An underlayment selection must fit the roof covering, substrate, installation conditions, and applicable assembly requirements. A familiar brand name does not explain those relationships or establish that a particular product is appropriate.
What to do next
Ask for the exact product designation and relevant installation documentation. Have the roofer explain how transitions, penetrations, and temporary exposure will be managed. If alternatives are proposed, compare complete systems instead of selecting only by price per roll.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.