| Repair Type | Material Cost | Labor Cost | Total | Lifespan | |-------------|---------------|------------|-------|-----------| | DIY defogging | $15–30 | $0 | $15–30 | 6–24 months | | Professional defogging | $50–100 | $100–150 | $150–250 | 1–3 years | | IGU replacement (DIY) | $100–300 (per unit) | $0 | $100–300 | 10–20 years | | IGU replacement (pro) | $150–400 | $150–300 | $300–700 | 10–20 years | | Full window replacement | $300–1,200+ | $200–500 | $500–1,700+ | 20–30+ years |
A double-pane window consists of two sheets of glass separated by a spacer and sealed with a primary (polyisobutylene) and secondary (silicone or polysulfide) sealant. The air gap is often filled with an inert gas (argon or krypton) to improve insulation. When the seal fails, moisture enters the gap, causing fogging, reduced visibility, and loss of thermal performance. window double pane repair
| Cause | Description | |-------|-------------| | | Extreme temperature fluctuations cause expansion/contraction, weakening seals. | | UV degradation | Sunlight breaks down sealant materials over time (typically 10–20 years). | | Poor installation | Improper flashing, sloped windows, or pressure imbalances during installation. | | Window frame movement | Settling of the building or warping of vinyl/wood frames. | | Manufacturing defects | Thin sealant application or contaminated spacer desiccant. | | Repair Type | Material Cost | Labor
A double pane window consists of two sheets of glass separated by a spacer and a sealed pocket of air or insulating gas (like argon). Keeps moisture out and insulating gas in. | Cause | Description | |-------|-------------| | |