Step-by-Step Metal Roofing Installation – If you decide to install a roof yourself — or if you just want an idea of what to expect when the pros come — you can follow these basic steps to get started. Caution Roofing can be dangerous, particularly on tall buildings. Always take proper precautions to prevent slips and falls, and do not work in bad weather.
- 1 What should be installed under a metal roof?
- 2 Do you need anything under a metal roof?
- 3 Is it OK to put a metal roof over shingles?
- 4 Does a metal roof need a drip edge?
- 5 Do metal roofs leak more than shingles?
- 6 Should I put plywood down before the metal roof?
- 7 Are metal roofs hotter?
- 8 Can you walk on a metal roof?
- 9 How much should I charge to install a metal roof?
- 10 Do you have to remove an old roof to install a metal roof?
Can I install a metal roof by myself?
While most metal roofing styles can be installed as an advanced DIY project, metal roofing installation is complicated and can vary slightly based on the brand of panels or shingles that you select. We recommend that you install a metal roof with one or two helpers and fall protection equipment designed for roof work.
What should be installed under 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. Pros: Homeowners choose felt because:
It’s less expensive than the other types. It’s water-resistant, which helps keep water from penetrating the surface if any of it leaks through the roofing structure. It’s commonly used, so it’s readily available nearly anywhere.
Cons: Its disadvantages include:
It doesn’t last as long. It may not respond well to high-temperature environments. It doesn’t have the best recyclability. There may be better options for low slope metal roofs.
Price : The cost for felt underlayment will typically be the least expensive out of the three main types.
Do you need anything under a metal roof?
There are a lot of decisions to make while going through the process of having a new metal roof installed. What kind of panel are you going to use? What metal gauge are you going to use? What color roof are you going to choose? We understand that it can be overwhelming.
- In the process of making all these decisions, one aspect of metal roofing that gets overlooked is using underlayment.
- Metal roof underlayment is an important component of a metal roofing system.
- Some might choose to skip using underlayment to save money.
- However, the metal roof underlayment acts as an added layer of protection.
You can save money by using underlayment because it will help you avoid problems that would need to be fixed. The short answer is yes, your metal roof does need underlayment, But like most things in life, it’s not quite that simple. At Western States Metal Roofing, we have specialized in manufacturing metal roofing for over 20 years.
The Advantages of Using Underlayment When You Need Underlayment When You Might Not Need Underlayment
Is it OK to put a metal roof over shingles?
Can you put metal roofing over two layers of shingles? – You’ll need to check with your local building department to see if you can install metal roofing over two layers of shingles. Many of them will allow one or two layers of shingles, but no more than that. If they allow you, contact your local roofing contractor to see what they can do for you.
Do you need an air gap under a metal roof?
Metal roof coatings with solar reflectance can help building owners save substantially in annual cooling costs. Research has confirmed that creating an air space under a metal roofing system will increase energy savings during both summer and winter months.
A study was funded by the U.S. Department of Energy and conducted by the Oak Ridge National Laboratory to document energy savings of metal versus asphalt roofs. Scientists selected an asphalt shingle and a stone-coated metal shake for field-testing—both had comparable solar reflectance and thermal emittance levels.
The asphalt shingle was directly nailed to the roof deck, with no air space underneath, while the dark-gray metal shake was attached to a batten/counter-batten system that allowed for airflow underneath. The result yielded a 45-percent reduction in heat flow for the metal shake; about 15 percent of that reduction was attributed to solar reflectance, and an additional 30 percent of the heat flow reduction was due to above-sheathing ventilation.
- In cool or cold weather conditions, scientists confirmed that direct-nailed asphalt shingle roofs had significantly larger heat loss than attics with metal shakes and above-sheathing ventilation.
- The air gap appears to serve as an insulating layer, reducing heat transfer by 50 percent as compared to asphalt.
The study results have been corroborated by Florida Solar Energy Center and accepted by the ASHRAE SSPC 90.1 subcommittee, indicating that any type of metal roof can save a home or building owner up to 25 percent in annual cooling energy costs compared to a dark-gray asphalt shingle.
Does a metal roof need a drip edge?
