What is the first step in installing asphalt shingles on a roof?

The first step in installing asphalt shingles on a roof is to install eave protection. This is essential as it provides a barrier against water infiltration at the edges of the roof, particularly in areas where ice may accumulate or where there is a risk of water running back underneath the shingles. By starting with eave protection, you ensure that the roof is properly prepared to handle potential leaks and protect the underlying structure of the roof.

Eave protection typically consists of a self-adhesive membrane that bonds to the roof deck and seals around nails, which is critical in preventing water damage. Once the eave protection is installed, other components, like flashing and the shingles themselves, can be installed effectively, ensuring a comprehensive waterproofing system. By prioritizing eave protection, you lay a solid foundation for the subsequent roofing steps.