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.
How to repair rubber roof leaks.
Cannot be washed off by water.
Examine all seams on your roof for splitting or separating.
Weathered membrane cleaner this liquid is used to dissolve and remove residue off the roof which.
If you take that step be sure to cover the nail heads with tar roof sealant or peel and stick flashing patch.
Pull off the old rubber roofing from the cut area.
Lap caulk sealant used to seal the edges of a patch.
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.
Epdm primer or glue this is used to adhere patches and flashing to rubber membrane.
Separate the leaking seam to about 12 inches or more from the leak.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.
Unscrew and remove the large metal washers holding down the fiberboard substrate.