How To Repair Rotted — Window Sills

He even scored a fake wood grain into the epoxy with the tip of a hacksaw blade, just so it wouldn’t look like a plastic patch. A true repair shouldn’t hide; it should honor.

By the time he noticed the problem, it wasn’t a drip anymore. It was a soft, crumbly patch of wood near the outer edge—dark brown, spongy to the touch, and flecked with the fine orange dust of dry rot. how to repair rotted window sills

Crucially, he checked beneath. Rot that goes all the way through the sill’s thickness and into the wall framing is a different beast. This was surface rot—deep, but not structural. Repairable. He even scored a fake wood grain into

He brushed on an exterior oil-based primer, then two topcoats of satin latex. But the real secret came last: he did not caulk the bottom edge of the sill where it met the brick. Many people make that mistake. Caulk there traps water. Instead, he left a ⅛-inch gap—a “weep path”—so any future moisture could escape. It was a soft, crumbly patch of wood