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Do I need underlayment for metal roof over shingles?

In almost every case, the answer is yes, you can lay down a new metal roof over an existing shingle roof. This is one of the many reasons metal roofs keep growing in popularity – their installation doesn't require completely tearing off the existing roof, which is a time-consuming and expensive job.

In simplest terms: Yes, you can install a metal roof over shingles. However, you’ll want to check with your local building department before you make any decisions. Building officials in some areas will only allow a re-roof over one layer of shingles, while officials in other places may allow you to place the roof over two layers of shingles.

Can you put metal roofing on top of asphalt shingles?

The short answer is yes, you're able to roof over your old asphalt roof with a new metal roof under the right circumstances. ... You'll 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.24 jul. 2020

Should shingles be removed before metal roof?

Considerations for Both Options. Your local roofing contractor may recommend tearing off your old shingles before installing a metal roof if any of the following conditions apply: Rough or uneven asphalt shingle roof will affect the metal roof's appearance. The deck sheathing show signs of rot and would require repairs ...4 nov. 2019

Do metal roofs leak more than shingles?

Do Metal Roofs Leak More Than Shingles? If installed incorrectly, metal roofs have the potential to leak more than shingles. However, if you find an experienced contractor who can install it correctly, metal roofs shed snow and ice to prevent moisture buildup.16 nov. 2020

Does a metal roof add value to your house?

While there are cheaper options on the market, metal roofing offers performance, protection, and profitability. Today, a metal roof can increase a home's resale value up to 6% when compared to asphalt. Read on to learn why upgrading to metal roofing could make a difference in how much or how quickly your home sells.15 mrt. 2021

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Is metal roof more noisy than shingles?

  • Metal roofs are not noisy . In reality, they can be quieter than your typical asphalt shingles. In addition to serving as a great line of defense against noise pollution, metal roofs are also energy efficient and eco-friendly.

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Should you remove shingles before putting on a metal roof?

Metal roofs can be installed over your existing roof without tearing off shingles, provided local building codes allow it. While shingle removal is the preferred route, tear-off is messy and raises the cost of the job. ... If trapped between the metal roofing and old roofing, moisture can build up and cause mold and rot.28 dec. 2021

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Can you put a metal roof over 3 layers of shingles?

Metal roofing is a more efficient and longer-lasting roofing alternative to asphalt shingles. ... You can generally install a metal roof on top of shingles as long as there are fewer than four layers of shingles on the roof, but the exact standards vary by area.

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Can you put shingles over shingles?

You might be able to lay new shingles over existing shingles and avoid the cost of tear-off. If conditions are right, new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. ... But you must take care to install shingles correctly so they lie flat.30 jun. 2020

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How much does a 1500 square foot metal roof cost?

For an average-sized roof measuring 1,500 square feet, this adds up to a total average material cost of between $4,875 and $8,625.30 sep. 2021

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How do you vent a metal roof over shingles?

To vent the roof, holes are cut in the old roof (Detail 1) above the soffit, which pulls air through the soffit vents underneath. Cool outside air then travels under the shingles to the vented ridge (Detail 2), pulling out moisture and heat.

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How much does it cost to put a metal roof over shingles?

The total job can average between $1,000 to $1500. The price can increase based on the complexity of the workload. Having the removal and disposal of an old roof factored into the overall costs is helpful when gathering estimates.

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Can you put metal roof over shingles without furring strips?

You should not attach metal to asphalt shingles without furring out the roof first. Install radiant barrier, install 1"X4" battens, install metal.Jul 19, 2014

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Do I need furring strips under metal roof?

When installing a metal roof over an existing roof, insulate the spaces between the wood strips with rigid insulation to prevent condensation before installing the roofing. You also need to add furring strips. ... Twenty-four inches is a common spacing of furring strips for a metal roof.

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Can you cover shingles with a metal roof?

Metal roofing can be installed over top of shingles. One of the major advantages of metal roofing is that it is very lightweight. This makes it a perfect material to be installed right on top of an existing shingle roof.Apr 13, 2020

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What's cheaper metal roof or shingles?

Metal shingles are often cheaper, around $7.00 to $10.00 per square foot, than standing seam metal roofs, around $9.00 to $12.00 per square foot. But you also have to add labor costs on top of that. In other words, the average price for an average metal roof hovers around $17,000.Apr 18, 2019

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Can a metal roof be installed over 2 layers of shingles?

