The answer to 'how to install shingles' is to properly prepare the roof, install the underlayment, and then carefully secure the shingles in an overlapping pattern. This process requires attention to detail and safety precautions to ensure a durable and watertight roof.
Before starting, inspect the roof for any damage or issues that need to be addressed. Make sure the roof deck is in good condition and free of debris. Apply a layer of roofing felt or synthetic underlayment to the roof deck, overlapping the seams as specified by the manufacturer. Then, begin installing the shingles in a staggered pattern, making sure each shingle is properly secured with roofing nails. Pay close attention to the edges and valleys to ensure a tight seal. Finally, apply any necessary flashing, sealants, and ventilation to complete the installation.