Corrugated metal roofing is a metal sheet that is roll-formed into metal panels. These panels are then attached to the roof with screws. The traditional shape of corrugated sheet metal is round and wavy. It is low cost, lightweight, durable, energy-efficient, long-lasting, and easy to install. Corrugated metal roofing is an excellent alternative to asphalt shingles or clay tile roofs. It is used for commercial and residential applications and both metal roofing and metal siding projects.
A corrugated metal panel, as described here, is not a single product. These units are manufactured all around the world and are common as low-cost roofing solutions. Though often referred to locally as iron, aluminum, or metal sheets, typical corrugated roofing sheets are made of steel. Not all are galvanized, and they vary from 27 gauge to 10 gauge. A standard sheet is one meter wide with a corrugated wave period of approximately 15cm and a peak to peak amplitude of 5cm. Sheets typically come in three lengths: 3 meters, 2.5 meters, and 2 meters. There are many companies and distributors; therefore, the links provided here are, for example, only.
Market Suggested Retail Price
Distributors / Implementing Organizations
Most urban centers have the resources to cut and mold such simple roofing sheets. The rolls of raw steel are often imported.
As one of the most common building materials globally, corrugated metal panels have standard applications and informal, recycled uses. Below are a few notable articles written by practitioners in the field. These articles cover manufacturing and construction methods and the pros and cons of structures built with the product.
Intellectural Property Type
User Provision Model
This product can be purchased directly from manufacturers, distributors, local vendors. International organizations also use them.
Distributions to Date Status
Unit dimensions (cm)
100*200, 100*250, 100*300
(Overall, the manufacturers produce sheets with a 100cm width in different lengths.)
Steel (non-galvanized), Aluminum
Fire Resistance (hr)
Class A, B, or C in fire resistance (varies by the manufacturer)
Thermal Insulation Capacity
Compressive Strength (MPa)
Most effective in dry, mild climates. Effective in warm climates when paired with a dropped ceiling.
A standard sheet is one meter wide and comes in three lengths: 3 meters, 2.5 meters, and 2 meters. Not all are galvanized, and they vary from 27 gauge to 10 gauge. The panels have a corrugated wave profile period of approximately 15cm and a peak to peak amplitude of 5cm. Aligned on roofing structure, overlapping one peak and valley, the product effectively covers 80cm. The corrugation creates a flexible width and rigid length.
The rusty panels can be replaced easily when assembled properly.
As the panels rust and become less effective, they are often consolidated to contribute to the wall, window, door systems, and informal constructions. Non-galvanized sheets are more prone to rust than the galvanized ones.
Manufacturer Specified Performance Parameters
Vetted Performance Status
Typical panels themselves do not present health risks. However, when placed upon low structures with poor ventilation, solar gain can transfer substantial heat to the interior. This can create unfavorable conditions for occupants.
Complementary Technical Systems
Panels are typically paired with framed roofing structures. Roofing nails, with a 1.5cm dia. cap, are typically located on every other peak. Sealing washers are preferred. In warm climates, dropped ceilings are important for both thermal and acoustic (during rains) comfort.
Academic Research and References
This informative blog discusses manufacturing processes and applications for such panels.
Compliance with regulations
Relevant (American) standard: Steel Deck Institute
It is important to pair corrugated metal roofing with proper ventilation or a suspended ceiling to minimize solar heat transfer to interior spaces and reduce acoustic transmission when it rains.