Remove and dispose of existing roofing materials down to the roof deck. Inspect the roof decking and replace any deteriorated sections. Use roof deck tape. Install new underlayment, including ice and water shield, in compliance with current building codes. Install new asphalt architectural shingles, flashings, vents, and other roofing accessories, replacing or properly re-flashing them to ensure a watertight installation.
Remove and dispose of old shingles. Replace decking as needed. Install deck seam tape, underlayment, ice and water, flashing, drip edge, vent, and asphalt shingles.