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Can A Metal Roof Be Installed Over Shingles

Metal Roofing Can Be More Cost

Installing Man-made Slate Roofing Shingles

Although most metal roofing products carry warranties comparable to the very best asphalt shingles , in practice, metal roofs have been known to last 50 years or more. According to State Farm Insurance statistics, metal roofs routinely have a longevity of 40 to 70 years. It is therefore very rare for a homeowner to install more than one metal roof over the time he or she lives in the home. By contrast, a homeowner will likely replace an asphalt shingle roof two or even three or four times over a 50-year period. Overall, while the cost of a metal roof is more expensive than asphalt roofing , it can save money over a long period.

Benefits Of Sturdy Metal Roofs

When you install your new metal roof over an existing shingle roof, you immediately save money that normally would be spent to have the old roof torn off. But this is just one of many benefits of a metal roof. Here are four more:

1. Long life: A properly installed metal roof should last for 40 or 50 years or more before a replacement is needed.

2. Virtually impervious to damage: Metal roofs hold up in the most intense weather events from pounding hail and ice storms to gale-force winds and searing summer heat.

3. Very low maintenance: Because of their strength, metal roofs wont require regular, expensive repair jobs. Year after year, decade after decade, they retain their soundness.

4. Lowered cooling bills: As noted above, special coatings on metal roofs allow them to reflect and block heat rather than absorb it. This results in cooler interior temperatures in the summer and less need to use your AC system.

If youd like to know more about metal roof installation or metal roofing in general, contact the experts, Advanced Aluminum of Lakeland, FL. We manufacture top-grade metal roofing products used by leading contractors across the Lakeland region. Reach us with questions at 648-5787.

Preparing For A Roof Overlay

Before you install a metal roof over shingles, you need to prepare the roofing system for the roof overlay. First, you need to address any potential long-term issues, such as leaks or roof damage. If you dont take care of these problems early on, fixing them down the road will be more difficult since there are two layers of roofing.

Your roofing contractor should conduct a complete roof inspection. They should identify any issues that compromise the structural integrity of the roof. They may also have to renovate the structure or add framework to support the metal roof. Next, your contractor needs to look for roof damage or problems in previous workmanship. The current roof needs to be in like-new condition before you add the new layer of metal roofing.

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What Is The Best Way To Install A Metal Roof Over Shingles

If you wish to install metal roofing over shingles, its recommended to do it one of two ways. The first is to apply an approved underlayment over the old shingles. This is the fastest way to install but it doesnt provide the flattest surface for metal roofing installation. The second way is to install 1×4 purlins over the shingles. This is more expensive but will also be higher quality.

Ready To Switch To A Metal Roofing System

Can You Install A Metal Roof Over Shingles

If youre thinking about upgrading your roof, you can count on the experience and expertise of Roof Crafters your Baton Rouge, LA metal roofing contractor. With a Class-A fire rating and exceptional impact resistance, our metal roofing systems are designed to withstand even the harshest weather conditions and boost the energy-efficiency in your home. Metal is far more durable than asphalt, slate, and wood and resistant to algae, mold, and rust. For all your Baton Rouge, Hammond, and the Northshore metal roofing system needs or to get a FREE estimate, get in touch with Roof Crafters today at .

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Common Mistakes To Avoid When Installing Metal Roofing

A metal roof is a great solution, and as we highlighted above, you can install a metal roof over your existing shingles. A steel roof is a lifetime investment, lasting 50 years or more if its a good one.

Can i install a new roof over my old one roofing. 1) remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely.

Can you install a metal roof over shingles in 2020. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing.

Can you put steel roofing over shingles in 2020. A common installation tactic for adding metal roof over shingles is to add small slats of wood and secure those slats of.

Can you install a metal roof over shingles absolutely. A layer of underlayment installed on top of the existing shingles will help keep the granules of the old shingles from rubbing.

Charming photo newroof metal roof over shingles diy. A metal roof is a great solution, and as we highlighted above, you can install a metal roof over your existing shingles.

Copper ridge vent metal roof vents metal roof metal. A steel roof is a lifetime investment, lasting 50 years or more if its a good one.

. Although it is fine that you know how to install metal roofing over asphalt shingles, metal roofing always requires more.

Galvalume substrate metal roof shingles by alpha rain. Both options have their benefits and drawbacks.

Benefits Of Installing A Metal Roof Over Shingles

Before we get into the steps for installing a metal roof over shingles, lets dive more into the pros and cons. Installing a roof is a big decision, and you want to make sure this option is right for your needs. After all, once your metal roof is installed, it will be there for decades to come. Here are some of the benefits of installing a metal roof over shingles.

