The answer to 'signs of roof installation damage' is that there are several potential indicators that your roof may have been installed incorrectly or sustained damage during the installation process. These can include missing, loose, or improperly sealed roof shingles, visible gaps or cracks in the roofing material, water leaks or stains in the attic or interior of your home, and uneven or sagging roofing sections.
Roof installation damage can occur due to a variety of factors, such as improper nailing or fastening of the shingles, use of low-quality or incompatible roofing materials, or damage caused by the roofing crew during the installation. It's important to regularly inspect your roof and address any issues promptly to prevent further damage and costly repairs down the line.