A broken window seal is an inevitable degradation event in the lifecycle of an Insulated Glass Unit, driven primarily by the laws of thermodynamics and material fatigue. While the aesthetic nuisance of fogging can be temporarily addressed through defogging ventilation
Before you spend a dime, check the paperwork. Most IGUs come with a 10 to 20-year warranty on seal failure. broken window seal exclusive
You do not need to replace the whole window (frame, trim, sash). You only need to replace the Glass Sash or the IGU Insert . A broken window seal is an inevitable degradation
A window's visual clarity and insulating power depend entirely on its seal. When that seal fails, it transforms a high-performance architectural feature into a source of frustration and hidden costs. This exclusive guide explores how to identify, address, and prevent a broken window seal to protect your home’s value and comfort. Understanding Window Seal Failure You do not need to replace the whole
The most common cause of seal failure is the natural cycle of expansion and contraction known as thermal pumping.
Most new windows come with a 10–20 year seal warranty. But here’s the exclusive catch: warranties typically cover only the replacement glass unit, not labor. You’ll still pay $150–$300 per window for a technician to measure, order, and install the new IGU. And if the window is over 10 years old, the manufacturer may prorate the coverage—sometimes to as little as 10–20%.