Sill Repair (Rocker Panel Repair)

Sills are part of the body structure and carry crash loads. Rust often starts inside from blocked drains and trapped dirt. Repair sections or full outer sills are welded in. Checking and clearing the sill drain holes helps prevent rust.

Rotten metal is cut out and new steel is welded in, then sealed and protected with cavity wax.

Badly rotten sills can fail a roadworthiness test. Jacking on weak sills can crush them.