What is a corrugated metal roof?
Corrugated metal roofs may be some of the most familiar to you, especially if you live in a rural area or spend time around industrial parks. They are distinct because of the way the metal is shaped. Corrugated metal roofs look wavy with their raised and flat layers of metal. They are designed that way to increase the roof’s strength, which is valuable when using lightweight metals like aluminum. These types of roofs are especially valued for their toughness, durability, longevity, and low maintenance requirements.
While traditionally used in agricultural and industrial settings, as design technologies and metals have improved over the years, increasingly corrugated metal roofs are being installed on homes. They offer the same protection as roofs installed on commercial buildings.
Corrugated metal roofing pros and cons
If you are considering a corrugated metal roof for your home or business, you’ll want to weigh the pros and cons of this type of roof.
- Longevity: Like most metal roofs, corrugated metal roofs can last 50 years or more, depending on the material used.
- Durability: These roofs hold up to severe weather, especially high winds, really well. Depending on the type of material used, they are also resistant to corrosion and do not crack. Some like galvanized steel are resistant to rust.
- Safety: Corrugated metal roofs are highly fire resistant. They do not spark or ignite.
- Energy Efficiency: Because they reflect heat, they can reduce cooling costs by 10% to 25%.
- Variety: Corrugated roofs are available in a variety of materials including aluminum, steel and copper. You can also get the metals in a variety of colors to match your building.
- Environmentally friendly: The metal is 100% recyclable, and most metal roofs are made from 25% to 95% recycled content.
- Costs: The materials cost as much as two or three times that of other roofing materials, so initial installation costs can be high.
- Noisy: In heavy rain or hail storms the roofs can be noisy. But added insulation during installation usually prevents problems with noise.
- Issues with expansion and contraction: Improperly installed panels can loosen when the metal expands and contracts with temperature fluctuations
- Performance: If the roof is poorly installed, it can be seriously damaged by water accumulation.
- Difficult to match: If repairs need to be made, colors can be difficult to match.
How much does a corrugated metal roof cost?
Costs will vary depending on the slope, pitch and size of the roof. The average cost runs between $10,500 and $19,500 for a single story home. Depending on the type of metal used, these average prices break down to about $3.50 to $6.50 per square foot. You will also need to factor in such costs as labor, which will vary by roofing contractor.
How much does roofing tin cost?
Tin is a common metal used for corrugated metal roofs. Roofing tin costs anywhere between $3 to $15 per square foot. To roof an average single-story home it would cost you anywhere between $9,000 to $45,000. The costs will vary based on the slope, pitch and size of the roof, as well as costs of labor.
How much does corrugated metal roofing weigh?
While it may sound strange, metal roofing of all kinds is generally pretty lightweight. Most corrugated metal roofs come in either 26 gauge or 29 gauge. Twenty-six gauge weighs in around 0.90 to 1 pound per square foot, while 29 gauge runs about 0.60 to 0.65 pounds per square foot. This is actually lighter than most asphalt shingle roofing, which weighs between 2 to 5 pounds per square foot. So, there’s no need to worry whether or not your home can support a corrugated metal roof.
Can you paint corrugated metal?
Yes, corrugated metal can be painted. In fact these days metal roofs come in a variety of colors to fit any home or building design. With pre-painted metal roofs, the finish is a baked-on factory finish that you can repaint if needed. You can also paint bare metal roofs. When painting metal roofs yourself, it’s best to use acrylic latex paint, and prime the metal with a galvanized metal primer. The primer will inhibit rust and helps the paint bond better.
How is corrugated metal roofing made?
Other than aluminum, galvanized steel is becoming one of the most popular materials for corrugated metal roofs. This kind of steel is highly rust resistant. Corrugated steel is made from sheets of wrought iron often covered in a zinc coating. The steel is then shaped and rolled into corrugated sheets.
Copper is also another popular material for metal roofing. Copper is also sometimes use for propane and natural gas lines. If these lines leak, you’ll need a professional for gas line repair.
Do corrugated metal roofs leak?
While corrugated metal roofs are highly durable, they can be vulnerable to leaks, especially if improperly installed. Most often leaks occur when excessive moisture gets to the steel nails or screws that fasten the metal panels to wood or metal trusses. The nails or screws rust, and leaks develop. Strong winds can also cause leaks when they separate overlapping edges of panels. This allows water in and causes leaks.
Does corrugated metal roofing rust?
While metal roofs in general can be vulnerable to rust, corrugated metal roofs are some of the least susceptible to rust and corrosion. This is largely due to zinc and other corrosion-resistant coatings that are applied to the metal when it’s manufactured. Once panels of galvanized corrugated metal is manufactured it must be stored indoors in a dry area. When improperly stored it can develop what’s known as “white rust” which affects the zinc that coats the metal. If this type of rust is left unattended it can cause the metal underneath to oxidize and rust.
If you are interested in installing corrugated metal roofs in Indianapolis, IN, the professionals at JAGG Premium Roof Systems are the team to depend on for all your roofing needs. Call us today at (317) 348-0180 to schedule an appointment.