In simplest terms: Yes, you can install a metal roof over shingles. ... Building officials in some areas will only allow a re-roof over one layer of shingles, while officials in other places may allow you to place the roof over two layers of shingles.Oct 19, 2019

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What is the advantage of a metal roof over shingles?

In fact, metal roofs are so beneficial because they're very light. They're fast to install, and they come in large sheets rather than individual tiles. When you install a metal roof over shingles, you actually get additional protection from the shingle roof as well as additional insulation.Nov 24, 2020

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How much does it cost to put a metal roof on a 2000 sq ft house?

According to Fixr, a 2,000-square foot metal roof costs between $8,000 and $60,000, including the cost of materials and installation labor. Although this price range is very wide, your project probably won't come in towards the upper end of that scale unless you select a pricey material like copper.Sep 30, 2021

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Can I put metal roof over 3 layers of shingles?

Metal roofing is a more efficient and longer-lasting roofing alternative to asphalt shingles. ... You can generally install a metal roof on top of shingles as long as there are fewer than four layers of shingles on the roof, but the exact standards vary by area.

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What should go under a metal roof?

The traditional and most common material used for roof underlayment on a steep-slope metal roof is non-perforated, asphalt-impregnated felt underlayment. There are several types of felt underlayment including both organic reinforced and inorganic reinforced.

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Should you remove old shingles before installing a metal roof?

Metal roofs can be installed over your existing roof without tearing off shingles, provided local building codes allow it. While shingle removal is the preferred route, tear-off is messy and raises the cost of the job. ... If trapped between the metal roofing and old roofing, moisture can build up and cause mold and rot.Jun 29, 2021

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Does a metal roof need vented?

Energy Savings

Proper ventilation is needed to ensure the energy efficiency a metal roof provides. An effectively ventilated metal roof helps to prevent energy waste and excess cooling cost that can occur when attic heat builds up with.
Jul 9, 2020

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Can you walk on metal roof?

Most metal roofs are manufactured and installed in such a way as to be safe to walk across without the worry of damaging the roof. You might mark or scuff the finish or paint on your metal roof, but average foot traffic shouldn't significantly impact the longevity or performance of your metal roof.May 7, 2019

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How much should a metal roof overhang?

A typical metal roof overhang may be 2 to 4 inches, or even less. Some slight overhang is recommended, in conjunction with a drip edge flashing, to prevent water from getting under the roofing and onto underlying wood.

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Is a metal roof better than a shingle roof?

  • Well, a metal roof is definitely better than a shingle roof. And the other thing about putting in a metal roof is today, the metal roofs have low-e coatings.

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Is metal roof heavier than shingles?

  • A metal roof must be heavier than an asphalt shingle roof. Many people think so, but metal roofs are actually a lot lighter than asphalt shingles. Generally, metal roofs weigh 1.4 pounds per square foot, and asphalt shingles averages between two and five pounds per square foot.

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Is metal roof more expensive than asphalt shingles?

  • Metal roofing is more expensive than asphalt shingle roofing materials. Usually, a good quality standing seam roof or a stone coated steel roof can cost around 2 1/2 to 3 1/2 times as much depending on how difficult the installation is and where it’s located.

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Is metal roof cooler than shingles?

  • Metal reflects sunlight, keeping it cooler inside, while asphalt shingles, particularly black ones, absorb the heat of the sun, making a home that much warmer. New, white- or light-colored metal roofing with proper ventilation is better than old metal roofing, and special sealants can further cool down the material.

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Can you put metal roofing over old shingles?Can you put metal roofing over old shingles?

This is the minimum that needs to be done. Some people think that they can just install the metal roofing right over the old shingles roof without any barrier in between, but this is highly not recommended. The problem with this is that as the metal heats up and expands or cools down and contracts, it moves a little on the roof.

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Which is better steel roofing or asphalt shingles?Which is better steel roofing or asphalt shingles?

Steel roofing offers many benefits over slate tiles or asphalt shingles. Metal roofing is resistant to fire, rot, and termites. Manufacturers provide 30-year warranties on metal roofing products. Installing steel roofing over existing roofing materials is fairly simple.

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Why are my shingles missing from my roof?Why are my shingles missing from my roof?

Missing or damaged shingles are perhaps the biggest issue that homeowners tend to incur with this type of roofing material. It can often indicate a major problem. It takes a powerful force to remove shingles from their spots such as strong winds, heavy raining, and snow.

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What's the best way to install a metal roof?What's the best way to install a metal roof?

