The answer to 'types of shingle replacement' is that there are several common options for replacing asphalt shingles on a home. The most common type is a complete roof replacement, where all old shingles are removed and new shingles are installed. This is typically done when the existing roof is significantly worn or damaged. Another option is a shingle overlay, where new shingles are installed directly over the old shingles without removing them first. This is a more cost-effective solution but may not last as long as a full replacement. Lastly, spot repairs can be done to replace individual damaged or missing shingles without redoing the entire roof.
The best approach depends on the condition of the existing roof, your budget, and the local building codes in your area. It's generally recommended to consult with a professional roofing contractor to evaluate your specific situation and provide the best recommendation.