Your current asphalt roof has to be near the end of its lifespan and still lying down pretty flat (no lifted or cracked shingles, blisters, or bumps). Codes vary, so call your local building department to know how to install metal roofing over shingles properly, code-wise. Mark Young, a veteran in the industry, founded Prime Roofing to help homeowners get their roof replaced in a simple, organized, and stress-free manner. The first being: local building codes. This gives your contractor a chance to inspect the deckings integrity to see if it can handle your new roof. Yes, Material cost per 100 sq. Since 1963, McElroy Metal has served the construction industry with quality products and excellent customer service. Yes While upfront costs are higher, customers who choose a clay or concrete tile roof will enjoy the aesthetics and quality for a lifetime. Lets begin. First and foremost, it lasts far longer. Your leaky asphalt roof is covered up without taking care of the problem when you put a metal roof over it. This durability will also protect your home as an added layer in addition to your shingles. Unfortunately, many people shy away from investing in a metal roof due to higher costs. Yes, you can install a metal roof over existing asphalt shingles. This is mostly due to the fact that metal roofs are more robust and can resist harsh weather. Some advantages include: With proper care, metal roofs will last much longer than shingle roofs. Why wouldnt a reputable roofing contractor recommend installing a metal roof over your old asphalt roof? These boards are what your roof and other components are installed on. Need to speak to an expert? What is the Best Underlayment for a Metal Roof? Quality, service and performance have been the cornerstone of McElroy Metals business philosophy and have contributed to the success of the company through the years. By the end of this article, you'll learn if it's a good idea to install a metal roof over an existing asphalt roof and some warnings about doing so. So for building owners looking to be environmentally friendly, its tough to find a more eco-friendly roofing option than metal panels. Scroll down to the bottom to submit a comment and join the conversation. Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it? To learn more about the crucial materials that are replaced when you get a new roof, read this article on the 9 materials included in your roof replacement. (Thats easily 2-3 times the life expectancy of a shingle roof!) By reflecting heat, it will save you money in the long run on cooling your home. Consequently, if using pressure-treated lumber for furring applications, a barrier of #30 felt or synthetic underlayment should be used between the wood framing and metal panels. Some metal roofs can withstand prolonged gusts of up to 140 miles per hour. Consequently, while this approach often represents the most economical installation, it also offers reduced energy savings. Shingles might be an inexpensive roofing material, but they require maintenance and frequent replacement. There are a couple of additional considerations with the direct attachment approach. Asphalt shingles, on the other hand, are usually disposed of in a dump. Because we want you to have all the important information about such a big decision, we're going to break it down for you. Maybe. Need a new roof? This framework has three big advantages. How to Add a Covered Entryway to Your Home, How to Install Aluminum Soffits That are Maintenance-Free, Comparing Flat Roof Vents and Turbine Vents, How to Prevent Ice Dams With Deicing Cables, Roof Flashing Techniques for Outside Corners, We are no longer supporting IE (Internet Explorer). A metal roof can be installed over a shingle roof, but youll need to make sure the plywood under your shingle roof is in good enough shape to handle a new metal roof over top. While this condition is purely aesthetic and doesnt affect panel performance, homeowners with a high emphasis on aesthetics may be better suited with a remove and replace approach or a system like our 138T, which we will address a bit later. Check out case studies on some of our recent recover projects: Whether youre a contractor already working with our team at McElroy Metal or are interested in using our products for your next project. Labor cost per 100 sq. I would recommend this company if you need a new roof. Can You Install a Metal Roof Over an Asphalt Roof? Installing metal over shingle roofing will not only provide that longer life span, but also improve the lifespan of the shingles, which will be shielded from the elements. If one puts too many layers of roofing materials on a home there is a good possibility that the trusses could fall. Roof Replacement | ft.: $150 to $450 Most often, furring strips will be used to secure the new roofing to the shingles. Resistance to hail damage: Excellent Contact Affordable Roofing at (813) 542 8462 for more information or a free estimate. If you want to install a metal roof over an asphalt roof, ask your contractor about the condition of your current roof and if a metal roof-over is a good option for you. Wind resistance: 80 mph After some research or talking to a contractor, you've probably heard the possibility of installing a metal roof over your existing asphalt roof. The second benefit is that it acts as a buffer between the metal roof and the shingle roof. When you roof over your asphalt roof with a metal roof, you have to rely on the underlayment from your old roof. Material cost per 100 sq. After all, tearing off a shingle roof to install a metal roof can incur double the costs. For this type of installation, a new underlayment will sometimes be installed before working on the metal roof. of roof tear-off. Metal roofing will last upwards of 50 years if properly maintained. "I recently had my roof replaced and Bill and team did an excellent job! Labor cost per 100 sq. While the weight may not be enough to create difficulties, it is something to think about, especially for roofs that receive a lot of snowfall. ft.: $30 to $85 With that in mind, most roofs wont be good candidates because of the wear and tear they go through during their lifespans. Read about the benefits and drawbacks of installing a metal roof over shingles. Asphalt shingle disposal necessitates the pricey expenditures of a dumpster rental and disposal