roll roofing over existing shingles

Roll Roofing Over Existing Shingles A Practical Guide

When it comes to roofing solutions, homeowners often face the dilemma of maintaining their homes without undergoing a complete roof replacement. One popular option that has gained traction in recent years is the use of roll roofing over existing shingles. This method not only saves time and money but also acts as an efficient way to extend the lifespan of your roof. In this article, we will explore the benefits, considerations, and step-by-step process of installing roll roofing over existing shingles.

Benefits of Roll Roofing

1. Cost-Effective One of the most significant advantages of using roll roofing is cost savings. Traditional roofing materials and labor can be costly, particularly if the existing shingles are in good condition and merely need a protective covering. Roll roofing, being less expensive, provides an economical alternative.

2. Time-Saving The installation process is relatively quick. It requires minimal preparation compared to a full roof replacement, making it an attractive option for homeowners who need an urgent solution.

3. Easy to Install Roll roofing is lightweight and comes in large sheets, making it easier to handle and install. This ease of application means that even DIY enthusiasts can take on the project with relative confidence.

4. Weather Resistance With the right materials, roll roofing can provide effective protection against various weather conditions, including UV rays, rain, and wind. This durability helps shield your home from potential water damage and other environmental factors.

5. Aesthetic Options Available in a range of colors and finishes, roll roofing can enhance the appearance of your home while providing a functional barrier. Many homeowners appreciate the clean and simple look that roll roofing can offer.

Considerations Before Installation

Before deciding to install roll roofing over existing shingles, there are a few factors to consider

1. Condition of Existing Shingles It's essential to examine the existing shingles for any signs of damage or deterioration. If the shingles are severely compromised or have significant sagging, a complete roof replacement may be necessary.

2. Local Building Codes Always check your local regulations regarding roofing installations. Some areas may have specific codes concerning the number of roofing layers allowed or materials used.

3. Weight and Drainage Adding roll roofing over existing shingles increases the weight on your roofing structure. Ensure that the underlying structure is sound and that there is proper drainage to prevent water pooling.

4. Ventilation Adequate ventilation is crucial for extending the life of your roof. Ensure that installing roll roofing does not hinder airflow, as this can lead to moisture buildup and subsequent damage.

Step-by-Step Installation Guide

1. Preparation Begin by inspecting the existing shingles. Remove any loose debris, such as leaves or branches, and ensure the roof surface is dry.

2. Repair Damaged Areas Fix any visible issues with the existing shingles before proceeding. This may include replacing cracked or missing shingles.

3. Install Underlayment Lay down a protective underlayment over the existing shingles. This barrier will provide additional protection against moisture.

4. Unroll and Cut Start unrolling the roll roofing material from the bottom edge of the roof. Cut to the desired length, ensuring that it overlaps appropriately with other sheets.

5. Secure the Material Use roofing cement or nails to secure the roll roofing in place. Ensure that you follow the manufacturer’s instructions for the best results.

6. Finish Up After securing the material, trim any excess and ensure that all edges are sealed.

Conclusion

Installing roll roofing over existing shingles presents a practical solution for homeowners looking to save time and money while enhancing their roof's durability. By considering the factors mentioned and following the proper installation steps, you can significantly expand the protection your home receives from the elements. Whether you choose to hire a professional or take on the project yourself, roll roofing can be a valuable addition to your home maintenance strategy.