The simple answer is yes, you can install metal roofing over shingles. This can be a cost-effective way to upgrade your roof without having to remove the existing shingles. However, this is a major decision that may affect you in the years to come and there are several factors you’ll want to consider before making a choice.
Factors to Consider Before Installing Metal Roof Over Shingles
Installing a metal roof over shingles requires the right circumstances to ensure the project goes smoothly and problems don’t happen further down the line. Here are a couple of things that’ll be helpful for you to think about before embarking on such a significant project.
1. Check With Your Local Building/Zoning Department Before Installation
Before installing metal roofing over shingles, it’s a good idea to familiarize yourself with the local building codes and regulations. Being proactive in this way ensures compliance and avoids potential legal and financial repercussions. Understanding these guidelines can provide insights into specific requirements, such as minimum clearances, load-bearing capacities, and insulation standards.
By being aware of these factors, you can make informed decisions about the suitability of metal roofing for your project and avoid costly mistakes or delays in the future.
2. Consider the Structural Integrity of Your Home
One of the most important steps when considering a metal roof over asphalt shingles is assessing the structural integrity of your home. Even though most homes are designed to withstand heavy roofing systems, the added weight of the metal roofing over shingles can put strain on the existing structure.
It’s best to get a professional roof inspection to assess the structural integrity of your home before proceeding with the installation. This will help determine if your roof can handle the additional load and prevent potential issues down the line.
3. Inspect the Condition of Your Existing Asphalt Shingles
Before embarking on a metal roofing installation, the condition of your existing asphalt shingles need to be considered. If they are nearing the end of their lifespan or have significant damage, it might be more cost-effective to remove them before installing a metal roof. Otherwise, you would be covering up existing problems that will be more expensive to fix later on. Once again, a professional roof inspection can help you examine the current condition of your shingles.
4. Weigh the Cost versus the Benefit of Installing Metal
While installing metal roofing over shingles can offer several advantages, it’s important to weigh these benefits against the potential costs and risks. One significant benefit of metal roofing is its durability. They are designed to withstand harsh weather conditions and are also resistant to pests, mold, and mildew, making them a low-maintenance option.
Lifespan is another compelling advantage of metal roofing, with an estimated 50 years, far surpassing the durability of traditional shingle roofs. This translates to significant cost savings in the long run, as you likely won’t need to replace your metal roof throughout your property ownership.
Most people wanting to install metal roofing over shingles are looking to avoid the hassle and expense of removing their entire roof. A metal roof over shingles can save on removal costs, but it may not be as cost-effective as starting with a clean slate and the installation process can be more complex and time-consuming.
Should I Install a Metal Roof Over Shingles?
The decision to install metal roofing over shingles is a big one that you’ll have to live with for many years.
While there is no right or wrong answer, it’s important to consider all the necessary factors pertaining to your unique circumstance. Factors to consider include:
- Budget: What are the initial costs of metal roofing, including materials, labour, and permits, and the potential long-term savings from its durability and energy efficiency?
- Climate: Will the metal roofing withstand your region’s weather conditions, such as extreme temperatures, heavy snowfall, or strong winds?
- Neighbourhood: Does metal roofing fit your neighborhood’s aesthetic preferences and any local regulations or restrictions?
- Warranties: Compare the warranties offered by different metal roofing manufacturers and installers to ensure you’re protected against defects or damage.
Both metal roofing and asphalt shingles have their pros and cons, so you’ll want to have a strong understanding of their similarities and differences on those key decision-making factors.
Conclusion
Installing metal roofing over shingles is definitely possible, but it’s essential to carefully consider all the factors involved. Before taking any action, we recommend getting a professional’s opinion to determine the feasibility of such a project.
By assessing your local regulations, structural integrity, shingle condition, and cost-benefit analysis, you can determine if this is the right choice for you. Ultimately, the best decision will depend on your specific needs and priorities.
