Using a utility knife make a shallow cut until you can remove material around the spot without damaging the layers underneath it.
How to repair a flat tar roof.
Sometimes doing that is difficult.
Also force the roofing cement under the existing roofing.
Use a putty knife to do this job.
What you need utility knife trowel squeegee broom for applying aluminum coating hammer.
Remove the areas that have been cut out and get your roofing cement in order.
Open the epdm square vertically along the length of the roof.
Use those measurements on the rooftop to create a starting point for your search.
For most small punctures you can repair your roof simply by forcing sealant into them.
Lay down the square folded epdm material in the center of your flat roof.
From inside measure the distance from where the leak is visible to the two nearest walls.
Flip the topmost piece of the epdm material downward across the length of the roof.
Align the bottom so its parallel to the bottom length of the roof.
Take the roofing cement and apply it on the area that held the damaged material.
Tools and materials needed trowel flat pry bar caulk gun if using asphalt repair material in a caulk tube utility knife with a straight blade dust brush scissors asphalt primer roof cement reinforcing fabric 4 or 6.