Repair Double Pane Window Seal Jun 2026

Many IGUs have 10- to 20-year warranties. Breaking the seal yourself will void it.

Mark did what any modern homeowner does: he watched videos. Most said the same thing: You can’t repair it. Replace the whole IGU (Insulated Glass Unit). Price quote: $800. But Mark was stubborn. He found one old forum post from a glazier in Minnesota who described “drilling and drying” – a temporary fix, but a fix nonetheless. repair double pane window seal

Use a 100% silicone weatherproofing sealant to bridge any visible gaps in the outer seal. Many IGUs have 10- to 20-year warranties