Corrugated steel roofing, offers the original style of corrugated (iron) steel roofs. At an average cost of €4.00 to €8.00 per square foot, corrugated metal is priced somewhat at the low end, and yet it’s far more durable, energy efficient, and with proper maintenance can last longer than any other roofing material.
What Is Corrugated Roofing?
Corrugated Sheet metal which is typically galvanized steel or aluminum, gets put into a roll forming machine that shapes the metal sheet into the curvy U-shaped patterns.
Corrugation gives metal panels considerable structural strength, which makes it possible to use these otherwise thin sheet metal panels for building applications, such as roofing and cladding.
Corrugated Steel Roofing
Because of the Industrial Age, steel has became relatively cheap and plentiful. Metal was see as the kind of material that offers an economically way to cover large agricultural and industrial buildings. The corrugated steel panels were often non-coated, but that was not a problem, since there were plenty of spare steel roof and wall panels to replace any corroded ones.
As steel corrodes, it develops visible rust. When the old steel panels would get too unsightly, or worse develop holes resulting leaks, they would get replaced with the shiny new pieces.
Today, corrugated metal panels are often chosen used because of their old style appearance, relatively low cost and availability any where in Cork.
Most modern corrugated steel panels are normally coated with a metallic paint finish to prevent oxidation and corrosion, and thus made to last for decades.
Corrugated iron panels tend to be 2 or 3 feet wide and come in varying lengths. When covering a roof, the panels overlap each other. They are then fastened together with metal screws with plastic washers that penetrate not just the two panels, but into the roofing structure.
Obviously, the metal panels themselves will shed water given the slope of the roof and the fact that metal is not a porous material. Yet, with the overlap, a seam is formed and to prevent leaking in that tiny gap, caulk is used.
Covering the entire roof with corrugated metal panels can go rather quickly, once the installer has the necessary experience.
Corrugated steel roofing can be a fairly simple when covering a small shed or garage etc.
However, the process can be a bit grueling for the less experienced and would benefit from professional roof installer, like all roofing projects. And since the cost is not too high, it would be best to go with the insured and certified roofing company, providing warranties on their products and workmanship.
Typically, the products are sold in a 26 or 29 gauge strengths. The smaller the gauge number, the thicker the material. And the thicker the material, the more durable it is. Though thickness does add a little more to the labor intensity, and hence cost.
Cost and Value of Corrugated steel roofing
Corrugated roofing is the least expensive metal roofing option, while Standing Seam is by far the most expensive option. With Corrugated steel roofing, it starts in the €4.00 to €5.00 per sq. ft. range. — That’s a full installation of say G-60 galvanized steel, 29 gauge, painted (with acrylic paint) panels, charged by the square foot.
The Advantages of Corrugated steel roofing
- Very low cost, both for material and overall installation
- Being metal, it is fire resistant, and mold along with bugs will not be a problem
- Multiple color options
- Metal roofs provide excellent value
Disadvantages of Corrugated steel roofing
- While it is not leak proof, as caulking will not last as long as the material itself
- Generally needs maintenance after 15 years, such as inspecting / fixing fasteners, re-caulking, or re-coating paint
- Aesthetically, not the most beautiful of metal option available today