You have two basic options when it comes to installing a metal roof: Standing seam solutions. With the first option, you place small panels in horizontal rows, giving them the appearance of traditional shingles. With the second option, long, single panels run vertically all the way from eave to ridge.

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Should I remove shingles before metal roof?

Your local roofing contractor may recommend tearing off your old shingles before installing a metal roof if any of the following conditions apply: Rough or uneven asphalt shingle roof will affect the metal roof's appearance. ... Nails and screws for the metal roof won't reach far enough into the layers of existing roofing.Nov 4, 2019

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Can I install a metal roof myself?

Metal roofing systems that you can install yourself are readily available, but you need to feel comfortable working with metal (and you'll pay a pretty steep price). The only specialty tool you'll need is a locking sheet metal tool (available at roofing suppliers or online).

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Can metal roofing go over asphalt shingles?

The short answer is yes, you're able to roof over your old asphalt roof with a new metal roof under the right circumstances. ... You'll 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.Jul 24, 2020

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Can a metal roof go over 3 layers of shingles?

Metal roofing is a more efficient and longer-lasting roofing alternative to asphalt shingles. ... You can generally install a metal roof on top of shingles as long as there are fewer than four layers of shingles on the roof, but the exact standards vary by area.

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Can metal roof go over two layers of shingles?

In simplest terms: Yes, you can install a metal roof over shingles. ... Building officials in some areas will only allow a re-roof over one layer of shingles, while officials in other places may allow you to place the roof over two layers of shingles.Oct 19, 2019

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Can I walk on a metal roof?

Most metal roofs are manufactured and installed in such a way as to be safe to walk across without the worry of damaging the roof. You might mark or scuff the finish or paint on your metal roof, but average foot traffic shouldn't significantly impact the longevity or performance of your metal roof.May 7, 2019

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Do metal roofs need purlins?

In general, purlins are used instead of traditional decking when it comes to metal roofs. ... Decks can help support the enormous weight of roofing more easily, and therefore are recommended for larger projects, like industrial and commercial metal roofing.

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Is it cheaper to put a metal roof or shingles?

But if the roof is more complex with several valleys and peaks, though the material costs might still be about the same, asphalt shingles are going to install faster and cost less in labor than metal panels. That said, it is still hard to beat the longterm savings of a metal roof.

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How much is a metal roof for a 1500 sq ft house?

Metal roof cost in Southern California, California ranges from $10,600 to $57,800 depending on the size of your roof and type of roof system used. A basic 1,500-sf standing seam metal roof costs around $20,350.Jul 30, 2021

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Can metal roofing be installed over shingles?Can metal roofing be installed over shingles?

This is the minimum that needs to be done. Some people think that they can just install the metal roofing right over the old shingles roof without any barrier in between, but this is highly not recommended. The problem with this is that as the metal heats up and expands or cools down and contracts, it moves a little on the roof.

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Why do people put metal roofing over 1×4's?Why do people put metal roofing over 1×4's?

Installing the metal roofing over 1×4's allows the ability to also install additional insulation under the metal roof that can't be done the other two ways It creates an air gap between the back of the metal and the shingle roof which allows for airflow

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Should I put felt down before installing a metal roof?Should I put felt down before installing a metal roof?

Also, if the existing shingles on top are not level or in very poor condition, you may need to put a layer of roofing felt down or wooden frame over the shingles before installing the new metal roof.

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Can you put steel shingles on top of asphalt?Can you put steel shingles on top of asphalt?

If you want to install steel over asphalt, your best choice is to use a steel shingle system like the one shown instead of the more common (and more expensive) standing seam steel. In a standing seam roof, long, single panels run vertically all the way from the eave to the ridge.

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Can you put metal roofing directly over shingles?

In almost every case, the answer is yes, you can lay down a new metal roof over an existing shingle roof. This is one of the many reasons metal roofs keep growing in popularity – their installation doesn't require completely tearing off the existing roof, which is a time-consuming and expensive job.

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What do you put between shingles and metal roofing?

Do I need underlayment for a metal roof over shingles? All roofs need an underlayment. If you're installing a metal roof over asphalt shingles, the shingles may be able to act as an underlayment for the roof. However, the shingles expanding and contracting can cause damage underneath the metal roof over time.Oct 19, 2019

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What is the best way to install a metal roof over shingles?

You will have a much stronger metal roof if it is being installed into good wood as opposed to rotten wood. 2) Install Underlayment Right over the Shingles before Installing the Metal Roof The second way to install a metal roof over a shingle roof is by applying an approved underlayment right over the old shingle roof.Jan 24, 2019

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What is the best underlayment for a metal roof?

