Epdm primer or glue this is used to adhere patches and flashing to rubber membrane.
How to repair rubber roof leaks.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
Unscrew and remove the large metal washers holding down the fiberboard substrate.
Mark those you find.
Lap caulk sealant used to seal the edges of a patch.
Cannot be washed off by water.
This will give you a clean broad surface to apply your adhesive to.
Some roofers also suggest using 6d roofing nails to secure the blister flaps.
Examine all seams on your roof for splitting or separating.
Separate the leaking seam to about 12 inches or more from the leak.
When the membrane is completely dry apply the appropriate roof repair material such as roof cement tar or peel and stick patch.
Locate the source of the leak on the roof then use a utility knife to slice through the rubber roof around the suspected trouble spot.
If you take that step be sure to cover the nail heads with tar roof sealant or peel and stick flashing patch.