You may need a new roof if it has been more than 15 or 20 years since the last time you had one installed. The average shingle roof lasts two to four decades before it needs replacing.
However, shingle roofs don't always last even that long depending upon the types of conditions that they have been exposed to. That's why you should be able to identify if your roof is fast approaching the end of its useful lifespan.
Granular Particles in Gutters and on Ground
Shingle roofs contain say covering of small granular particles made from crushed ceramic or natural materials. Though these particles are tiny, they serve a useful purpose by preventing damage to the underlying asphalt and composition materials. Without the granular layer, shingles quickly will deteriorate under the hot sun and other climate conditions.
If you notice bald spots where the granular materials are missing, then you should suspect the layer is thinning, and the shingles are nearing the end of their useful life. A pair of binoculars can help you observe them without having to climb a ladder to inspect the shingles up close.
In addition, take a look at your rain gutters for the presence of granular material. If you notice a substantial amount of fine white or gray particles, this is also an indicator your shingles are shedding their protective covering.
If your home does not have rain gutters, take a look at the area beneath the drip line of the eaves. This is where the small grains will accumulate; contact a qualified roofer for help if you notice a substantial amount on the ground.
Torn or Cracked ShinglesAnother sign your shingle roof may be at the end of its life is the presence of torn, cracked, or curling shingles.The asphalt inside the shingle gradually dries out over time, and this leaves the shingles fragile and brittle.
The sun will heat up shingles and cause them to expand; since there is a lack of pliability, they will crack and eventually tear. Also, the wind will force the corners of the shingles to curl upward, and they will not naturally lie down again due to a lack of internal flexibility.
This means your shingles will become loose around the roofing nails that tack them down and may tear out altogether. Even if they don't tear away, water can work its way underneath the upraised corners and through the cracks in the shingles. A limited amount of cracking maybe repairable with roofing cement, but a roofing contractor will be able to evaluate the extent of the wear and if this is possible.
Recent Severe Storm Damage in Area Even if you don't notice anything wrong with your shingles, the presence of a recent severe storm in your area may indicate your roof has suffered damage. For example, if you have received hail that is an inch or greater in diameter, tropical storm force winds, or nearby tornado activity, you should suspect your roof was damaged by the widespread weather event.
Also, look at neighboring homes and take note of roof replacements that are underway. A significant amount of homes in your area undergoing re-roofing is a possible sign your home should be next in line for roof work. Take a few moments to perform some of the above inspection steps, or contact a local roofer who can provide guidance. In the Vacaville area, Cal Roofing Systems, Inc. is ready and willing to help you with all of your roofing needs.