costs. That's the short answer to the question: can you install metal roofing over a shingle roof? Do it yourself? Enter your search below and hit enter or click the search icon. And, because they are all made of metal, they are completely recyclable at the end of their lifespan. Additionally, the panels in this system are symmetrical. I had a leak in my roof due to a branch that fell and did some damage. Most codes now allow no more than two layers of roofing before requiring a complete tear-off. In a standing seam roof, long, single panels run vertically all the way from the eave to the ridge. Labor cost per 100 sq. A new metal roof installed correctly over an existing shingle roof can provide many benefits. The image above illustrates a general furring strip approach, although, as you might guess, there are numerous variations to this method. Condensation on your metal roof can be dealt with using a moisture barrier. ft.: 65 to 85 lbs. Metal roofs today come in a wide array of colors and finishes. This keeps costs low for you. No, Material cost per 100 sq. However, even if it happens to leak, you will still have the shingles as well. For most Americans, the attic is nothing more than an extra storage space for old, The gutter system is designed to direct rainwater through the downspout to a destination away, What are Gable Roofs? I understand everyone has a budget, but if youre investing in a metal roof, you should tear off your old asphalt roof. Labor cost per 100 sq. Your shingle roof does not reflect as much heat as metal will. Also the thinner the metal the more likely will buckle with temperature changes. Your email address will not be published. Without the extra barrier, the wood can wear out. In contrast, installing a metal roof over existing shingles means that any shingle tear-off expenses, including disposal fees, are avoided entirely. 8 Things to Consider When Selecting the Gauge for Metal Roof and Wall Panels, Pros and Cons of Metal Roof Insulation Options, Metal Roofing: Dead Valley Projects and Warranties, Join our blog subscribers and get the latest news, How to Install Metal Roofing Over Shingles, Specialty Panels - Shingles/Tiles/Stone Coated, Standing Seam - Insulated Metal Roof Panel, check out this white paper by the Metal Construction Association, Tired of Replacing Your Shingle Roof? These systems arent attached to a frame, but instead install directly on the old roof. Do it yourself? The team at Bill Ragan Roofing has been providing the residents of Nashville with high-quality asphalt and metal roofs since 1990. Cool outside air then travels under the shingles to the vented ridge (Detail 2), pulling out moisture and heat. However, if you plan on living there for a long time, metal roofing will be the best choice you can make. Maintaining the asphalt shingle layer makes the roof more insulated, lowering energy expenses. Before starting with a metal roof installation over existing asphalt shingles, it is essential to evaluate the upsides and downsides of this job. Skillful roofing contractors are more practiced at evaluating your Tampa roof no matter the condition. So, the investment might be worth it, but the range of choices makes shopping for a steel roofing system more complicated than you might think. They did an awesome job with my new roof. All Rights Reserved. Recover and Retrofit, The roof looks great. There are two primary methods implemented when installing metal roofing over shingles. Whereas an asphalt roof has a maximum lifespan of 20 years, a metal roof can last 40 to 70 years, depending on the material. We know what it takes to maximize the life of your roof. But some steel shingle manufacturers offer do-it-yourself systems that cost about the same as an installed asphalt roof for those who want to learn how to instal a metal roof on their own. It saves money on the expense of removing an existing roof. Over time, a metal roof without a buffer can cause the shingle granules to wear away against the back of the metal roofing panels. In fact, it's not uncommon to be forced to remove perfectly good panels to access those that need to be repaired or replaced when working with asymmetrical style roof panels. There are ways to check without removing the roof, but they are not always as reliable as looking at it directly. Part of the high cost of metal roofs stems from installation best practices. Putting a metal roof on top of shingles adds weight, lowering the live load a roof can withstand. Now you know you can install a metal roof over an asphalt roof. But perhaps most importantly, it provides ASV or an Above Sheathing Ventilation airspace, which helps owners maximize energy savings. ft.: $400 to $1,200 904-530-1446, 3500 Beachwood Court, Suite 207, Jacksonville, FL 32224. This allows for panels to expand and contract freely when the metal heats up. Considering replacing your roof? Resistance to hail damage: Good The crew worked hard and cleaned the place after installation. Luckily, weve developed a quiz to help you find the right roof for you. As the most-used roofing type across North America, asphalt strikes a balance between price and durability, with a life expectancy of up to 20. Wind resistance: 60 to 80 mph Be sure that your contractor carefully inspects and addresses any existing damage to your roof or shingles before adding a new metal roof. Additionally, metal roofing will save you money on cooling your home. Located in Welaka, Florida, our company has state-of-the-art manufacturing equipment resulting in fine quality metal roofs for commercial, residential and agricultural use. However, with the added cost of the furring material and installation, the final price can be similar to tear-off. First, check your local building rules to see if putting a metal roof over shingles is legal. This allows the new underlayment to act as a line of defense in the event that water somehow gets under the metal roof. So, if your roof has two layers, it may require a complete tear-off, even though steel is lighter than asphalt. As mentioned above, there are tradeoffs involved in any decision. This is highly dependent on your area. As a result, if your home already has a double coating of asphalt shingles, you will be unable to add another layer on top of it. As long as you meet all the requirements of your local building department, the shingles do not necessarily have to be removed before installing metal roofing. Conversely, many other types of standing seam panels are asymmetrical. Here is an actual metal roofing installation projectby Prime Roofing. