Common Causes of Roof Leaks – Family Roofing

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Common Causes of Roof Leaks

 

Whether you have a new roof or a roof well-maintained, heavy rain 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.  Additionally, your gutters may not be able to handle the downpour.

1. Leaking 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.  After the rain stops, find a roofing professional immediately to assess the damages from the leak.

2. 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 some easy ways homeowners can take things into their 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.

3. Chimney Leaks

Chimneys are designed to do an adequate job of keeping the elements out, but your chimney could be the cause of your leaking roof.  Homes with chimneys are commonly facing problems with roof leaks.  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 is applied to the chimney and roof, and a sealed with a high-quality urethane caulk.  Naturally this caulk becomes loose over time and creates a pocket for rainwater to seep in.  Often reapplying the caulking could work as chimney leak repair, but flashing may need additional maintenance and a trained eye.

4. 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.