If you’re considering adding a second layer of shingles to your roof instead of completely replacing it, you may want to think again. While it may seem like a quick and cost-effective solution, adding a second layer of shingles can actually cause more harm than good. Here are some reasons why:
- Added Weight
Your roof is designed to support a certain amount of weight, including the weight of your existing shingles. Adding another layer of shingles can exceed the weight capacity of your roof, putting your home at risk. Over time, the additional weight can cause your roof to sag, leading to structural damage that can be expensive to repair.
- Decreased Longevity
Shingles are designed to protect your roof from the elements and last for a certain amount of time. However, adding a second layer of shingles can significantly reduce their lifespan. This is because the extra layer traps heat and moisture, causing the shingles to wear out faster. You may think you’re saving money in the short-term, but you’ll likely end up needing to replace your roof sooner than if you had simply done it correctly the first time.
- Reduced Curb Appeal
Aesthetically speaking, a second layer of shingles can detract from the look of your home. The shingles will appear bulky and may not match the color or texture of the original shingles. This can negatively impact the curb appeal of your home and potentially lower its value.
- Voided Warranty
If your roof is under warranty, adding a second layer of shingles can void that warranty. Most manufacturers require that the shingles be installed on a clean surface, and adding another layer of shingles goes against this requirement. This means that if something goes wrong with your roof, you won’t be covered by the warranty and will be responsible for any repairs or replacements.
- Difficulty with Future Repairs
If you add a second layer of shingles to your roof, any future repairs or replacements will be more difficult and expensive. Roofers will need to remove both layers of shingles to access the underlying structure of your roof. This can be time-consuming and costly, and can also cause damage to your roof in the process.
While adding a second layer of shingles to your roof may seem like a quick and easy solution, it can actually cause more harm than good. It’s always best to consult with a professional roofer to determine the best course of action for your roof, and in most cases, it’s recommended to remove the existing shingles before installing a new roof. This will ensure the longevity and safety of your roof, as well as the value and curb appeal of your home.
Here are some additional reasons as to why it is not recommended to put a second layer of shingles on your roof for several reasons:
- Weight: Adding a second layer of shingles increases the weight on your roof. This additional weight can cause structural damage and shorten the lifespan of your roof. It can also put additional stress on your home’s foundation.
- Uneven Surface: If the existing shingles are not completely flat, putting a second layer of shingles on top will make the surface even more uneven. This can lead to water pooling and eventual leaks, as well as making it difficult to install the new shingles properly.
- Reduced Lifespan: A second layer of shingles reduces the lifespan of your new roof, as it will not last as long as a roof that has been properly installed with only one layer of shingles. This is because the added weight and uneven surface can cause the shingles to wear down and deteriorate more quickly.
- Higher Cost: While adding a second layer of shingles may seem like a cost-saving measure, it actually increases the cost of roof replacement in the long run. The added weight and reduced lifespan mean that you will need to replace your roof sooner, which can end up costing you more money in the long run.
Overall, it is always best to consult with a professional roofer to determine the best course of action for your roof. In most cases, it is recommended to remove the existing shingles before installing a new roof. Contact Rinaldi Roofing today for a consultation!