How To Repair A Rotted Window Sill Today

1️⃣ – Use a 5-in-1 tool or flathead screwdriver to dig out loose, decayed wood. 2️⃣ Treat the area – Apply wood hardener to stop remaining rot and prep for filler. 3️⃣ Fill deep holes – Use two-part epoxy wood filler (not standard putty). Overfill slightly. 4️⃣ Shape & sand – Once cured (24h), sand flush with the original profile. 5️⃣ Prime & paint – Use exterior primer + paint to seal against future moisture. 6️⃣ Add drip edge – Caulk the underside joint to shed water away.

Here’s a social media post tailored for , Instagram , or LinkedIn (visual platform). You can pair it with a before/after photo or a short video clip. Caption: how to repair a rotted window sill

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👉 Save this for spring maintenance or tag a friend who needs to tackle that rotting sill before it reaches the frame. 1️⃣ – Use a 5-in-1 tool or flathead

Noticed soft, crumbly wood under your window? Don’t panic—and don’t call the carpenter just yet. Here’s how to repair a rotted window sill in 6 steps: Overfill slightly

🎯 Check your window’s weep holes and caulk the top of the sill where water seeps in behind the paint.