rolled roofing over shingles

Rolling Out a New Roof Is Rolled Roofing Over Shingles a Good Idea?

When it comes to roofing choices, homeowners are often faced with a myriad of options. Among these, the use of rolled roofing materials stands out, especially for those considering installing it over existing shingle roofs. Rolled roofing is a cost-effective and time-efficient solution, but is it the right choice for your home? In this article, we’ll delve into the pros and cons of rolled roofing over shingles to help you make an informed decision.

Understanding Rolled Roofing

Rolled roofing is a type of roofing material that comes in large rolls rather than individual shingles. Often made from asphalt, rolled roofing is typically used in low-slope roofing applications, including sheds, garages, and other structures. However, some homeowners consider using rolled roofing on their primary residences, particularly as a means to cover existing shingles.

Advantages of Installing Rolled Roofing Over Shingles

1. Cost-Effectiveness One of the most significant advantages of using rolled roofing is its affordability. Compared to traditional shingles, rolled roofing is less expensive and can be an attractive option for tight budgets or for those who are looking to manage costs during home renovations.

2. Ease of Installation Installing rolled roofing over shingles can be a straightforward project for those who are handy. Since the existing shingles provide a solid foundation, there’s no need for a complete tear-off, which can save both time and labor costs.

3. Reduced Waste When installing rolled roofing over shingles, you minimize the waste associated with tearing off old materials. This is not only environmentally friendly but also reduces the overall cost of disposal.

4. Waterproofing Benefits Rolled roofing often features a mineral surface that provides excellent waterproofing capabilities. As such, it can act as an additional barrier against leaks and water damage when installed over shingles.

5. Aesthetic Options While the appearance of rolled roofing may not rival that of traditional shingles, modern designs have come a long way. Many rolled roofing products now feature a more refined look, allowing homeowners to choose options that better complement their house’s style.

Disadvantages to Consider

1. Durability Concerns One of the most significant downsides of rolled roofing is its longevity. While traditional shingles can last for many years, rolled roofing typically has a shorter lifespan. If your existing shingles are nearing the end of their life, the underlying roof might still suffer from failed components.

2. Weight Issues Adding rolled roofing over shingles increases the weight on your roof structure. While most residential roofing can handle this added weight, it’s essential to assess whether your roof can support the additional load safely.

3. Potential for Moisture Trapping If the shingles beneath are damp or failing, installing rolled roofing over them may trap moisture. This can lead to further deterioration of the existing shingles and mold growth.

4. Limited Warranty Coverage Many roofing manufacturers offer limited warranties for rolled roofing products. When installing over existing shingles, warranty coverage may be further restricted, leaving homeowners at a disadvantage should they face future issues.

5. Aesthetic Limitations While options for rolled roofing have improved, they may not provide the same visual appeal as traditional shingles. Homeowners looking for specific styles or colors may find themselves limited.

Conclusion

Installing rolled roofing over shingles can provide a quick, budget-friendly solution for homeowners in a bind. However, it is crucial to weigh the benefits against the potential downsides. Assessing your current roof condition, consulting with roofing professionals, and researching local building codes will be critical steps to ensure that your roofing solution is both effective and compliant. Ultimately, while rolled roofing can serve as a practical temporary fix, maintaining the quality and appearance of your home should guide your long-term roofing decisions.