roll roofing over existing shingles

Roll Roofing Over Existing Shingles A Practical Guide

When it comes to roofing, homeowners often face the dilemma of replacing their old shingles or finding a more cost-effective solution. One option that has gained popularity in recent years is roll roofing over existing shingles. This method not only simplifies the roofing process but also can save time and money. In this article, we will explore the advantages, steps, and considerations involved in roll roofing over existing shingles.

Understanding Roll Roofing

Roll roofing is a type of roofing material that comes in rolls rather than shingles. It is typically made from asphalt and is designed for low-slope roofs. Roll roofing is lightweight, relatively inexpensive, and easy to install, making it an attractive option for DIY enthusiasts and homeowners looking to minimize labor costs.

Advantages of Roll Roofing

1. Cost-Effective One of the most significant benefits of roll roofing is its affordability. The materials are less costly than traditional shingles, allowing homeowners to save money on both materials and installation.

2. Quick Installation Roll roofing can be installed much faster than traditional shingles. Since it is applied in large sheets, the process can be completed in a fraction of the time, reducing labor costs even further.

3. Minimal Disruption Installing roll roofing over existing shingles typically results in less mess and disruption to the household. There’s no need to remove the old shingles, which means fewer debris and a quicker turnaround.

4. Added Layer of Protection By installing roll roofing over existing shingles, you create an additional layer of protection against the elements. This can be particularly advantageous in areas prone to heavy rain, snow, or extreme heat.

5. Improved Energy Efficiency Some roll roofing materials are designed to reflect sunlight, which can potentially lower cooling costs during the hot summer months.

1. Assess the Condition of Existing Shingles Before installing roll roofing, carefully inspect the existing shingles. Look for any signs of damage, such as curling, missing shingles, or leaky areas. If the overall condition is acceptable and there’s no rot or severe damage, you can proceed with the installation.

2. Gather Necessary Materials You will need roll roofing material, roofing adhesive, roofing nails, a utility knife, a measuring tape, and possibly an underlayment for added moisture protection.

3. Prepare the Surface Ensure that the area is clean and free of debris. If there are any protruding nails or sharp edges, make sure to flatten or cover them to avoid damage to the new roofing.

4. Install Underlayment (Optional) While not always necessary, installing an underlayment can provide an additional waterproof barrier. If you choose to use one, lay it over the existing shingles according to the manufacturer's instructions.

5. Measure and Cut Measure the sections of the roof that need covering and cut the roll roofing to size using a utility knife. Be sure to leave a little extra at the edges for overlap.

6. Apply Roll Roofing Starting at one end of the roof, lay the roll roofing down and use roofing adhesive to secure it in place. Ensure that each strip overlaps the previous one by at least a few inches to prevent water intrusion.

7. Secure the Edges Use roofing nails around the perimeter and throughout the rolls to ensure that the material is secure and can withstand strong winds.

8. Finish the Edges Trim any excess material from the edges and seal all seams and edges with additional roofing adhesive for added protection against moisture.

Considerations

Before deciding to install roll roofing over existing shingles, it's essential to consider local building codes and regulations. Some areas have specific rules regarding roofing layers, and you may need to check with local authorities before proceeding. Additionally, while roll roofing is a great option for low-slope roofs, it may not be suitable for steeply pitched roofs.

Conclusion

Installing roll roofing over existing shingles can be a smart and practical solution for homeowners seeking an economical roofing option. With the right preparation and materials, this project can be a manageable DIY task that enhances the protection and efficiency of your home. Always ensure that you consult with professionals or local building codes as needed, and enjoy the benefits of your new roof!