When it comes to roofing, one of the most debated topics among homeowners and roofing contractors alike is whether to install a second layer of shingles over an existing one. While some see it as a cost-effective and time-saving solution, others argue against it due to potential long-term issues. Let’s delve deeper into this topic to provide a clear perspective.

Advantages of Roofing Over Existing Shingles

1. Cost-Effective Solution

Installing a second layer of shingles can be more affordable for homeowners. By avoiding the removal of the original layer, there’s a reduction in waste, which translates to lower dump fees. Additionally, the labor costs associated with tearing off the old roof and cleaning up the debris are eliminated.

2. Convenience for Both Parties

For roofing contractors, the process becomes more straightforward as there’s no need for a tear-off. Homeowners also benefit as there’s minimal risk of damage to their landscaping or potential hazards from roofing debris.

3. Time-Saving Approach

Without the need for a tear-off, the installation process is expedited. If the current roof is in decent condition without active leaks, the work is completed much faster.

Disadvantages of Installing a Second Layer

1. Voided Manufacturer’s Warranty

Most shingle manufacturers will void the warranty if shingles are installed over an existing layer. This can be a significant drawback for homeowners looking for long-term protection.

2. Doesn’t Address Underlying Issues

If a roof has experienced issues like ice damming, simply adding another layer of shingles might not resolve the problem. Proper insulation and the right underlayment are essential to prevent such issues.

3. Reduced Shingle Lifespan

An additional layer can lead to increased heat absorption, which can reduce the lifespan of the shingles. Over time, this can lead to warping, blistering, and granule shedding.

4. Increased Weight on the Structure

A second layer of shingles adds significant weight to a home’s structure. This can be a concern, especially in areas prone to heavy snowfall.

5. Potential for Trapped Moisture

Moisture trapped between the shingle layers can lead to roof decking damage, insulation issues, and mold growth.

6. Challenges in Future Repairs

Should the roof require repairs in the future, addressing two layers can be labor-intensive and costly.

Conclusion

While there are some advantages to roofing over existing shingles, the potential long-term issues cannot be ignored. If you’re considering this option, it’s crucial to consult with a reputable roofing company in Albany NY, such as Home Evolution, to ensure the best outcome for your home. Remember, making an informed decision now can save you from potential headaches and expenses in the future.