The answer to 'how to install shingle replacement' is to follow these steps carefully. First, inspect the roof and identify any damaged or missing shingles that need to be replaced. Then, safely remove the old shingles and clean the area. Next, install new shingles by aligning them properly and securing them with roofing nails. Finally, seal the edges and inspect the work to ensure a proper installation.
It's important to take safety precautions when working on a roof, such as wearing non-slip shoes, using a safety harness, and avoiding working in inclement weather. Shingle replacement should be done at least once every 15-20 years, or sooner if significant damage is present.