Flat Roof Leak Repair Experts!

Flat roof leaks:

Flat roof materials last usually 15-20 years with some commercial grade applications lasting up to 30 years. Most flat roofs, however leak within 5-10 years of installation, due to openings in roof at penetrations. (vent pipes, a/c units, fence posts and perimeter flashing)

Flat Roof Repairs

Residential: The most common residential flat roof leak occurs where flat roofing meets siding. The ‘flashing’ at this joint is crucial. Flashing comes in many forms. Flashing can be copper, aluminum, lead or tar. That’s right, tar. The best form of flashing with residential flat (low slope) roofing is actually none of these. Whether it is a metal or the roof sealed right to the siding, either way, it can fail. If the flat roofing were to continue up the wall behind the siding, there is no tar to fail. This method will last as long as the material. It will not fail. Physics never fails. Tricky part to this is the layers of siding. To be done properly, the flat roof (we prefer Rubber roofing) needs to continue behind all layers of siding (vinyl, insulation, asbestos and tar paper is most common).

Commercial: Commercial and industrial flat roofs have perimeter penetration and the trickiest leak: a/c units. Roof perimeters are often kept inches shy of the edge and neatly sealed to existing or new metal using tar (and fiberglass fabric in most cases). This seal will eventually fail allowing water directly in to building or worse, in between layers of flat roofing, sometimes not noticed until roof becomes beyond repair. The adhesion between top roof and underlying roofs is vital to the top roofs survival (longevity), so avoiding leaks on a multi layered roof is vital. It is as simple as adding about 4 inches of material to the roof perimeter. This enables the roof to continue over the edge, overlapping wall or existing metal coping. This raw edge is then finished with an aluminum drip edge to fasten and cover roofing.

We are Long Island's Most Reliable Residential and Commercial Roof Consultants!

Other Common Roof Leak Situations

Click the links below to read about other common leaks that can affect your home.