roll roofing over existing shingles

Rolling Out a New Roof The Case for Roof Over Existing Shingles

When it comes to roofing maintenance and replacement, homeowners often find themselves contemplating the most efficient way to protect their property without incurring exorbitant costs. One of the increasingly popular solutions is the practice of rolling out new roofing over existing shingles. This method can provide significant benefits, but it is essential to understand both its advantages and certain considerations before proceeding.

What is Roof Over Existing Shingles?

Rolling roofing over existing shingles, often referred to as overlay or re-roofing, involves placing a new layer of roofing material on top of the old shingles. This technique is typically applied using materials such as asphalt roll roofing, which is lightweight and easy to install. The decision to roll over existing shingles can save time and reduce labor costs, making it an attractive option for many homeowners.

Benefits of Rolling Out New Roofing

1. Cost-Effective Solution One of the most significant advantages of roofing over existing shingles is cost savings. Removing existing shingles can be labor-intensive and costly, as it often requires hiring professionals and renting equipment. By opting for an overlay, homeowners can save on disposal fees and labor costs associated with tear-off.

2. Time Efficiency Reroofing is typically a faster process than a full roof replacement. The installation of roll roofing on top of existing shingles can often be completed within a single day, depending on the size of the home. This efficiency means less disruption for homeowners and quicker protection against the elements.

3. Minimal Environmental Impact Tossing old shingles in a landfill is not only wasteful but also detrimental to the environment. By choosing to overlay, homeowners can lessen their environmental footprint since fewer materials are discarded. Additionally, existing shingles can serve as a buffer, providing additional insulation.

4. Improved Aesthetics When done correctly, rolling new roofing can rejuvenate the appearance of a home. Whether updating to a more modern material or simply refreshing the color, an overlay can enhance curb appeal without the extensive labor of a full roof replacement.

Considerations Before Proceeding

Despite its benefits, there are several factors to carefully consider before deciding to roll roofing over existing shingles

1. Building Codes and Regulations Before initiating an overlay, homeowners should consult local building codes. Many jurisdictions have restrictions on the number of roofing layers allowed. Generally, you can't have more than two layers of roofing material, and some areas may require a full tear-off.

2. Roof Condition It is crucial to assess the condition of the existing shingles. If the roof is showing signs of significant damage—such as curling, buckling, or missing shingles—overlaying might not be the best option. A poor roof foundation could compromise the new roofing layer, leading to leaks and further deterioration.

3. Weight Adding additional layers to a roofing system increases its weight, which may be an issue for older structures not designed to support extra loads. Consulting with a structural engineer can help determine if the home can bear the added weight.

4. Ventilation Proper ventilation is vital for any roofing system to prevent excessive heat buildup and moisture accumulation, which can lead to mold growth and structural damage. In many cases, roof overlays can hinder ventilation, so homeowners should ensure that their roofing design allows for adequate airflow.

5. Professional Consultation Engaging a roofing professional can provide valuable insights and assess whether rolling out new roofing is the best choice for your situation. They can also help ensure that the project meets all necessary safety and building standards.

Conclusion

Rolling roofing over existing shingles presents a viable option for homeowners looking to save time and money while enhancing their home's appearance. However, it’s essential to consider factors such as local regulations, the condition of the existing roof, and the overall structural integrity of the home before proceeding. With proper planning and professional assistance, this roofing method can provide a quick and effective solution to roofing challenges, ensuring that your home remains well-protected for years to come.