Felt Underlayment (Asphalt Felt/Tar Paper Underlayment)

Known by many different names (including felt paper, roofing tar paper, and asphalt-soaked felt), felt underlayment is the most commonly used type of underlayment material on steep-slope metal roofs.
Mar 5, 2020

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Can you put underlayment on top of shingles?

A layer of underlayment installed on top of the existing shingles will help keep the granules of the old shingles from rubbing against the back of the metal and causing possible corrosion.

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Do you need to put strapping under metal roofing?

Single wood strapping is better than no strapping, as it creates a wider gap between the existing roof decking and the metal roof, but doesn't afford enough ventilation to resolve condensation issues. It also does not allow leveling of the roof, which corrects swells and swales on the roof.

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What underlayment to use for shingles?

What Is Roofing Underlayment? Roofing underlayment is what lies between the shingles and the roof sheathing, or roof deck, which is typically either plywood or OSB. It's installed directly on the roof deck and provides a secondary layer of protection from the elements, including rain, snow, and wind.

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Can you use synthetic underlayment under metal roof?

Finally, once again due to its polymer composition and strength, synthetic underlayment offers greater longevity than its paper-based counterpart. So, if you are looking for the best underlayment to install under a metal roof, a synthetic underlayment is your best option.Aug 1, 2019

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Should I use 15 or 30 lb felt?

If your roof does not have a steep pitch, you can use #15. This weight of felt is a good economic choice if you have a standard roof. But if your roof has a steep pitch, #30 is a better option because it is thicker and tears less during installation. With #30 you get a thicker layer of underlayment and protection.Jun 27, 2017

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Do you have to put plywood under metal roof?

As long as the interior of your roof is protected from moisture accumulation, underlayment is not required, though homeowners planning to insulate their house heavily may choose to install plywood to protect their investment. ...

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How do you put on metal roof over shingles?How do you put on metal roof over shingles?

A common installation tactic for adding metal roof over shingles is to add small slats of wood and secure those slats of wood to the roof decking. These slats of wood run perpendicular to the metal roofing itself. The metal roofing is then secured to these slats of wood on the roof.

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How to install steel roof over shingles?How to install steel roof over shingles?

The second method of installing metal roofing over pre-existing shingles is by using battens or purlins. These are nailed or screwed down into the roofing deck, and then the metal panels are secured to them. Using battens or purlins helps avoid the issue of irregular shingles, as it provides a flat surface to attach the metal panels to.

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What is the best material for metal roofing?What is the best material for metal roofing?

Steel -- Steel is the most common metal roofing material. It's sturdy, and experts have spent a lot of time determining the best ways to protect it from rust. Manufactures generally use a zinc coating, a sealant and some heavy-duty paint to protect the material from the elements.

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Are shingles a good roofing material?Are shingles a good roofing material?

The advantages of asphalt shingles are: Fiberglass shingles offer good fire protection Look good on most any style home Shingles are often the most affordable roof covering option, especially in good/better ranges The best asphalt shingles are a 30-year roof solution installed on homes located in moderate climates More items...

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Is metal roof better than shingles?

  • Metal is Lighter than Shingles. Metal roofing is lighter than shingles per square foot, so it can be applied over an existing shingled roof. This is not as leak proof as a strip and re-roof using water and ice membrane and shingles, however.

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Are metal roofs cheaper than shingle roofs?

  • Asphalt shingles are generally cheaper than metal roofing, although their actual cost may depend on a number of other factors as well. The most basic types of asphalt shingles are the lowest priced, also these are typically quite plain in appearance.

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Is it better to remove old shingles?

While a repair job can often be more convenient and somewhat more cost-efficient, placing new shingles over old ones is never a good idea. Whether repairing one section of roof, or a replacing a whole one, it's always best to pull up the old shingles before putting down the new ones.11 jul. 2017

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Is it OK to reroof over old shingles?

The answer is yes, you can lay new roof shingles over old ones. ... You can't do it with wood or slate, for example, and you should never mix materials, such as laying asphalt shingles over cedar shakes. Also, the old roofing has to be in pretty good condition. Otherwise you're just putting lipstick on a pig.

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How long does a reroof last?

The 26 gauge and 29 gauge cheaper metal roofing options can last for up to 25 years if taken care of. On the high-end, the 24 gauge metal roofing option can last for up to 50 years. However, most manufacturers offer a 20-year warranty and some even a lifetime warranty which is dependent on the metal used.7 okt. 2020

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