Corrugated panels, a type of metal roofing, offer excellent durability and low cost.
While corrugated metal accredited roofers are definitely worth looking at for these reasons, it is important to consider the potential drawbacks and costs before you make any purchase.
The unique "S" and "wavy" patterns used in corrugation have been associated with metal sheets. This process improves parallel rigidity and gives the metal more flexibility to bend perpendicularly to the ridges. Corrugating is a great way to increase strength in areas where it's needed while maintaining thin and light profiles for metal sheets. A panel's strength is affected by the depth of its corrugations. A deeper corrugation will result in greater strength.
You can find corrugated metal panels in sizes 7/8", 34", 12", or 14". The value represents the depth of the corrugations. The 7/8" panel is the strongest size because its corrugations are deeper. Industry experts have included crimped, ribbed, and other roll-formed patterns as part of the definition for corrugated metal. They all provide the same performance.
How much does a corrugated metal roof cost?
Depending on the material, corrugated metal roofing panels can cost anywhere from $4 to $15 per square foot. For an average 1,700-square foot roof, a full corrugated metal roof could cost anywhere from $6,800 to $25,000,000.
To determine how much-corrugated steel you will need, remember that corrugated panels are slightly overlapped by installers to seal the seams. The panel's coverage will therefore be less than its out-to-out width.
Corrugated metal roofing covered
This is what corrugated metal manufacturers refer to as the "covering" of the panel. This should be considered by professional roofers.
Are you planning to do it yourself? Add the roof's area to the panel covering width. Based on this number, you can calculate how many panels are needed for your project.
You can quickly get a quote for a corrugated metal roof by using our roofing calculator.
The price of corrugated metal roofing is affected by several factors
The cost of roof installation depends on the pitch and complexity of your roof, the location and whether or not you hire a professional.
Project costs can be affected by the type and thickness of metal as well as the paint used to cover corrugated metal roofs.
Different types of corrugated metal roofing
The roof's strength is determined largely by the type of metal used, also known as the substrate. Steel and aluminum are the most popular choices, although premium materials like zinc or copper are also readily available.
Metal roofing's durability depends on how well it is installed, maintained, and the environmental factors. On average, steel and aluminum last 30 to 50 years while copper and zinc can last as long as 80 years.
Galvanized steel is also known as zinc-coated or galvanized steel. This metal is highly durable and very affordable. Galvanized steel can also be broken down depending on how thick its zinc coating is. This information is indicated by a manufacturer-specific "coating weight". Exposed steel can rust quickly so it is worth investing in thicker galvanized coats to make your roof last longer. You will have to pay more for other materials like galvalume or stainless steel. However, they rust much slower than galvanized steel.
Aluminum is another cost-effective option. It is also resistant to rust, making it great for coastal and humid environments.
Aluminum is lighter than steel making it an excellent choice to replace an old roof. Lightweight aluminum not only reduces structural stress but also makes it easier and quicker to install.
Zinc roofing might be the right choice if you don't want to have your roof replaced again. Zinc roofing can last up to 80 years due to its natural patina which protects it from corrosion. People are attracted to the unique patina's subtle blueish hue. To enjoy these benefits, however, you will need to pay more for patina than you would for galvanized or aluminum.
Copper is beautiful, but it can also be expensive -- a lot. Copper is a hardy metal with a unique gloss. It also has a long life span of 100 years that rivals roofing materials. Copper patinas after several years of being exposed to the elements, and it turn a beautiful blue-green color.
The thickness of the metal
Thicker metal sheets are more costly. You will get more strength in return.
Roofs without structural sheathing such as those on post-frame and pole barn structures may need thicker panels. In areas of strong winds, heavy-gauge metal roofing might be necessary to prevent denting or raising. Most homes have solid decking underneath that provides structural support. In these cases, panels on the thin side will suffice.
There are many drawbacks to corrugated metal roofing.
Corrugated metal roofing can be a great choice for roofs. It is durable, cost-effective, and more affordable than galvanized steel and aluminum.
Corrugated metal roofing can leak if it is not properly installed and maintained. Corrugated metal is not the most attractive of roofing materials. Corrugated metal isn't the most cost-effective option for roofing.
Potential for leakage
Corrugated metal roofing's biggest problem is the exposed seams and fasteners between panels. These are areas where water could leak through.
Even if seams are sealed properly and screws are driven correctly, temperatures can change over time and cause the screws to loosen and water to flow in.
Fashion is a tricky business.
A roof like a barn
Both corrugated metal roofing options and exposed fastener options have strong arguments.
Corrugated metal resembles the pastoral views of the countryside, for better or worse. The clean look that many homeowners want in a metal roof can be detracted by exposed screws. This roofing material is not the most affordable.
Corrugated metal roofing may not be the most expensive, but it isn’t the least costly.
If you are looking to keep your roofing costs as low as possible, stick with asphalt shingles. Metal roofs will provide a greater return on investment over the long term than shingle roofs. They last longer and are less likely to need to be replaced.