Depending on how the roofs join you may have to cut a slot to work it in far enough.
How to repair flat roof edge.
Install roof drip edge along the eaves add underlayment then place drip edge along the gable end.
Use a flat pry bar to remove drip edge nails along the eave and rakes.
Their position at the edge.
Sometimes doing that is difficult.
Slide the flat bar under starter course and pry out the nails.
809 p71656 a 6 strip off felt pushed in as far as you can up to 3 then a further squirt between felt and roof to give a seal.
Cut around the damaged area until the membrane rests flat.
Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it.
Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice and water barrier available where roofing repair products are sold under the soffit main roof joint.
Rubber roof repair kit available on amamzon.
The eaves at the bottom of a roof and the gable ends that run up the slope are often the first to show signs of rot and damage.
Find out how to fix a kerb edge in this detailed instruction video.
You may need to use a putty knife to break the seam between the first course and the starter strip.
Suited for repairs to felt concrete and asphalt.
The trick with any flat roof repair is use the right repair material on the right type of roof.
Complete the finish of a flat roof installation with permaroof kerb trim edging.
Step by step how to repair a roof edge.
The best way is to install the roof drip edge only along the eaves first then place ice and water barrier in the snowbelt or felt paper underlayment over the drip edge.
Suitable for cracks in felt asphalt and lead.