Modern buildings code often demand basement window upgrades to allowed for safe egress - a way to get out in case of emergency. Plus, It's the best way to ensure greater peace of mind. We totally agree. But we know you also want a window that's not only safe and easy to exit, but insulated, secure and attractive. Upgrading windows will keep your basement warmer or cooler so you won't have to pump in expensive AC or heating depending on the season. do you know that up to 30% of energy lost through your home is lost through the windows? All our egress window are EnergyStart compliant with 3/4" insulated glass. They're custom built to fit existing steel frames, so you'll save money and ensure hassle-free installation.