Prevent leaks with proactive roofing care: reseal pipe boots, reinforce valley liners

https://www.scribd.com/document/1008213785/Hidden-Costs-of-Roof-Replacement-and-How-to-Avoid-Them-219433

Prevent leaks with proactive roofing care: reseal pipe boots, reinforce valley liners, and repair flashing to keep water flowing off the roof.