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Finally, he replaced the broken glazing bead that had started the whole tragedy, bedding it in fresh glazing compound.
Before beginning the repair, it's essential to identify the source of the rot. In most cases, rotted window sills are caused by water seeping into the sill through gaps or cracks in the surrounding window frame or siding. Other potential causes include poor drainage, clogged gutters, or condensation buildup. To prevent future rot, it's crucial to address the underlying issue. Inspect the window and surrounding areas to determine where the water is entering. Check for damaged or missing caulk, cracked siding, or clogged gutters. Make a note of any necessary repairs to be completed in conjunction with the window sill repair.
And so he told himself—and now, he’ll tell you—how to repair rotted window sills without losing the soul of the house.