You may need to use a putty knife to break the seam between the first course and the starter strip.
How to repair flat roof edge.
Use a flat pry bar to remove drip edge nails along the eave and rakes.
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.
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.
Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it.
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.
Slide the flat bar under starter course and pry out the nails.
Install roof drip edge along the eaves add underlayment then place drip edge along the gable end.
Suitable for cracks in felt asphalt and lead.
Complete the finish of a flat roof installation with permaroof kerb trim edging.
And not to use too much of it making it uneconomical messy or potentially more difficult to repair replace professionally later on.
Rubber roof repair kit available on amamzon.
The trick with any flat roof repair is use the right repair material on the right type of roof.
Suited for repairs to felt concrete and asphalt.
Cut around the damaged area until the membrane rests flat.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
For most small punctures you can repair your roof simply by forcing sealant into them.
On some roofs you may need to remove a couple of shingle nails to make some room to work.
Their position at the edge.
Sometimes doing that is difficult.