How to tell if your roof shingles need replacing
If you notice algae and moss on your roof, it may be time to replace your shingles. Moss will degrade shingles and damage the roof deck. Excessive growth of algae and moss can also indicate a problem with the ventilation system and drainage system. Learn more
You should have a professional look at your roof every so often. Shingles should be lying flat against the roof. If they were not, you should consider repairing them. Another sign that you need new shingles is if you notice granules falling from your shingles in your gutters.
Broken shingles are also a problem. Not only do they look ugly, but they can also cause a leak if left untreated. A broken shingle may be a simple fix, but it can also lead to more serious problems later. For example, a satellite dish or antenna mounting bracket could cause a hole in the shingles. When this happens, remove it. Otherwise, you'll need to replace the entire roof.
You can also check for streaks or discoloration on your roof. These can be signs of structural damage and may require a new roof. Take photos of any streaks or discolorations and mark their approximate location on the roof. This will allow you to determine if you need to replace the shingles.
Another sign that it's time for a new roof is when your shingles begin to curl. Curling can lead to leaks and other issues. In addition, the edges of the shingles may not be in proper alignment, which is another sign of aging. You might also notice the shingles are losing granules.
The age of your roof is also a sign of when to replace the shingles. If your roof is more than 20 years old, it might be time to upgrade to a higher quality roofing material. Asphalt shingles are a common choice for homes, but there are other materials that will last much longer. Clay/concrete and slate are great choices for longer term durability.
A poorly-insulated roof can cost you a fortune in energy bills. A poorly-insulated roof can also be a sign of an aging roof. If you're lucky, your roof may still have 15 or 20 years of useful life. Three-tab shingles, for example, can last for up to 25 years. Architectural shingles, on the other hand, can last as long as 30 years.
You may also notice moss growing on your roof. Moss is another sign that your shingles are nearing their end. It retains moisture and can cause rot. If you notice moss on your roof, it's time to get rid of it. Another great read
If your home has dormers, you should check their caulk. The caulk under the flashing can deteriorate and cause the flashing to come apart, allowing water to penetrate into the house. The result of a loose flashing is water seepage, mold and mildew growth, and rotted wood. If left unchecked, this could lead to irreparable damage to the roof structure.