5 Causes of Roof Leaks During Heavy Rain

Roofing leaks often develop during heavy rains.A leaking roof is an average homeowner’s worst nightmare. In addition to causing major damage, a leaking roof can result in mold growth and other property destruction.

A leaking roof needs expert attention.Before you hire a contractor for roof repairs in Marin County, try to find the source of the problem. If you get to the root cause, you may be able to provide valuable insights to help your contractor expedite the repair process.

Here are some common causes of roof leaks during heavy rains.

Damaged Skylights

From improper installation to blocked weep holes, there are several causes of skylight leaks. Some common dangers of a leaking skylight include mold growth, compromised structural integrity, and warped wood.

If your contractor suspects skylight damage, they will examine the area around the skylight and inspect the gutters to get to the source of the problem. Depending on the nature and extent of the problem, your contractor will reseal or replace the skylight glass. If the flashings are damaged, they will be replaced as well.

Improperly Ventilated Attic

If your attic is not properly ventilated, it will allow moist hot air to collect. Excess moisture can cause the decking to dry-rot and cut short the service life of shingles.

Excess heat and moisture create the perfect breeding ground for mold and mildew. Before things turn from bad to worse, consult your contractor.

Plumbing Setup

Your home’s plumbing can make your roof prone to damage during heavy rains. Leaking pipes can cause extensive (and in some cases) undetected water damage. An experienced roofer can spot the issue before it snowballs into a major problem. It is best to have your contractor inspect your roof at least once every year.


If you have a chimney, water can fall straight into it, around the flashing, or through the masonry surface. The outer portion of a chimney can cause water to stagnate on the roof. Stagnant water can seep in through the roof. If you fail to move swiftly to address the problem, you may end up with serious structural damage.

Inadequate or Improper Maintenance

We cannot emphasize enough the importance of regular roof maintenance. Regular maintenance gives your contractor opportunities to look for and fix issues before they get out of hand.

During a maintenance session, your contractor will check your attic for signs of leaks and mold. The professional will inspect the roof for missing shingles, leaks, damaged flashing, and cracked caulk.

Is your leaking roof giving you sleepless nights? ARS Roofing, Gutters & Solar can help. We use time-tested methods designed to eliminate the root cause of your roofing issues, not just the symptoms. To discuss your roofing repair issue in Marin County with a professional, call us at (707) 584-5900.

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