Pipe penetrations require a compatible waterproofing detail that accommodates the actual pipe and roof system. A generic pile of sealant can obscure the condition without establishing a durable repair.
What to do next
Ask the contractor to identify the existing penetration detail and proposed replacement or correction. Include nearby membrane condition in the assessment. Keep information about equipment movement or service work available so the repair is designed around real operating conditions.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.