Steel roofing sheets are sold by manufacturers and suppliers in various types of materials like corrugated steel, terne coated stainless steel, aluminum coated, copper, aluminum-zinc, galvalume or galvanized steel and aluminum and other type of different combination’s. Typically, they come in different sizes, shapes and gauges.
A coated steel sheet is available from.50-12 meters in length with thickness of.40mm to.7mm and effective width of 1000 mm. This material has been around for nearly two hundred years. It is very popular for roofing in the construction industry because of its outstanding anti-corrosion and excellent thermal properties. Coated steel sheet is also fire resistant and enjoys high rating for being a weather tight building material. It is very versatile and flexible and can be formed into a countless number of structural and aesthetic building decors. Coated steel sheet can be a combination of aluminum-zinc alloy and others.
Corrugated steel roofing sheets have been in demand for many years. They are available in many different colors and finishes. The sheets can be procured in lengths from 0.5m up to 10m and can be used for many kinds of roofing projects.
Stainless steel roofing sheets (double standing seam) for many years have produced high quality and technically proven roofing products for the construction industry. These thin and lightweight materials have excellent anti-corrosion, visual attractiveness and high mechanical properties making them very much in demand by architects, owners and developers.
A polyester coated aluminum sheet has a precision rolling coating system using infrared heating technology. It has four roller coating line and thickness which uses a high molecular polymer as monomer and alkyd. The coating is ultraviolet rays (UV) and inclement weather resistant. Its gloss finish can be classified as matte and glossy and its paint surface has luster and smoothness in it.
With regards to galvanized color coated sheets, take a look at some of its technical specifications. Its base metal is high tensile steel with a coating mass of 120 GSM. The coated STD is IS: 277/JIS 3302 with a yield strength of 240 Mpa. Its thickness and tolerance are 0.55mm &.6mm and + 0.03 as per IS: 513 respectively.
Another specialized type of steel roofing sheet is the crimped curved sheets which bring new and innovative look and design. The combined curves and contour shapes and angles produce many types of building products. Advantages of this steel roofing sheet is you get less cladding material requirement for covering a curve, less framework support requirement for roofs and elimination of many flashings and capping. End result is significant construction cost savings.
When it comes to the galvanized steel sheet, they have been very much in demand for the past century. It is now a base material for the Polyester and Plastisol roofing coated sheets. Galvanized steel sheet boasts of its high quality Plastisol sheet which is quite sturdy. Plastisol is primer coated and the PVC rolled into it extends its life span to about 30 years. It is also fade and scratch resistant and enjoys a high fire resistance rating.
How about the galvalume sheet steel? This steel material is a 55% Al-Zn coated steel sheet suited for roofing projects. Many architects, building owners and developers/contractors approve this galvalume steel roofing sheet because of its versatility, long term performance, beauty and ease of installation.
There are many other variable types and designs of roofing products made from the above mentioned steel roofing sheets. With this basic information, you will be equipped with some important knowledge you can use when the time comes that you will be involved in any domestic, commercial or industrial roofing design and installation.