across your window, it changes how your home looks from the street and how much you can see from inside. In Rockville, Arlington, Bethesda and surrounding areas, where older neighborhoods mix with newer construction, seal failure in insulated glass units is one of the most common reasons homeowners call for service. You might notice fogging that never clears, or a hairline crack that started small but now catches your eye every time you walk past.


Potomac Glass Repair evaluates the condition of your glass and offers repair options that address moisture buildup and seal failure without requiring full window replacement in many cases. The service focuses on restoring clarity and preventing the problem from spreading, which can happen faster once the seal has broken and moisture has entered. Catching the issue early reduces the risk of further damage and keeps your glass functioning the way it should.


If you have fogged or cracked glass in your Rockville and DMV area home, call (202) 740-6600 for an assessment and repair recommendations.

How Seals Fail and What Happens Next

After you call, Potomac Glass Repair visits your home in Rockville or a surrounding area to inspect the damaged pane and determine whether the glass itself can be repaired or if the insulated unit needs replacement. The technician checks the frame, evaluates the extent of the seal failure, and explains what caused the fogging or crack to develop in the first place.


Once the work is done, you will notice clearer sightlines, no moisture between the panes, and glass that no longer distorts the view or collects condensation. The repair restores the appearance of your window and helps it insulate properly again, which can affect how your heating and cooling systems perform during colder or warmer months.


The service does not include full window frame replacement or structural modifications. It focuses on the glass itself and the immediate area where the seal has failed. If the frame is damaged or rotting, that may need to be addressed separately before the glass can be properly secured.

Homeowners often want to know whether fogged glass can be fixed without replacing the entire window and how long the repair will hold up once it is completed.

Questions About Cracked or Fogged Glass

What causes fogging between glass panes?
Fogging occurs when the seal around an insulated glass unit fails and allows moisture to enter the space between the panes. Once the seal is broken, humidity from the air condenses inside and cannot evaporate.
How long does a glass repair take?
Most residential glass repairs in Rockville take between one and two hours depending on the size of the pane and the type of damage. The technician will confirm timing after inspecting the window.
When should I repair a cracked pane instead of waiting?
You should repair a cracked pane as soon as you notice it because temperature changes and pressure from wind can cause the crack to spread. Early repairs prevent the glass from breaking completely.
What happens if the frame is also damaged?
If the frame shows rot or structural damage, it needs to be repaired before the glass can be properly sealed. Potomac Glass Repair will assess the frame during the visit and let you know what additional work is needed.
Why does fogged glass affect heating and cooling?
Fogged glass means the insulating seal has failed, which reduces the thermal performance of the window. Air can transfer more easily between the inside and outside, making your HVAC system work harder to maintain temperature.

Potomac Glass Repair handles fogged and cracked glass throughout Rockville and the surrounding area, working with both older homes and newer builds. 


If your windows are showing signs of seal failure or visible damage, call (202) 740-6600 to schedule an assessment.