Serving Greater Jackson

Flat Roof Repair

Repairs for flat and low-slope porch, addition, garage and manufactured home roofs, matched to the membrane already there.

Jackson Elite Roofing handles flat roof repair in Jackson, NJ, serving surrounding cities including Vista Center, Cedar Glen West, Leisure Knoll, Leisure Village West and Plumsted. Most of the flat and low-slope roofs we fix are on houses rather than warehouses: porch roofs, rear additions, attached garages, sunrooms and the low-pitched roofs on manufactured homes.

These roofs leak differently from shingles. Water does not run off quickly, so a small split in a seam or a cracked edge can let water soak into the insulation and deck for weeks before a ceiling stain appears. After more than 20 years in roofing, we know where to look first and how to match the repair to the membrane already on the roof.

We start in the attic or ceiling space below the flat section when it is accessible, then on the roof itself. That tells us how far the water has traveled and whether the repair is a patch or a larger section of wet material that needs to be replaced.

Flat Roof Materials We Repair

A roofer pressing down a new patch on the low-slope roof over a rear addition of a Jackson Township split-level.

EPDM Rubber Roofs

EPDM is a black synthetic rubber membrane common on porches and additions. It usually fails at seams, around edges and at penetrations rather than in the open sheet, and older roofs can shrink and pull away from walls. We clean and prime the area properly and use compatible EPDM patches, tapes and flashing, because a generic roof patch will not bond to rubber for long.

TPO and PVC Membranes

TPO and PVC are white or light gray single-ply membranes with heat-welded seams. Leaks typically start at a seam that was never fully welded or at a corner or penetration where the flashing was cut short. We repair these with matching membrane welded with hot air, which is the only reliable way to join them.

Torch-Down Modified Bitumen

Modified bitumen, often installed with a torch, is a thick asphalt-based membrane reinforced with polyester or fiberglass. It wears at laps, cracks along edges and develops blisters where moisture or air was trapped during installation. We cut out and repair blisters, reseal laps and add new plies over worn areas using compatible materials and careful torch work.

Built-Up and Roll Roofing

Older flat roofs may be built-up tar and gravel or simple mineral-surfaced roll roofing. These can often be patched for a few more years, but they are near the end of their useful life on many older houses. We tell you plainly when a repair is worth doing and when the roof has reached the point where patching only delays a replacement.

Common Flat Roof Problems

Split Seams and Open Laps

Seams and laps are the weak points of any membrane, especially where the roof expands and contracts in summer sun and winter cold. A seam that has opened slightly can let in a surprising amount of water during a heavy rain. We repair the seam with the correct method for the membrane rather than smearing tar over it, which traps water underneath.

Blisters and Soft Spots

Blisters form when moisture or air trapped under the membrane expands in the heat. Some are harmless for years, but a blister that cracks opens a hole in the roof. Soft spots underfoot usually mean the insulation or deck beneath has been wet for some time. We test those areas, cut out wet material and replace it before patching the membrane.

Ponding Water and Clogged Drains

Water that stands for days on a flat roof speeds up wear and puts constant pressure on any weak seam. Ponding usually comes from a sagging deck, compressed insulation, a clogged drain or scupper or a roof that was never sloped properly. We clear drains, repair the low spots where possible and, on larger repairs, add tapered insulation to move water toward the edge or outlet.

Edges, Walls and Transitions

Flat roofs on houses usually meet a wall or a shingled roof somewhere, and those transitions leak more than any other part. Membrane must be carried up the wall and covered with counter flashing, and where a flat porch roof runs under the shingles above, the flashing has to lap in the right direction. We rebuild these details with proper flashing and edge metal rather than sealant alone.

Flat Roofs on Jackson Homes

Porch Roofs, Additions and Garages

Plenty of houses around Jackson, of every age, have flat or nearly flat roofs over porches, family room additions and attached garages. These sections often age faster than the main roof, because they were built with a lower-grade membrane or have taken more ponding. We can repair them independently or plan them with a main roof replacement so the whole house is on the same schedule.

Manufactured Home Roofs

Jackson has a sizable number of manufactured homes, and their low-slope metal or membrane roofs leak at seams, vents and fasteners. Depending on the roof’s condition, we reseal and coat it or recommend a roof-over system that adds pitch and insulation. We check what the community or park requires before starting.

Coatings, Repair or Replacement

A coating can extend the life of a flat roof that is still sound and dry underneath, and spot repairs can buy years on a roof with one or two problem areas. When the membrane is failing across the roof, the insulation is wet in several places or repairs keep failing next to each other, replacement is the better value. We give you a straight answer and an itemized scope either way, so you can decide with a clear picture.

  • 20+ Years in Business
  • Free Written Estimates
  • Attic Checked on Every Leak Call

Good to know

Frequently Asked Questions

How do I know what kind of flat roof I have?

EPDM is usually a black rubber sheet, TPO and PVC are white or light gray with welded seams, and modified bitumen looks like thick rolled roofing, often with a granular surface. Older flat roofs may be built-up tar and gravel or simple roll roofing. We identify the material before repairing it, because patches must be compatible.

Why does water stand on my flat roof after rain?

Low spots form where the deck has sagged, insulation has compressed or the roof was built without enough slope toward a drain or edge. A little water that evaporates within a day or two is common, but water that stands for days speeds up aging and finds every weak seam.

Can a flat roof be coated instead of replaced?

If the membrane is still sound and the insulation underneath is dry, a compatible coating can add years of service. If the roof is soft underfoot, wet underneath or failing at seams everywhere, a coating will not fix it and replacement is the better money.

Can I walk on my flat roof?

Occasional careful foot traffic is fine on most membranes, but repeated traffic, sharp objects and furniture wear through them quickly. If a flat roof doubles as a deck or gets regular service visits, walk pads or a tougher membrane are worth considering.

How long does a flat roof repair take?

Most residential flat roof repairs, such as a split seam, a blister or a reflashed edge, are finished in a few hours once the surface is dry. Larger areas of wet insulation or deck replacement take longer, and we tell you the expected time when we quote.

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