Do you need a drip edge for your new roof? – If you are installing a metal roof, a drip edge is not required, especially if the roof is at a slant and installed to hang over an inch. Doing this will help direct the water away from the fascia. However, while it’s not necessary to have a drip edge, it is often highly recommended anyway.
Do you screw in the rib of a metal roof?
Do the Screws Go in the Ribs or in the Flats? – When it comes to corrugated metal paneling, one question that always comes up is exactly where to put the screws on the metal roofing in the first place. Many advise that screws should be put in the flats or valleys only, while others swear that the screws should go in the ribs.
To get an idea of how hotly-contested this topic can get, take a minute to scroll through the comment section of this popular metal roofing comparison shared by Skywalker Roofing owner Luke Wilson! Why do people get so passionate about this subject? Well, the screws-in-the-rib proponents say that putting screws in the flats could subject your metal roof to more potential points of leakage, since water is naturally directed to the flat areas.
Screws-in-the-flat fans counter by arguing that screws placed in the rib don’t create proper gasket compression, due to the presence of a void under the rib. Another potential problem with screwing into the rib is that it presents a higher risk of the screw pulling out during a wind event.
- So what’s the correct answer? As Luke Wilson points out in his follow-up video to address this question in particular, the correct answer is that screws should be fastened in accordance with the metal roofing manufacturer’s instructions, period.
- To fasten anywhere other than where the manufacturer recommends not only increases your risk of having problems down the line but it also nullifies the warranty for your metal roofing product.
And the fact of the matter is that most U.S. metal roofing manufacturers say you should put screws into the flat, because this location offers a solid wood surface just beneath the metal panel, resulting in a safer, tighter, more secure seal.
Do metal roofs need air vents?
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. Correct ventilation can also prevent heat and moisture damage to your insulation which also affects your energy savings.
How far apart do you screw metal roofing?
⅞” Corrugated Screw Location For Wall Panels Or Metal Siding – There will be five panel screws and one lap screw per screw line. The lap screw is the screw that sits in the high and it is designed for a light gauge metal to light gauge metal connection. Lap screws are spaced 12″ to 18″ on center. The panel screws are spaced out so that every third corrugation has a screw including both sides of the panel sidelap. Downloadable Screw Location Diagram We recommend that you use double sided mastic tape at the panel sidelap for a wall condition also. The mastic tape will make the panel more weathertight. Mastic tape is always used for a metal roofing installation. On a wall application, mastic tape is shown in our installation guide and we do recommend that it’s used.
Does a metal roof devalue a house?
1. Increased Home Resale Value – A new roof on your home is a great way to increase your home’s value — especially if you’re looking to sell it. A metal roof can improve a home’s resale value by up to 6% compared to a home with an asphalt-shingle roof.
Additionally, a report by Remodeling magazine shows a metal roof has a 61% return on investment, It’s true that a metal roof has higher upfront costs when compared to other roofing materials, but many homeowners find the costs to be worth it because of the many benefits associated with metal roofing.
Not only does a metal roof last between 40-70 years, they’re also extremely low maintenance, have stellar ratings for wind uplift and other harsh weather conditions, and provide a modern, stylish aesthetic that boosts curb appeal! All these added benefits are also extremely attractive to those looking to purchase a home.
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.
Since the material is also less likely to suffer damage from weather than other roofing materials, moisture may not leak inside your roof. Even though high-quality shingles can keep water out of your home, they’re more likely to lose their integrity since they have a shorter lifespan than metal roofs.
As a result, you may end up seeing more moisture damage from asphalt shingles than metal panels.
Do you have to seal the seams on a metal roof?
#1: Sealant is a secondary defense against water, not the primary defense. – The reason that sealant is added to a metal roof or wall system is to act as a secondary defense against water intrusion at flashing spots, laps, and penetration points. By no means should it ever be the first line of defense that keeps the roof from leaking.
Should I put plywood down before the metal roof?
