Open or lifted seams
Side and end laps are the first thing to fail on a bitumen roof. Thermal cycling works the lap loose, and once water is under the cap sheet it tracks along the ply.
Flat roofing
Bitumen Flat Roof Repair in New Jersey
Modified bitumen and older built-up roofs fail at seams, blisters, flashing and drainage long before the membrane field wears out. We trace the actual water path, check whether the insulation below is still dry, and then tell you whether this is a repair or a section that has to come off.
Failure patterns
Where bitumen roofs actually leak
A flat roof rarely leaks where the ceiling stain is. These are the six conditions we look for on every bitumen inspection, in this order.
Blisters and ridging
Trapped moisture or air between plies expands in heat. A blister that has broken open is an active entry point; an intact one is a monitored defect, not an emergency.
Flashing and parapet details
Base flashing, counterflashing and coping joints at walls and parapets cause more flat-roof leaks than the membrane field ever does.
Drains, scuppers and ponding
Standing water is a symptom of blocked drainage or a sagging deck. Repairing the membrane without fixing drainage guarantees a repeat call.
Penetrations and curbs
HVAC curbs, vents and conduit supports get walked on, re-sealed with the wrong material, and then leak at the collar.
Wet insulation below the membrane
The reason a patched flat roof keeps leaking. We probe and cut test areas so the decision to patch or tear off is based on evidence.
Diagnosis
How we decide between patch, section or replacement
The inspection produces photographs and probe results, not an opinion.
1
Map the drainage path and the seam layout, then work backwards from where water can travel.
2
Photograph every seam, blister, penetration and flashing detail that is a candidate entry point.
3
Probe or test-cut suspect areas to check whether the insulation under the membrane is wet.
4
Price the honest options side by side: targeted repair, sectional tear-off and re-lay, or full replacement.
5
Put the recommendation in writing with the photos attached, so nothing rests on trust alone.
Every Done Rite repair and replacement carries our 25-year workmanship warranty, in writing.
Water coming in right now?
Emergency stabilization and tarping across northern New Jersey. We stop the damage first, document it for your insurer, then repair it permanently.
Answers
Bitumen flat roof questions
Next step
Get your flat roof looked at properly
One inspection, photo evidence, written options. Repair if repair is right, replacement if it isn't.