The answer to 'shingle replacement for worn out shingles' is that you likely need to replace your roof shingles. Worn out, damaged, or missing shingles are a common sign that it's time to replace your roof. Some common causes include age, weathering, and impact damage from storms. Symptoms include cracked, curled, or missing shingles, leaks, and stains on your ceiling or walls.
In many cases, replacing worn out shingles is a job best left to professional roofing contractors. Roof work can be dangerous, and improper installation can lead to leaks and other problems. However, for minor repairs like replacing a few shingles, a handy homeowner may be able to do the work themselves with the right tools and safety equipment.