If you need a new roof

Remove and dispose of all existing roofing material
Inspect wood deck and replace rotted wood
Install metal drip to all perimeter edges
Apply ice and water shield Apply 15 lbs asphalt underlay to cover the entire roof surface
Install 24" valleys
Install starter shingles
Apply new self-sealing shingles - quality and warranty to be discussed Install new plumbing vents of pre-baked aluminum with caps
Install maximum ventilators
Install chimney sizing and flashing
Clear away old debris