Rainstoppers Roofing in Charleston, WV cautions homeowners against layering new shingles over existing ones. Although it might seem like a cost-effective option, adding a second layer can lead to numerous issues down the line. Below, we explore the reasons why removing old shingles is the safer and more reliable approach.
1. Poor Aesthetic Appeal
Installing a second layer of shingles creates a bulky, uneven look, particularly when the first layer has curls or damage. Shingles are designed to be laid on flat surfaces, and laying new shingles over old ones causes bumps and lumps. This not only detracts from curb appeal but also impacts the integrity of the new layer, increasing the likelihood of improper attachment.
2. Concealed Roofing Problems
Installing new shingles over a damaged layer traps moisture, leading to increased issues such as wood rot, mold, and mildew. This practice can accelerate deterioration and compromise the roof’s structural integrity. Over time, this cover-up leads to moisture retention, mold growth, and wood rot in the decking. In the long run, the damage beneath remains unchecked, making future repairs more complex and costly. Removing the first layer allows roofers to address any underlying damage and ensure a solid foundation.
3. Excessive Weight on the Structure
Roofing materials are heavy, and adding another layer significantly increases the load on the structure. Most homes, particularly older ones, aren’t designed to bear this extra weight. This added stress can cause structural damage, sagging, or even collapse in areas with heavy snow. The increased weight from a second layer is especially concerning in regions prone to snowfall, as it reduces the roof’s load-bearing capacity.
4. Negative Impact on Property Value
Homes with double-layered roofs typically receive negative marks on inspection reports, especially if a sale is imminent. Inspectors often flag these roofs as potential issues, knowing that buyers will face higher repair costs due to the need for a full tear-off. For homeowners planning to sell, it’s better to invest in a proper replacement rather than risk deterring buyers with a temporary fix.
FAQs on Double-Layer Shingle Roofs
- Is it cheaper to add a second layer of shingles?
While adding a second layer may reduce upfront costs, it often leads to more expensive repairs later due to hidden damage. - Can a second layer of shingles void warranties?
Yes, many manufacturers void warranties on roofs with double layers due to increased wear and lack of inspection access. - What are the structural risks of adding a second layer?
The additional weight stresses the roof structure, especially in older homes, and can cause sagging or collapse. - Does a second layer affect energy efficiency?
Yes, trapped heat between layers reduces energy efficiency, making it harder to cool or insulate the home. - How does a double layer impact resale value?
A double-layered roof may reduce resale value as buyers view it as an indication of improper maintenance.
Conclusion
Though installing a second layer of shingles may seem convenient, it compromises your roof’s durability, appearance, and structural integrity. For lasting results, homeowners should consider a complete tear-off before adding new shingles. At Rainstoppers Roofing, we specialize in high-quality roof replacements to ensure your roof remains secure and attractive for years to come.To learn more about avoiding common commercial roofing mistakes, click here.