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After Youve Considered These Questions If You Feel Confident The Roof Is A Good Fit For A Roof

1. Before installing the new roof, youll want to cut the shingles flush to the fascia at the eave and rake . This ensures they wont be seen or interfere with panel and trim flashing for the new roof. The old drip edge may need cut off as well, depending on the type of metal roofing and metal roof flashing that will later be installed.

2. Install underlayment between the shingles and the new metal roof. This can be synthetic underlayment , 30lb felt, or a double bubble radiant barrier and keeps the rough surface of the shingles off the backside of the metal roofing.

3. On through fastened panels or some types of standing seam you can replace or supplement the underlayment with 1×4 or 2×4 lathing strips ran every 2 or so up the roof. These provide an air gap for additional insurance, provide a framework to walk on , and if your rafters are bowed can be shimmed up to straighten up the roof and eliminate sagging. While eave and rake trims are always important, they are especially crucial when 1×4 or 2×4 lathing is installed, to help hide the edges of lathing around perimeters.

4. Even if you leave your shingles, you will need to remove ridge venting material and caps. In addition, metal roof pipe flashing will be needed for round pipes and penetrations. Metal roof flashing will still be needed around chimneys, skylights, and where roofs hit a wall .

Exceptions To Putting Roofs Over Shingles

Installing the Metal Roof

Of course, you cant always put other types of roofing over existing shingles, whether theyre metal or not. If the shingles have been covered over multiple times, the layers may have become too thick and will need to be removed before you can put another roof on it safely. You may also need to repair the roof if it has been damaged.

Putting a roof over shingles can only be an issue if the roof material is heavy enough to cause structural damage. Because metal is quite light, this is only likely to happen if there are many layers of asphalt shingles.

Keep in mind that were talking about putting metal over asphalt shingles. Wood shingles may be too thick to have metal roofs placed over them, as the wood shingles could deform the sheets. If the asphalt shingles arent even, this could also create other issues. If youre unsure, the best thing to do is contact a professional. Theyll take a look at your existing roof and the material you want to put over it and determine whether its the best option.

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Metal Roof Over Shingles Problems: What You Need To Know

There are some issues to be aware of when installing metal roofing over shingles. If for any reason the metal roofing is damaged and then the shingles underneath are also damaged, you are looking at doubling up on repair costs. You also will have another layer to rip off when it comes to looking for leaks or checking the wood beneath the roof.

Is It Cheaper To Get A Metal Roof Or Shingles

Youre probably wondering about the cost to install a metal roof over shingles. While its cheaper to purchase shingles , metal roofing may provide you with better value in the long-term. Not only do they look beautiful and unique, but theyre also designed to last decades longer because of their durability. In fact, a metal roof thats built properly will be able to handle anything Mother Nature throws at it. You will most likely never have to purchase another roof again in your lifetime.

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Pros And Cons Of Metal Roofs For Your Home

Whether you’re buying a home with one or thinking of installing, here’s what to know.

Whether you’re putting a roof on a new home, or your existing roof requires a total makeover, there are many materials available. But no matter what roof style you have, metal roofs can be an attractive option because of their longevity, minimal maintenance and energy efficiency. Material choices include steel , aluminum, copper, zinc and tin. Product types are vertical seam, pre-formed panels and granular coated panels. Style choices allow you to have the look of shingles, slate, tile, shakes or vertical panels. Make sure your metal roofing product is tested, labeled and listed with a testing organization such as UL, FM Approvals or Intertek to meet rigorous wind, fire and impact resistance rating requirements. Please also remember that installation can vary from geographic location, manufacturer guidelines and as a result of local building code requirements.

Putting Metal Roof On Top Of Shingles

24 How To Install Metal Roofing Over Shingles Ideas

by Mountaintop Metal Roofing | Jun 30, 2020 | Residential

Metal roofing can be seen almost anywhere. Covering bus stops in the city, covering barns in the countryside, or covering undercover play areas. Metal roofs are often used in these cases because of their longevity, easy maintenance, and simple aesthetic.

During the last two decades, however, metal roofing has been growing in popularity for residential homes. The industrial-looking corrugated roof or simple standing seam metal roofing has been replaced by metal roofing systems made to look like slate, cedar shingles, and more. While its gaining in popularity, finding an experienced professional to install this type of roof can be a challenge.

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Install The Roof Shingles

Finally, the preparation is over, you can now install the shingles. Start on the lower edge of the roof, install the starter shingles by nailing them down using roofing nails. Install another set of starter shingles at the sides of the roof, ensure the two sets overlap.

