Installing Rolled Roofing Over Existing Shingles for Enhanced Protection and Durability

Rolling with Roofing Installing Rolled Roofing Over Shingles

When it comes to roofing, homeowners often find themselves weighing their options between various materials and installation methods. One solution that frequently arises is the use of rolled roofing over existing shingles. This approach can be practical and cost-effective, but it necessitates careful consideration to ensure a successful outcome. In this article, we'll explore the benefits, potential drawbacks, and essential steps involved in installing rolled roofing over shingles.

Understanding Rolled Roofing

Rolled roofing is a type of roofing material that typically comes in large rolls, making it easy to install over expansive surfaces. It is often made from asphalt, providing a durable, weather-resistant layer that can effectively protect the underlying structure from the elements. Unlike traditional shingles, which are installed individually, rolled roofing allows for quicker installation, making it an appealing option for many homeowners.

Benefits of Installing Rolled Roofing Over Shingles

1. Cost Efficiency One of the most significant advantages of rolled roofing is its cost-effectiveness. When applied over existing shingles, homeowners can avoid the labor and disposal costs associated with removing the old roofing material. This makes rolled roofing a budget-friendly option, especially for those looking to extend the life of their roofs without breaking the bank.

2. Speed of Installation The installation process for rolled roofing is generally quicker than that of individual shingles. Because rolled roofing comes in wide sheets, it requires fewer seams and less time to lay down, making it an attractive solution for those needing a speedy roofing fix.

3. Weather Resistance When properly installed, rolled roofing can provide excellent protection against rain, snow, and other weather conditions. This layered system can help prevent leaks and water damage, particularly for flat or low-slope roofs.

4. Extended Roof Life By installing rolled roofing over existing shingles, homeowners can prolong the lifespan of their roofs. The rolled layer acts as an additional protective barrier, shielding the shingles beneath from UV rays and weathering, potentially delaying the need for a more extensive roofing overhaul.

Potential Drawbacks

While there are many benefits to installing rolled roofing over shingles, some drawbacks must also be considered

1. Weight Concerns Rolled roofing adds an extra layer of material, which can increase the overall weight of the roof. For buildings not constructed to support this additional weight, this could pose structural risks.

2. Moisture Trapping If the existing shingles are damaged or allow moisture to penetrate, rolling roofing over them can trap moisture underneath, leading to mold, rot, or further deterioration. It’s crucial to ensure the shingles are in good condition before proceeding.

3. Aesthetic Considerations Rolled roofing tends to have a more utilitarian appearance compared to traditional shingles. Homeowners aiming for a visually appealing roof might find rolled roofing less desirable from a curb appeal standpoint.

Installation Steps

If you decide to proceed with installing rolled roofing over shingles, follow these essential steps

1. Inspect the Existing Roof Before you begin, conduct a thorough inspection of your existing shingles. Look for curling, cracking, or significant wear. If you identify any problems, it may be best to repair them first.

2. Clean the Surface Remove debris, dirt, and any loose granules from the shingles to ensure a smooth surface for the rolled roofing to adhere to.

3. Choose the Right Material Select high-quality rolled roofing material with appropriate weather resistance for your climate.

4. Install Underlayment For added protection and to ensure a smoother surface, consider installing a layer of underlayment over the shingles. This can also help with moisture prevention.

5. Roll Out the Roofing Start at the lowest point of the roof and roll out the roofing material, overlapping seams by at least 6 inches. Secure the material with roofing nails or adhesive as recommended by the manufacturer.

6. Sealing and Finishing After laying down the rolled roofing, ensure all edges are sealed, and any seams are appropriately covered to prevent water infiltration.

Conclusion

Installing rolled roofing over shingles can be an effective and economical way to extend the life of your roof, provided you take the necessary precautions and follow the correct installation procedures. With careful planning and execution, this roofing solution can keep your home dry and protected for years to come. Always consult a professional if you're unsure about any aspect of the process, and enjoy the benefits that come with a well-constructed roof.