Installing Roll Roofing Above Asphalt Shingles for Enhanced Weather Protection and Durability

Rolling Roofing Over Shingles A Comprehensive Guide

When it comes to roofing options, homeowners often find themselves caught between cost, durability, and aesthetic appeal. One method that has gained traction in recent years is the practice of installing rolled roofing over existing shingles. While this might seem like a quick fix, there are several factors to consider, including the benefits, limitations, and the installation process. This article will explore the ins and outs of rolling roofing over shingles to help you make an informed decision.

Understanding Rolled Roofing

Rolled roofing is a material that comes in large rolls, typically made from asphalt. It is often used for low-slope roofs and is prized for its ease of installation and relatively low cost. The material is lightweight, making it a favorite among DIY enthusiasts and professional roofers alike. Rolled roofing can provide a watertight seal and is available in various colors, which adds some aesthetic versatility.

Benefits of Installing Rolled Roofing Over Shingles

1. Cost-Effectiveness One of the most significant advantages of rolling roofing over existing shingles is the cost savings. Since you won’t have to remove the old shingles, you can save on labor and disposal costs. In many cases, the installation of rolled roofing can be completed in a fraction of the time compared to a complete roof replacement.

2. Time Efficiency For homeowners looking for a quick solution to roof leaks or wear and tear, rolling roofing provides an expedient answer. The installation can often be completed in a single day, allowing you to protect your home from the elements without lengthy delays.

3. Added Protection Installing rolled roofing can offer an additional layer of protection over your existing shingles. This can be particularly beneficial if your shingles are aging or showing signs of wear. The rolled roofing acts as a barrier against water infiltration, providing peace of mind during heavy rain or snow.

4. Simplicity of Installation For many DIYers, the installation process of rolled roofing is straightforward. The material can be easily rolled out, cut to size, and secured with roofing nails or adhesive. This simplicity appeals to those who want to take on a roofing project themselves.

Limitations and Considerations

While there are several advantages, it’s essential to consider the limitations and challenges of rolling roofing over shingles.

1. Weight Concerns Adding rolled roofing over existing shingles can increase the overall weight on your roof. Most roofs are designed to handle a specific weight load, and exceeding that limit can lead to structural issues. It’s recommended to consult with a roofing professional to ensure your roof can support the additional weight.

2. Warranty Issues In some cases, adding rolled roofing over shingles may void the warranty on your existing roof. It’s always wise to check with your roofing manufacturer or contractor before proceeding.

3. Ventilation and Moisture One key concern is moisture retention. If water gets trapped between the shingles and the rolled roofing, it can lead to mold growth and further deterioration of the shingles. Proper ventilation is crucial, and it’s vital to ensure that any existing moisture issues are addressed before installation.

4. Aesthetic Limitations While rolled roofing comes in a variety of colors, it may not provide the same visual appeal as traditional shingles. Homeowners should consider whether aesthetics play a significant role in their roofing choices.

Installation Process

If you decide to proceed with rolling roofing over shingles, here are some general steps to follow

1. Inspect the Existing Roof Before installation, thoroughly inspect the shingles for any damage, such as cracks, missing shingles, or significant wear.

2. Clean the Surface Remove any debris, leaves, or dirt from the roof’s surface to ensure a proper seal.

3. Measure and Cut the Material Measure your roof and cut the rolled roofing to the necessary lengths.

4. Install the Rolled Roofing Start at the base of the roof and unroll the material, overlapping each section as you go. Secure it with nails or adhesive as per the manufacturer's guidelines.

5. Seal the Edges Ensure that all seams and edges are properly sealed to prevent water intrusion.

Conclusion

Rolling roofing over shingles can be a practical solution for homeowners looking to extend the life of their roofs while minimizing costs and installation time. However, prospective installers must weigh the benefits against the limitations and ensure that they address any potential issues beforehand. By considering both the advantages and challenges, you can determine whether this roofing option is the right choice for your home.