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What Is Your Roof Trying To Tell You?

8 Things Your Roof Is Trying to Tell You​

Missing shingles, granules filling the gutters, water stains on the ceiling after rainstorms-they all point to roofing problems. Pay attention to these warning signs and act before the problem gets worse and more expensive to fix.

Problem 1: Water Spots on your Ceiling

What the Roof is Trying to Tell You: The roof has a leak, which can be tricky to pinpoint. “A slow leak is harder to find than a big leak,” says Joan Crowe, director of technical services for the National Roofing Contractors Association (NRCA). “If it’s just a couple of drips, it can be hard to find.”What can make a leak especially difficult to locate is the fact that water doesn’t necessarily drip straight down. It can travel along roof panels or lumber in the attic before dripping onto your insulation and leaving the telltale yellow water spot on your ceiling. That means the leak can be far away from where the ceiling shows damage. Unless you have good detective skills when it comes to roof leaks, you’ll want to enlist a roofing contractor to help track down the cause of the problem.

Crowe points out that water spots on the ceiling don’t automatically mean the roof is leaking. “It could be caused by windows, condensation, plumbing, or even condensation on the plumbing pipes,” she says. However, if the spots only appear, darken, or grow in size after it rains, the roof is likely the culprit.

Problem: Water Spots Appear on Exterior Walls

What the Roof is Trying to Tell You: The step flashing where the roof meets a wall is loose, rusted, or otherwise damaged.As with water spots on the ceilings, if the damage appears or gets worse after rain, the problem is most likely the flashing. Replacing step flashing can be tough, because it has to integrate with the roof and adjacent siding, so roofing skills are needed to tackle this job and stop the leak. One other possibility: Crowe says places where two different siding materials butt together and leave gaps or leaky windows could also be to blame.​

Problem: Your Gutters are Filed with Granules and Wash out the Downspouts

What the Roof is Trying to Tell You: The shingles are deteriorating or reaching the end of their lifespan.”Granules do come off, and they do collect in the gutters,” Crowe says, adding that some loose granules are not necessarily a cause for concern. However, if you suddenly notice a lot of the granules flowing out of the downspouts every time it rains, the next step is to get on a ladder and examine the shingles to see if they look “exposed” because most of the granules are gone.

Granules protect against the sun’s UV rays, so once they’re gone, the shingles can become brittle. In extreme cases, shingles can have smooth or bald spots where all of the granules have completely fallen off.

Losing the granules often means the shingles are old. “The shingles are aging,” Crowe says. “They’re near the end of their service life.” And that means you’ll need to replace them. Before you start the project yourself or call a pro to get a quote, Crowe recommends calling the manufacture to see if the shingles are still under warranty.

Problem: Cracking Shingles

What the Roof is Trying to Tell You: The granules have probably worn off, allowing the shingles to become brittle. They probably need to be replaced.Another symptom of the same disease. Perhaps you didn’t notice the granules washing away, but if you see signs of cracking in your shingles, then it probably means they are being exposed to direct sunlight and are wearing out. “The shingles are approaching the end of their service life,” Crowe says. “Asphalt shingles don’t like heat.”

Again, check whether your shingles are warrantied, especially if they’re not supposed to be near the end of their lifespan but you’re seeing cracks nonetheless.

Problem: Shingles are Cupping

What the Roof is Trying to Tell You: The attic may not be properly vented, and you might need to reshingle.When shingles get old and worn out, the ends sometimes start to cup—the corners turn up or the shingles look wavy. An attic that’s not vented properly can exacerbate this problem. If the attic gets too hot, it can heat up the roof, which consequently heats up the underside of the shingles. The heat can cause the shingles to age faster and start to cup. Eventually, that can allow wind-blown rain to work its way under the shingles and leak into the house.

Crowe says that the age of the shingles is more of factor than a hot attic when it comes to cupping or wavy shingles. “There’s no data that shows cupping is solely based on the attic being too hot,” she says. “The attic may contribute to the problem, but it won’t cause the problem by itself.”

Problem: The Roof is Missing Shingles

What the Roof is Trying to Tell You: You might have a critter getting on your roof, or the sealant strip under the shingles may have been damaged.A furry animal scurrying around on your roof could be responsible for loose or damaged shingles, Crowe says. “A critter can really do some damage.” If tree branches are near or touching the roof, they can provide a pathway for animals. So trim them back.

Shingles have a sealant on their underside that helps hold the shingles in place, Crowe explains. If the shingles become old and brittle, the sealant can fail and the shingles, even when nailed down properly, can come loose in severe winds. “It really takes a good wind to knock them off,” Crowe said.

When shingles do come loose, they need to be replaced. “Singles rely on an overlapping pattern to keep out water,” Crowe notes. If missing shingles interrupt that pattern, water can leak into the house.

Problem: The Roof Leaks when the Temperature Fluctuates Between Warm and Freezing

What the Roof is Trying to Tell You: You probably have ice dams. Ice dams are caused by freeze-and-thaw cycles that allow ice to build up on the roof and block melting snow from draining off. That backed-up water can get under the shingles and leak inside. Ice dams can form in as little as 1 or 2 inches of snow.”It’s hard to do anything about them after the fact,” Crowe says. Newer roofs typically have an ice-and-water barrier installed along the eaves, where the dams typically form, to prevent the water from leaking inside. There are ice-dam cables you can install on your roof, which heat up to prevent ice dams from forming at the eaves. But the National Roofing Contractors Association does not endorse them. “You’re combining water and electricity, which is never a good idea,” Crowe points out. “You’re also heating the roof, which isn’t good.”

Ensuring the attic is well-insulated can help prevent the dams from forming, because it helps to stop warm air from escaping into the attic and melting the snow on the roof. Proper attic ventilation can also prevent them by keeping the attic cooler

Problem: There are Black Stains on the Roof

What the Roof is Trying to Tell You: There are algae growing on the shingles.Although this looks ugly, it doesn’t create other problems with the roof. “It’s an aesthetic thing,” Crowe said. She doesn’t recommend cleaning the shingles with a power washer. “It’s so powerful that it might take off the granules.”

Placing zinc strips near the ridge of the roof that release a fungicide when it rains can kill the algae. Or you can replace your existing shingles with algae-resistant ones the next time you re-roof.