Can Metal Roofing Be Installed Directly to Plywood? – Metal roofing should not be installed directly over the top of bare plywood, You do not have to install roofing shingles or other roofing material, but a felt sheet over the plywood is the bare minimum,
You may also want to install a slip sheet to protect the felt sheet from potential damage caused by the metal roofing. If you install your metal roofing directly on plywood without the protective layers, you greatly increase the odds of the roof leaking. You also run the risk of premature wood rot, as the felt sheet provides a layer of moisture prevention that keeps the wood dry.
Even without heavy rain, humidity can build up between the metal roofing and the plywood and ruin the wood. The slip sheet is also an important layer. This smooth, industrial paper is laid on top of the felt to protect the felt from the metal roofing material.
Is a metal roof noisy when it rains?
This is one of the most frequently asked questions we hear from homeowners interested in metal roofing. We’ll get right to the point–no, metal roofs are not loud in the rain. Preventing sounds from hitting hard, flat surfaces is key to noise reduction.
- A flat, uncoated sheet of metal–like the smooth surface of a drum–has no way to shorten the prolonged sound reflection, known as reverberation.
- The structure of a roof plays an important role in noise reduction, as well.
- If you’ve ever been in a garage, shed or structure that lacked a complete roof assembly, you likely noticed noise and reverberation from the rain.
Without the roof deck, insulation and underlayment, an uncoated sheet of metal will sound loud in the rain. But as soon as those building components are added, noise levels return to what could be generally expected with any other roofing material. But metal roofing products are more advanced than a flat, uncoated sheet of metal.
Why are metal roofs not more popular?
They’re Expensive (initially) The price for a regular asphalt shingle roof is approximately $1.75 per square foot. The cost to install a metal roof, however, can be anywhere between $3 and $14.
Are metal roofs hotter?
Reflective Surface – Asphalt shingles, wood, tile, and concrete all absorb heat and cause heat transference into your home. Metal roofs, however, reflect light and heat since they have such a low thermal mass. Reflective coatings only serve to aid this process, helping your home remain noticeably cooler than with other roofing materials.
Can you walk on a metal roof?
Can You Walk on a Metal Roof? – One of the metal roofing myths we’ve come across is the idea that you can’t walk across a metal roof. This rumor might have come from some of the other roofing materials that it is best to avoid walking on. Concrete or clay roofing tiles, for instance, can be damaged if walked across while asphalt can be prematurely worn out with any significant foot traffic.
- Metal roofing, however, doesn’t suffer from these limitations.
- Metal roofing can be walked but, homeowners should refrain from doing so for saf ety reasons.
- If a contractor does need to walk your roof, they should practice sound safety procedures and follow OSHA safety requirements,
- Can You Damage a Metal Roof by Walking on it? 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.
Do I need furring strips under metal roof?
Can you install metal roofing over a shingle roof without furring strips? – It is not recommended to install metal roofing over shingles without furring strips. The thermal expansion and contraction of the metal will rub against the shingle granules and the metal will corrode from the underside. The gaps introduced by furring strips also allow air venting which can reduce moisture.
How much should I charge to install a metal roof?
The cost to install a metal roof in 2022 can range anywhere between $3.10 to $29.65 per square foot, depending on the type of metal roofing. Basic metal roofing materials, like aluminum, can cost as low as $3 per square foot, while higher end metals like copper and tin can cost as much as $30 per square foot.
What is the easiest roofing to install?
Asphalt shingles are popular because they blend looks, longevity, and a reasonable price, and they’re typically the easiest to install, saving you money on labor costs as well. Specialty roofing materials like slate, tile, and metal tend to cost much more, but they can also last much longer—and they look nicer.
Do you have to remove an old roof to install a metal roof?
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.
- Metal, although super-strong, is very light, weighing less than a pound per square foot compared with as much as four pounds per square foot for asphalt shingles.
- Adding a metal roof over existing shingles doesn’t significantly increase the overall load for the home structure to bear.
- Along with saving the cost of completely removing the existing roof, installing a new metal roof over a current roof also brings the benefit of additional insulation above your home to prevent heat and cool from escaping.
And since we mentioned insulation, we should also mention that metal roofs are heat-blockers – they reflect heat away from their surfaces rather than absorb it. This means the extra insulation from your shingle roof will not act as a heat trap for heat emanating through your metal roof.