What Happens Under Your Shingles During a Rainstorm

Have you ever wondered what happens beneath your shingles during a rainstorm?

Many homeowners do not realize that a lot of the roof is not actually visible. Therefore, during a rainstorm, people do not always realize just how much of an impact is had on the roof. When water makes contact with shingles, it then runs down the roof, seeping into gutters. However, a lot takes place beneath the shingles as well.

A roof has many layers that work together to protect the home beneath. Shingles are the first layer, and the one that is most visible. Beneath them is the underlayment and roof deck.

When rain hits the roof, properly installed shingles should help direct water downward. The roof’s slope is important because it allows water to move toward the edges rather than sitting in place. However, not every drop of water necessarily behaves the way we anticipate. Wind-driven rain can move in different directions, especially during severe storms. Water can then be pushed toward areas like valleys, flashing, vents, and chimneys.

This is why the layers underneath the shingles are so important. If water gets beneath a damaged or compromised shingle, the underlayment provides an additional layer of protection. The roof deck offers another important structural layer beneath everything above it.

When roofing materials are damaged, improperly installed, or worn down over time, many problems can then take place. A missing shingle may not result in a noticeable leak inside your home, but it can leave the layers underneath much more exposed to the elements.

That is why a roof can sometimes look fine from inside the house even when something has gone wrong.

After a major rainstorm, look for visible signs of trouble. These might include missing shingles, damaged flashing, or areas where water appears to be collecting. Inside the home, keep an eye out for water stains or other signs of moisture.

If you are uncertain about the possibility of damage, call us today for a free inspection.