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Talk with your contractor if you are concerned about their methods. To learn more about the asphalt shingle roofs, read this article on the 3 types of asphalt shingles. To learn more about the two metal roof systems, read this article on metal roofs: standing seam vs. screw-down panel. Save my name, email, and website in this browser for the next time I comment. To vent the roof, holes are cut in the old roof (Detail 1) above the soffit, which pulls air through the soffit vents underneath. After reading this, do you still want to roof over your old asphalt roof with a metal roof? This can make correctly installing a metal roof on top of it problematic. Better steel shingle systems, like the one shown, install over a framework of 2x2s. In contrast, asymmetrical systems require installation in a predetermined manner (commonly left to right). Roofing materials arent meant to last forever. Once youve decided to stop the constant churn of shingle replacement and use metal panels instead, its time to determine the specific installation method you plan to use. I would not recommend putting a screw-down panel over a heated space such as your home or office due to its lack of expansion capability. Removing old shingles necessitates the removal of hundreds, if not thousands, of pounds of old material. Do it yourself? This regulation exists for a purpose. It will be more likely to leak as well as build up moisture on the metal roof. Be sure to check your local building codes to find out, or work with a reputable roofing pro. Before we get to if you can install a metal roof over an asphalt roof, you need to know a little about both. Choosing between roof types is a tedious task for many homeowners., Prime Roofing Lets say you already have a shingle roof, but you desire a new metal roof for the many benefits they can offer. With water running across and down your shingles, its nearly impossible to find the origin of the leak in your roof. This layer of protection is critical to prevent the shingles from wearing through the metal panels as they expand and contract over the roofs life. Certain building codes will only allow you to install metal roofing over one layer of shingles. Once the roofing is on, edging will be installed to bring it all together. Received 4 different quotes and they were comparable to competitors. Metal Roof. Youll be able to save up to 25% in labor costs by not tearing off your old asphalt roof, installing new underlayment, or the fees to dump the old roofing materials. They did an awesome job with my new roof. The first is running new underlayment over an existing shingle roof, thus covering the old roof. Although, it is undoubtedly more environmentally friendly since the shingles remain in place. This also applies to the durability of your roof. As a preferred service provider, these values will continue to be at the forefront of McElroy Metals model along with a strong focus on the customer. Asphalt Shingle Roof | Is it Possible to Install Metal Roofing Over a Shingle Roof? To get the best quality roof possible, you should always start from clean decking and replace all the crucial roofing materials. Remember, while it can be done, I wouldnt recommend it. It is not recommended to install metal roofing over shingles without furring strips. First, its challenging to achieve Above Sheathing Ventilation (ASV) with this installation method. However, that changes as you consider longer periods of time. Keep in mind that most municipalities will not permit a property to have more than two layers of shingles. Commercial. Well help you to choose one that will fit your homes style and your budget. Yes Whereas an asphalt roof has a maximum lifespan of 20 years, a, Installing Metal Roof Over Shingles Pros and Cons. The screws are screwed through the panel, which leaves no room for expansion and contraction. Customer service, scheduling, and communication were a complete disaster. One of the major advantages of metal roofing is that it is very lightweight. Weight per 100 sq. Yes. No, Material cost per 100 sq. This can take the form of new underlayment in many cases. Our attention to detail and high-quality workmanship you get a new roof that lasts for decades. 9511 N Trask St Suite A Tampa, Florida 33624, Difficulty checking the framework and deck, Having to replace your new metal roof due to undetected deck damage, May limit or void manufacturers' warranty. Our quote was evaluated, completed and sent to us very quickly. Luxury style shingles are just as heavily marketed as dimensional but are almost double the price. Metal roofing typically requires a more significant up-front cost than new shingles, but metal roofing can last 50+ years with minimal maintenance. Over an asphalt roof? Our experienced roofers will answer all your questions and ensure your roof is done right to prevent or mitigate the issues mentioned above. One option is to leave the asphalt shingles alone. Installing metal roofing over existing shingles is an excellent way for contractors to help building owners maximize the longevity of their new roof while saving them money (not to mention the headaches!) Roof Installation | However, I wouldnt recommend it. They made a great job, we are 100% satisfied. But is this a good idea? There are several benefits to installing a metal roof over shingles. First, because the frame is screwed directly to the rafters and the interlocked shingles are screwed to the frame, the roof can withstand winds of up to 120 mph without damage. Before you have a quality roofing company install a metal roof over your shingle roof check with your local building department to ensure it is one of their approved installation methods. Helpful information for contractors, distributors, architects, and building professionals using metal products. Shingles are available for those who want affordable, genuine slate roofing. Its your roof systems last line of defense for keeping your decking dry. Why Install Metal Roofing Over Existing Shingles? On time, efficient and quality workmanship. 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