Roof Leaks in Heavy Rain – Common Causes

Roof Leaks in Heavy Rain – Learn Why

Even if your roof is well-maintained or fairly new, heavy rainfall is still a cause for concern. The areas of your roof that are prone to pooling water can lead to a leak during heavy rain. Not to mention, your gutters simply may not be able to keep up with the downpour. Read on to discover the most common causes of roof leaks in heavy rain.

Your Skylight

It is not uncommon for skylights to leak during heavy rains. This does not necessarily mean the skylight is damaged, but that the condensation from the rain and runoff has a higher chance of leaking through.

Roof Leaks in Heavy Rain

Caulking has left gaps that rainwater is seeping into. image: pinterest

In most cases, placing a bucket under the leak will do as a temporary fix. After the rain stops, find a roofing inspector immediately to assess the damages from the leak.

Elite Roofing owner has a background in home inspections and helps homeowners to find out if filing a claim is necessary, and helps to walk you through the claim process. Check with your local roofing contractor to talk about the insurance claim process.

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Flat Roofs

Some flat roofs lack the drainage required to keep up with heavy rainfall. If your roof lacks proper drainage, this is an excellent place to begin improvements. Here are two easy ways homeowners can take roof leaks in heavy rain into their own hands:

  • Add gutters and downspouts so that roof water runoff drains away from the foundation
  • Clean out debris from gutters and downspouts; repair or replace leaking/damaged sections


Home and business owners with flat roofing must also ensure their roof is properly sealed and that all eaves and flashings are in good standing. This means that seasonal roof inspections cannot be allowed to fall by the wayside.

Keep in mind that flat roofs don’t always leak in the same manner as roofs with more shape. Instead, you may find drip marks down a large area of your walls or a wet spot on the ceiling.

Water can also accumulate around the perimeter foundation of the home or building. This sitting water can seep through cracks, siding or foundation walls making lower levels, like the basement or crawl space, wet or damp.

Chimney Flashing Leak

How chimney flashing perfectly seals and protects from water damage during rain. image:milleniumhome

Chimney Leaks

Chimneys are designed to do an adequate job of keeping the elements out, however, your chimney may be the cause of your leaking roof. Homes with chimneys are commonly facing problems with roof leaks in heavy rain.

The outer structure of your chimney often retains water, which can make the roof leak in a hard rain. You must also make sure the shingles and flashing surrounding the chimney are in proper working order.

The flashing is a piece of sheet metal that covers the overlapping areas of the chimney and roof. Two layers of flashing are applied to the chimney and roof, and a sealed with high-quality urethane caulk. Naturally, this caulk becomes loose over time and creates a pocket for rainwater to seep in. Often times reapplying the caulking could work as chimney leak repair, but flashing may need additional maintenance and a trained eye.

Plumbing Leaks

If you have any vent caps for ventilation exhaust fans on your roof, they may be the source of your leak. Before you climb on the roof to look for leaks, make sure your bath fan duct is insulated. A fan duct that is not properly insulated will moisten the air. This leads to condensation in the duct. Look out for moisture building in the bathroom walls, or within the attic.

roof leaks in heavy rain

Looking for wet or dark spots when searching for a bathroom exhaust fan leak. image:checkthishouse


How To Fix A Leaking Roof From The Inside

If you see that your roof is leaking, then you want to address the problem as soon as possible. During a storm or colder winter months, jumping onto the roof to inspect the problem is not practical, let alone safe.

What temporary fixes can you make to repair a leaking roof from the inside?

  • Start by sealing the leak. Find the leaking area in the attic or crawl space and mark the spot for later. Patching material will not adhere properly if the area is wet.
  • Use buckets to temporarily collect any dripping water.
  • If the area is dry, use caulk or putty to seal the area.

Roof Leaks in Heavy Rain

Having an active leak during heavy rainfall can be daunting. Rid the stress by calling your roofing repair experts, Elite Roofing and Consulting. We will help you to identify where the leak is coming from, what may have caused it, how we’ll fix it, and how to prevent it from happening again.

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Reggie Green

Reggie Green is the founder of Elite Roofing and Consulting, a residential and commercial roofing contractor based in Dallas, Texas. A former insurance adjuster – licensed in 14 states, Reggie has made it his mission to bring honesty, integrity, and top notch customer service to the roofing industry. Reggie resides in Dallas with his wife and three daughters.

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