Repair — Updated Cracked Window Sill

Vinyl sills are durable but can become brittle in cold weather or crack under impact.

Often found in wood due to expansion/contraction or moisture. cracked window sill repair

Don't let wet leaves sit on your sills, as they trap moisture against the wood. To help you get started, Vinyl sills are durable but can become brittle

Usually cosmetic; caused by paint failure or minor settling. cracked window sill repair

If the crack is very narrow, you may need to "V-out" the crack (widen it slightly with a chisel) so the repair material has enough surface area to grip. Step C: Apply the Filler

Here is a comprehensive guide to identifying, prepping, and repairing a cracked window sill. 1. Assess the Damage