If the plumbing vent is close to the peak of the roof lap the shingles over the peak of the roof.
How to install a new roof shingles.
Position the ridge cap shingles over the ridge vent.
Attach he ridge cap shingles with two nails each.
Install new flashing metal flashing is often called drip edge along the bottom of the roof near your gutters.
Having a clean flat deck surface will help ensure that the newly shingled roof will likewise appear smooth and flat when finished.
To start installing shingles line up aluminum drip edge flush with the edge of the roof and make a pencil line at the top on each end of the house.
Attach the plastic ridge vent with 3 roofing nails.
Using the chalk line snap a line between the two marks to get a straight edge.
Installing roof shingles in 11 steps.
The quote includes pulling a permit removing old roof shingles inspecting sheeting boards and replacing boards at 50 00 per 4 x8 sheet or 5 00 per board foot installing new drip edge replacing metal flashing on chimney electrical mast flashing new pipe flashing installing new baffled ridge vent and disposing of all debris.
Always install flashing around a chimney and other valleys where two roof planes meet as these areas are more prone to leaks if not protected.
Before installing any roofing materials make sure that the roof deck is smooth properly fastened to the roof trusses dry and free of any gaps or holes.
Installing new shingles yourself can save considerable time and money and you can follow the same steps they do to achieve the same professional look.