Exterior Window Sill Paint Peeling |link| [ 2026 Release ]

Fixing a peeling sill requires more than a simple "patch-and-paint." Proper preparation is roughly 80% of the work. How to Fix Peeling Window Sill Paint - Sherwin-Williams

Exterior window sill exhibits widespread paint peeling, exposing bare substrate. exterior window sill paint peeling

The inspection focused on the exterior fenestration of the [North/South/East/West] elevation(s). Specifically, the following windows were identified with significant defects: Fixing a peeling sill requires more than a

: This is the #1 cause. Rain or melted snow sits on the flat sill and eventually seeps through hairline cracks in the paint. When the sun warms the sill, that water turns into vapor, creating pressure that pushes the paint film away from the substrate. that water turns into vapor