The answer to 'which is better shingle replacement or' is that shingle replacement is generally better than trying to repair or patch existing shingles. Replacing old, damaged, or worn-out shingles with new ones is the most effective way to ensure your roof is properly sealed and protected from the elements. Shingle replacement provides a comprehensive solution that can improve the appearance, performance, and longevity of your roof.
Shingle replacement involves completely removing and replacing all of the shingles on your roof, rather than just patching or repairing small areas. This allows you to start with a fresh, uniform surface that is less prone to leaks, water damage, and other issues down the road. New shingles also typically come with longer warranties and better protection against the weather compared to older, deteriorating shingles.