The traditional galvanized roofing sheets are in which the metal roofing is the corrugated steel sheet that is galvanized. This then forms a kind of roofing sheet that is termed as corrugated galvanized steel roofing sheets.While opting for a corrugated roofing system, the most important factors in the same are the roofing sheets that come with galvanized metal or the ones with galvalume coating.

Depending on where these are to be used, one might pick either roofing sheets or the sheets that are galvalume coated. The process of galvanization and making of galvanized sheets occurs when these sheets are dipped straight into hot and molten zinc. In this process, the hot, molten zinc binds with the metal so as to form a shiny and rust resistant surface that increases the life of the galvanized iron roofing sheets.

In the process of galvanization, it so happens that the iron molecules present in the steel bind themselves with the ions in zinc thereby creating the shine that is present on the corrugated galvanized steel roofing sheets.

Corrugated galvanized steel roofing sheets

After this coating hardens, the entire  corrugated galvanized steel roofing sheets are put into a cold-forming corrugation process so that they may corrugate and gain much more strength and stability. These corrugated galvanized steel roofing sheets are most often used in agricultural buildings in which case the threat of rust is understandable and at the same time the building costs and investment must be kept pretty low.

There are quite many advantages to these cheap  roofing sheets; they are absolutely low-maintenance, economical, with enhanced strength, long lasting and offer superior protection.   

There are various types of  roofing sheets; they could be galvanized aluminium roofing sheets or galvanized iron roofing sheets. The galvanized iron roofing sheets are lightweight, easy to transport. These are used in rural and military buildings since ages and to build water sheds and tanks in rural areas. Undergoing the process of galvanization inhibits the corrosion that might otherwise take place.

In case of marine areas that have a lot of salt and humidity in the air, the process of corrosion is pretty fast and in such a scenario, by opting for the iron roofing sheets, the client is on a much safer side protecting the establishment from extreme weather conditions.

Galvanized aluminium roofing sheets

Yet another option is the galvanized aluminium roofing sheets wherein commercial or residential establishments are incomplete without either of the two. The metallic coating that forms the galvanization quite beautifully sacrifices itself and faces the wrath of the harsh weather conditions, undergoes the process of oxidation so that it may be able to protect the aluminium roofing sheets or iron roofing sheets.

As zinc is a more active metal than that of aluminium or iron, it is used to galvanize these metals. Zinc oxide thus stands as a barrier to protect the iron sheet from tuning to rust or ferric oxide.

The  galvanized iron roofing sheets perform quite similar functions; however, the pricing of the two varies. In the case of corrugated  steel roofing sheets, those are almost twenty percent costlier than that of steel roofing sheets. This is because aluminium roofing sheets are more resistant to salt water, and corrosion while in comparison galvanized steel roofing sheets are a notch lesser than galvanized aluminium roofing sheets.

In the case of steel roofing the warranty is not provided when it comes to the coastal areas as their capacity to withstand salt water and other humid conditions is a little lower. There is always a chance that the metal may separate from the edges and that there might be corrosion and rusting beginning from the sides.