In many cases you will not need to replace the roof flashing at all.
How to replace roof vent flashing.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
There s no need to lace the flashing pan into the shingles since the boot and bell of the new flashing will shed water around the damaged part of the old one.
Roof shingle over step flashing.
Nail the bottom two corners about an inch in from each side the same position as when you took the flashing off.
Five steps to replace a vent pipe flashing 1.
It has a rubbery sort.
Step flashing on roof peak.
To replace flashing around the vent pipe first remove the shingles covering the flange at the back and sides.
Bend the corner flashing tightly around the corner.
Pull or cut off any nails.
Position a new vent pipe flashing over the vent push it down into place and nail where shingles will cover it.
Be sure to clean the outside.
The home mender shows how to replace a broken pipe collar on a shingle roof.
Click the links below to see inside dustin s toolbox ps roofers charge up to 2.
Carefully remove all the shingles from the flashing.
Pry and lift off the flashing.
Remove the old and clean the pip e.
New pieces can often be screwed or glued in place although the seals may need to be removed and new caulk or roofing cement installed first.
Slide the new flashing over the vent pipe and under the shingles above the pipe.
Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.
Ice and water shield is the best underlayment to use around penetrations.
In simplest terms a new vent pipe boot flashing is slid over the top of the existing one and the top edge of the pan is lapped beneath the overlying shingle course.
Replace the shingles and cover the nail heads with roofing cement.
Lift shingles to check for gaps and repair as needed using screws not nails.