Damaged or deteriorating glass is a detriment to your comfort, energy efficiency, and home security. The good news: full window replacement is rarely necessary. When the sash and frame are still sound, new glass alone can transform a window's performance.
Upgrading old glass to a Cardinal Insulated Glass unit with LoE coating and Argon fill dramatically improves energy performance — often beyond what even a brand-new standard window delivers. You get better insulation, reduced glare, and lower heating and cooling bills.
Foggy or cloudy glass — condensation between panes means the seal has failed
Cracked or chipped glass — compromises insulation and safety
Drafts or cold spots near windows — a sign of failed seals or single-pane glass
High energy bills — old glass is often the biggest source of heat loss
Upgrading for efficiency — LoE/Argon glass outperforms most standard replacements
Cardinal IG® has repeatedly proven itself superior in durability, insulation, and long-term thermal performance. It holds the lowest seal failure rate in the industry and the highest Argon retention rate of any manufacturer — meaning it keeps working long after other brands have failed.
Their LoĒ³-366 coating sets the benchmark for solar heat gain control — reducing heat transfer in summer while retaining warmth in winter, better than any comparable product on the market. It's the same glass specified by Andersen, Pella, and Marvin for their premium window lines.
We've seen Cardinal IG® units last well beyond 30 years in the field — long past the competition. When we recommend it, we mean it.