Your first row of shingles should overhang the drip edge, nail four to six nails below the tar line on every shingle. Lay the shingles on the whole surface of your roof when done, install the ridge cap shingles over the ridge.

Ideally, start on the left side of the hill by nailing it on the right side, lay the next shingle cap over the first, ensure it covers the nail on the fist shingle, nail it down and continue this way to the last shingle cap.

Apply roofing tar on the nail holding the last shingle to prevent leakage.

Installing Metal Roofing Over Asphalt Shingles

When an asphalt shingle roof wears out, one of the most long-lasting solutions is to retrofit the roof with metal panels, and not remove the asphalt shingles. While its a change of appearance, the metal roofing panels will provide a long service life.

Installing Metal Roofing Panels Over Shingles

There are a number of considerations when installing metal panels over an existing asphalt shingle roof. First, the building codes allow metal over shingles if there is only one layer of asphalt shingles. A third roof is not allowed, so there must only be one shingle roof in place.

Choosing the Correct Metal Roofing System

Fastener choice is important for wind resistance. As is the pull-out resistance of the deck. The panel thickness , panel width, height of the standing seam, spacing between clips, and clip strength all help determine the overall wind resistance of a metal panel recover installation. Wind design loads are specific to geographic location and height of the building work with the metal panel manufacturer to determine the design specifications. Importantly, use fasteners that are long enough to penetrate through the asphalt shingles and the deck by at least ½ to ensure proper strength.

Benefits of Installing Metal Panels

Installing metal panels over existing asphalt shingles is a smart choice. Design it right, and the new metal roof could last the life of the house.

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Installing Metal Roofing Over Shingles Is The Best Option

Installing metal roofing over shingles is by far the best option when it comes to metal roofing. The extra layer of protection and support that is provided by the shingles creates a win-win situation. The only time this setup would not be recommended is in the case that the local codes or your HOA dont allow the installation of a metal roof over pre-existing shingle roofing.

Can You Put A Metal Roof Over Shingles

Standing-Seam Metal-Shingled Roof Installation

Yes, its possible to put metal roofing over shingles. Before you get started on your project, though, you will need to check with your local building department to see if theyll allow you to. Some areas will only allow re-roofing over one layer of shingles while others will allow over two layers. There are also some disadvantages to installing metal roofing over shingles that youll want to know about before starting. Contact your local roofing company to learn more and see what they can do for you.

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How Do You Install Metal Roofs Over Shingles

When installing roofs over shingles, an underlayment is placed over the shingles. This will prevent any leakage onto the existing shingles, though ideally, the roof should already be watertight and in relatively good condition. Once the underlayment is in place over the shingles, the metal roof can be installed. Professionals will ensure that the roof is installed correctly and impervious to water.

Why Metal Roofs Are Better

  • Metal roofs are drastically safer because they do not pose a fire hazard from sparking
  • Metal roofs are one of the most environmentally friendly investments you can make

When you think about the inconveniences of an asphalt roof, you probably think about the cost of continuous repairs and eventual replacement, but you should also take its safety hazard into consideration, too. Metal roofs wont spark the way that asphalt shingles do, which means they drastically reduce the risk of fire that can result from a lightning strike or wildfire.

Metal roofs are also better because they are far more environmentally friendly. A metal roof is made of up to 40% recycled material, and the roof itself is 100% recyclable. Metal roofs also impose a substantially smaller carbon footprint. These features, coupled with their aforementioned energy efficiency, make a metal roof the most eco-friendly roofing option on the market.

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Will The Warranty On The Metal Roof Be Void If Installed Over Shingles

The specifications of your metal roof warranty will vary depending on the manufacturer. You, or your installer, must check the metal roof warranty to make sure that you arent breaching the warranty terms by installing it over asphalt shingles. Doing so will leave you without any coverage on your brand new roof.

The Weight Of The Roofing System

Can Metal Roofing Be Installed Over Shingles? â Home Of ...

Most buildings are designed to support the heaviest roofing systems. However, the combined weight of asphalt shingles and metal roofing may require additional support in the roofing structure. This is especially true if the structure is older and not designed for modern roofing materials. Before undertaking a residential or commercial metal roof installation, make sure the building can support both roofs long-term.

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Shingle Installation Steps Over Metal Roofing

You should take these precautions if you are looking to save costs when it comes to pre-installing your metal roofing over shingles.

  • Remove obstructions such as air vents or flashing pipes
  • Fix bent, torn or cracked shingles
  • Sweep the roof and clear any debris that could create a nuisance.
  • Note any leaks or gaps in the roof that could result in further damage if not handled prior to installation.


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