डिस . 28, 2024 13:03 Back to list

roll roofing over shingles

Roll Roofing Over Shingles A Practical Guide

In the realm of roofing options, roll roofing is a popular choice among homeowners seeking a cost-effective and straightforward solution. One question that frequently arises is whether it is advisable to install roll roofing over existing shingles. This article will explore the intricacies of this method, discuss its pros and cons, and provide guidance for those considering this approach.

Understanding Roll Roofing

Roll roofing is a type of roofing material that comes in large rolls, typically made from asphalt or modified bitumen. Its design is straightforward and easy to install, making it an appealing choice for DIY enthusiasts and contractors alike. Roll roofing is primarily used on low-slope roofs and is suitable for garages, sheds, and other structures where aesthetic appeal is less critical than functionality.

Is It Possible to Install Roll Roofing Over Shingles?

Yes, you can install roll roofing over existing shingles, and many choose this route for various reasons. However, there are certain factors to consider before proceeding. The condition of the existing shingles plays a crucial role; if they are deteriorating, curling, or severely damaged, it is advisable to remove them before applying new roofing materials. Installing roll roofing over compromised shingles can lead to further issues down the line, including moisture retention and reduced lifespan of the new roof.

Advantages of Installing Roll Roofing Over Shingles

1. Cost-Effectiveness One of the primary benefits of laying roll roofing over shingles is the reduced installation cost. Labor and materials are significantly less expensive than a full roof replacement, making it an economical choice for many homeowners.

2. Speed of Installation Roll roofing can be quickly installed, particularly over solid, existing materials. For homeowners requiring a fast solution—such as those with leaks or damage—this method can be highly advantageous.

roll roofing over shingles

3. Less Waste By opting to layer roll roofing over shingles, you can avoid the disposal of old materials, which is both environmentally friendly and cost-saving.

4. Add Protection Roll roofing can provide an additional layer of protection against elements such as rain and snow, enhancing the roof’s resistance to weather-related damages.

Disadvantages of Installing Roll Roofing Over Shingles

1. Increased Weight Adding roll roofing on top of existing shingles adds extra weight to the structure. It’s important to ensure that the underlying structure can support the added load; failure to do so can lead to structural issues.

2. Potential for Moisture Trapping If the existing shingles are already compromised, placing roll roofing over them may trap moisture, fostering issues like mold and rot.

3. Limited Warranty and Lifespan Many manufacturers may not honor warranties if roll roofing is installed over shingles. Additionally, the lifespan of the overall roof may be shortened compared to a full replacement.

4. Aesthetic Concerns While roll roofing is functional, it may not provide the same visual appeal as other roofing options like shingles or tiles. Homeowners should consider the look they desire for their residence.

Conclusion

Installing roll roofing over existing shingles can be a viable option for many homeowners seeking a quick and economical roofing solution. However, before taking this step, it is essential to evaluate the condition of your existing roofing materials and consult with a professional if necessary. While this method provides benefits such as cost savings and speed, it also comes with potential downsides that should be carefully weighed. Ultimately, understanding the implications of this decision will help you make an informed choice that meets your roofing needs. Whether you choose to go ahead with this option or opt for a full roof replacement, ensuring that your home is protected is what matters most.

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