You can’t restore a 100-year-old window with a butter knife. This guide covers the essential tools pros and serious DIYers use to strip paint safely, reglaze properly, and restore historic sashes without damage. Whether you’re working on a bungalow or brownstone, the right tools matter.

Ever had a historic window slam shut unexpectedly? That’s likely a broken sash cord. In this post, we break down how sash cords, chains, and counterweights work—and how to restore them. Whether you're a DIYer or just curious, this guide will help you appreciate the elegant mechanics behind old double-hung windows.