Because roof replacement can be expensive, some people opt just to put the metal roof over the old shingles. Is this move possible and helpful in the long run? Keep reading to find out.
When Can You Put a Metal Roof over Shingles?
While adding a metal roof over your existing roof is possible, the roofing company you hire should assess the roof to ensure the metal roof will be suitable.
If you install the metal roof on top of asphalt shingles, it should be installed on a fresh layer of shingles. If the shingles are more than ten years old, they will probably need to be replaced anyway, so it’s probably worth your while to do it right.
If the metal roof is installed over existing shingles, the asphalt shingles should be in good shape. This means that no shingles should be blown off or cracked. The metal roof will have a poor seal if installed on asphalt shingles that are loose or flaking.
When Should You Not Put a Metal Roof on Shingles?
While it’s possible to add a metal roof to shingles, it’s not always a good idea. If you have asphalt shingles that are old and damaged, the metal roof will be ill-fitted. The roof will not stick well to the old asphalt shingles, which could translate to future leaks.
Additionally, if you have asphalt shingles that have been damaged by hail or other sources, the metal roof will not have a proper seal. The shingles are already compromised, so putting a metal roof on top of them will just mean more problems down the road.
Take the time to assess your roof. If you have asphalt shingles less than ten years old, a metal roof may work well over the existing shingles. If you have damaged shingles or other concerns, consider an alternative roofing material.
3 Tips in Putting Metal Roofs to Shingles
When you plan to have a metal roof installed over asphalt shingles, here are some things to keep in mind:
1. Make Sure You Provide a Barrier between Them
If you want to add a metal roof to your existing asphalt shingles, you need to ensure a barrier between the shingles and the metal roof.
Special screws and sealant will be necessary to ensure that the metal roof is protected and that it doesn’t come into contact with the shingles. This will help to protect the metal roof and make sure water doesn’t collect and cause your shingles to sag.
2. Know the Pros and Cons of Using Metal Roofing
There are advantages and disadvantages to metal roofs. It’s essential to know these before you make your decision.
On the plus side, metal roofs are more durable and energy-efficient than shingles. They also provide a great deal more resistance to weathering and can last anywhere from 50 to 100 years, depending on the type of metal used.
On the negative side, metal roofs are more expensive than asphalt shingles. Metal roofing also adds more weight to your roof, meaning you’ll need to make structural changes to your roof before installing it.
3. Consult Roofing Professionals
Contact a roofing professional if you’re thinking about putting a metal roof onto your existing shingles. They’ll be able to give you advice on the best way to achieve the result you want.
The decision to put a metal roof on top of existing shingles is important. Because the metal roof is more expensive and requires alteration of your home’s structure, you want to be sure it’s the right decision.
Make sure you do metal roofing right by hiring us at 5 Star Roofer. As the best roofing contractors in Birmingham, AL, you can rest assured that you get high-quality roofs that will last you for years to come. Contact us today for a free quote.