Can metal roofing be installed over shingles?

Metal roofing is a popular option for many homeowners because of its durability, energy efficiency, and attractive appearance. But can metal roofing be installed over existing shingles? This article hopes to answer this question and provide some helpful information about metal roofs in general.

Benefits of Installing Metal Roofs Over Shingles
1. Longer Life – Metal roofs typically last longer than shingles and can last up to 70 years when installed correctly.
2. Energy Efficiency – Metal roofs reflect the sun's heat away from your home, making it more relaxed in the summer months and more energy-efficient overall.
3. Durability – Metal roofs are highly durable and resistant to wind, hail, snow, fire, and other weather conditions that may otherwise damage shingles.
4. Cost Savings – Installing a metal roof over existing shingles can save you money on installation costs because it reduces the time required for labor and materials.
5. Low Maintenance -Metal roofs require little maintenance compared to other roof types; they do not need to be replaced every few years as shingles do.

Can Metal Roofs be Installed Over Shingles?
Metal roofing can be installed over existing shingles as long as the structure of the roof underneath is still sound. However, it's essential to have a professional inspect your roof before deciding whether or not this is a viable option for your home. You may have better choices than metal roofs if there are any signs of damage, such as rotted wood or missing shingles. 

If your home's roof is in good condition and has few slopes or valleys, then metal roofs can be installed over existing shingles with relative ease. However, it's important to note that proper ventilation must be maintained for the metal roof to function optimally. If you install a metal roof over asphalt shingles, ensure at least 6 inches of airspace between the two layers. This will ensure that moisture doesn't become trapped between the two materials, which could cause damage later on down the line.

Advantages of Hiring a Professional for Metal Roof Installation
1. Safety – Metal roof installation can be dangerous and requires a professional to properly install the material without risking harm.
2. Efficiency – A professional will have the right tools and experience to complete the job quickly and efficiently, ensuring you won't delay getting your metal roof up and running.
3. Quality – Professionals know precisely what must be done for your metal roof to last many years. Hiring someone with experience will help ensure your metal roof is installed correctly and meets all local codes and regulations.
4. Warranty – Most professionals offer a warranty on their work, meaning that if something goes wrong with the installation, they will cover repairs or replacements at no extra cost.
5. Proper Tools – Professionals can access the tools and materials required for metal roof installation, saving you time and money in the long run.

Tools and Materials Needed for Installing a Metal Roof
1. Metal roofing panels – These come in many different sizes and styles, so you'll need to decide what type of panel will best suit your needs.
2. Fasteners (screws, nails, etc.) – You'll need the correct type of fastener for the material used to attach the metal roofing panels to the underlying structure.
3. Underlayment – This material layer goes between the metal roofing and the underlying structure to provide extra protection from moisture and debris.

Tips for Selecting the Right Metal Roofer
1. Research – Finding a trustworthy metal roofer with experience in your project type is essential.
2. Licensing and Insurance – Make sure that the metal roofer is appropriately licensed and insured so that you don't bear any liability should something go wrong while they are working on your home.
3. Get References – Ask the roofer for references from previous customers to understand their artistry and customer service.

Common Mistakes to Avoid During Metal Roof Installation
1. Insufficient Ventilation – Ensure your metal roofer follows all ventilation requirements to prevent moisture from accumulating and causing damage.
2. Improper Fastening – To withstand strong winds and extreme weather conditions, your metal roofing must be fastened correctly. Ensure your metal roofer can adequately secure the material to the underlying structure.
3. Ignoring Underlayment – Don't overlook the importance of underlayment, as this is what provides extra protection against water and debris entering your home.

What to Expect During/After Metal Roof Installation Process?
- Measurement of the existing roof
- Removal of old shingles or other materials
- Installation of underlayment and flashing
- Installation of metal panels over the existing structure
- Clean up any debris generated during installation
- Final inspection to ensure everything is installed correctly

Considering Maintenance Needs When Choosing a New Roof Material
1. Check weather resistance – Make sure the material you choose can withstand extreme weather conditions and is durable enough to last many years.
2. Consider ease of repair – Some materials, like metal roofing, are easier to fix than others if something goes wrong.
3. Think about reflectivity – Some materials are more reflective than others, which can help keep your home cooler during the hot summer months.

​Understanding Warranties with Metal Roofs
- Warranties can be a great way to protect your investment and ensure that the manufacturer will cover any repairs or maintenance needed.
- Most metal roofing warranties cover materials, labor, and installation for up to 20 years or longer.
- Be sure to read the fine print so you know exactly what is covered in the warranty and if there are any exclusions.

Installing a metal roof over existing shingles can be a great way to upgrade your home. It's essential to hire a professional for the job to ensure it is installed correctly and lasts many years. Be sure to do your research before choosing a metal roofer, and always read the warranty carefully so you know what is covered in case of any repairs or maintenance needs. With proper installation and ongoing maintenance, you'll enjoy many years of worry-free enjoyment from your new metal roof.