Muntins—the small wood or metal strips that divide glass panes—are a hallmark of historic windows. This blog breaks down the anatomy of a muntin, why they matter architecturally, and how to preserve or replicate them using high-performance materials like Accoya or Red Grandis. Important details for historic window restoration as well.

Historic wood windows require some extra love, but with the right seasonal habits and gentle upkeep, you can prevent common issues like rot, stuck sashes, and peeling paint. From monthly operation to glazing inspection, here’s a DIY guide to keeping your windows beautiful and functional for decades.