4 Steps to Diagnosing a Leaky Metal Roof

If the metal roof on your home or business develops a leak, it’s important to locate and repair it quickly so you don’t incur damage to your drywall, floors, molding and insulation.

While it may take awhile to find, there are several things to look for when you’re trying to diagnose a metal roof leak.

4 Steps to Diagnosing a Leaky Metal Roof

1. If the attic is accessible, inspect it with a flashlight. You’re looking for discoloration and dark stains indicating that the wood is wet—or was recently wet. In extreme cases, you may see mold or mildew stains inside the attic. If possible, trace the dark stain to a screw or nail hole, roof valley or joint. Take note of its location before heading out to inspect the metal roof’s exterior.
2. On a sunny, dry day, examine the exterior of your roof—paying special attention to the potentially leaky valleys, joints and screws you noted in the attic. Several things may cause leaks, including loose flashing, joints, ridge caps or fasteners. Re-secure all loose fasteners and check the integrity of all joints, making sure that all caulking is in tact and water is not seeping underneath. Extreme heat or cold can damage rubber sealant, so you may need to reapply it in potentially leaky areas. Make sure you purchase caulking that is approved for exterior, metal roof use.
3. Carefully inspect the perimeter of the chimney, if one is present, since flashing can draw up around the chimney’s edge. It’s important to replace or tighten all warped flashing to avoid future water problems. You may also wish to apply a new layer of caulking around the chimney’s base.
4. Remember, water damage can be difficult to diagnose because it does not always occur directly below your metal roof leak. Water may run down a valley and trickle into a window, or pool in the attic and cause damage to interior walls.

Don’t Let a Leak in Your Metal Roof Go Unnoticed

If you’re not comfortable inspecting your metal roof yourself or are unable to find the source of a persistent roof leak, call LGC Roofing, top NJ roofing professionals. Our technicians will thoroughly inspect your home’s interior and exterior, recommending affordable roof repairs before you develop a costly structural issue or an ongoing mold problem.

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