On this episode of The Build Show, Zack Dettmore teams up with architect and former building science professor Dan Kopec to explore the benefits of restoring old windows instead of replacing them with vinyl. Dan shares his firsthand experience upgrading the original 100-year-old windows in his home, using gaskets and proper sealing techniques to improve efficiency without sacrificing character. They discuss cost, comfort, historic preservation, and long-term durability—challenging the conventional wisdom that vinyl replacements are the best option. If you're considering window upgrades, this is an episode you don’t want to miss!