What is Cladding?

In the past, wood and cement boards are being used to provide fascia ceiling and sidings needs. Now with metal cladding which provides you with a pest-free, rust proof, fire resistant fascia, ceiling and sliding, you have beauty and durability over the years. This is the most sensible and economical alternative to wood, concrete, gypsum and mineral fiber boards. These come under the trademarks of VERSA CLAD, EZ CLAD and PANEL RIB. The best for sidings, fascia and ceiling systems.

What is Steeldek? What purpose does it serve?

Steeldek is a structural metal decking profile use to support concrete for flooring. This is a permanent form works which when used may save concrete, R-bars, time and manpower usage up to 30%. This comes in STEELDEK I, STEELDEK II, STEELDEK III and the Skyway STEELDEK IV. This is most recommended for high rise buildings and infrastructural bridge decking.

Why are there various roofing profiles?

Roofing profiles are there because of specific requirements. In buying a roof first you must decide what specific purpose you intend the roof to serve.

For residential roofing, the following roofing profiles are recommended:

Rib-type – for its simplistic beauty and economy, this comes in SPANDEK 1220, SPANDEK 915 and DURAWIDE 915

Corrugated – for its beauty, economy and better strength compared to SPANDEK. This comes in STANCORR 1220 , STANCORR 915 , ECONOCORR 1220 and ORDINARY CORR 915 . The difference is in the rib height.

Tile effect – for its beauty, economy and tile-effect look. This come is RUSKO , TIARA , SIENA and STEEL TILE . Each tile-effect is different and blend with you house motif.

Duo-rib – the beauty and economy of a rib profile but the strength of a dual rib as compared to SPANDEK . This is SUPER V CRIMP .

For commercial and industrial use, the following profiles are recommended:

Anti-leak – These roofing are sometimes called concealed fastening roofs (CFR) as the fastening of the roof is done by a clip and there are no pierce fastening screws directly holding down the roofing panel. These come in the trademarks of KLIPLOK, CRIMPLOK 407, CRIMPLOK 610, FLEXICRIMP and SPANLOK.

V-profile – these profiles permit the roof to be installed at almost zero slope or flat surface as the deep ribs permit flow of rainfall smoothly without having to slant the roof. These come in 100mm and 75mm rib heights and are available under the name MEGADEK 100, MEGADEK 75, and SUPER V DEK1220.

Why is Galvalume® sheet called by other names? Are all of these products the same?

The product is a 55% aluminum-45% zinc alloy coated sheet steel developed by Bethlehem Steel and sold commercially under the trademark Galvalume®, starting in June 1972. Bethlehem Steel later licensed other major steel companies to produce and sell the product using its patents and technology. In North America, the Galvalume® trademark is used by Bethlehem Steel, Dofasco Inc. (Canada), National Steel Corp., U.S. Steel and Wheeling-Nisshin, Inc. In Central and South America, Industrias Monterrey (Mexico) markets the product under the trademark Zintro-Alum, while Galvak S.A. de C.V. uses the trademark Galval. Steelscape, Inc. uses the trademark GALVALUME®. All of these products are the same generic 55% Al-Zn coated shee steel made by the same process using the same technology. When Philsteel holdings bought the franchise, It is Registered & Licensed as GALVALUME® 55 which is now the substrate used for all of PHILMETAL's routing profiles

How is it made?

Both Galvalume® and galvanized sheet steels are made by a "continuous hot dip" process. Coils of cold rolled steel are welded end-to-end and processed continuously on the coating line at speeds up to 600 feet per minute. The uncoiled sheet is first cleaned to remove rolling oils and mill dirt, and to reduce surface oxides so that the surface will accept the coating. These continuous sheets are first fed into a molten coating bath contained in an open top, brick-lined heated pot. The sheet then passes around a roller submerged in the coating bath and exits the bath vertically, pulling out with it an envelope of the coating material. As it exits, the sheet proceeds through a pair of opposing air knives, which are positioned above the bath and equidistant from the surface of the sheet. Most modern production lines have a coating thickness gauge feed-back control, which automatically adjusts knife air pressure and position to ensure that a uniform coating is applied. Various finishing steps are carried out to complete the process, after which the sheet is wrapped around a reel into a coated steel coil.

Why is it a good material for roofing?

Galvalume® sheet is an ideal material for roofing because of its extraordinary outdoor corrosion resistance and resulting long life. It can be readily rollformed into a variety of panels, as well as formed and stamped into tile and shingle facsimiles. It can also be factory painted to impart color and extend durability. Most important, it can be used in modern day steel roof designs which are strong, yet light weight. And unlike conventional nonmetallic roof systems, Galvalume® sheet roofs won't crack and peel when subjected to the sun and weather.

Galvalume® sheet is sold with AZ60 and AZ150 designations. What do they mean?

Galvalume® sheet is made to meet ASTM Specification A792. This specification covers a number of requirements, including coating weight. AZ60 and AZ150 are the coating weight designations indicating that, respectively,60 grams per square meter and 150 grams per square meter of the aluminum-zinc alloy coating have been applied to both sides of the Galvalume® sheet. Converting these coating weights to coating thickness, AZ60 is equivalent to 8 microns on each side while, AZ150 is equivalent to about 20 microns on each side.

What is the reflectivity of Galvalume® sheet?

Galvalume® sheet has good heat and sunlight reflectivity. Its bright reflective surface makes it an ideal material for roofing. During the summer it makes buildings cooler by efficiently reflecting away sunlight and reducing the amount of heat transmitted into the building. Likewise, it makes buildings warmer in the winter by reflecting inside heat from the underside of the roof back into the building. This good thermal reflectivity translates into energy savings by reducing cooling costs in the summer and heating costs in the winter. Tests have shown that only half as much heat from solar radiation is transmitted into a building fitted with a Galvalume® roof compared to a galvanized roof, and almost one-third less heat compared to a terra-cotta roof.

What are the advantages of a Galvalume® Concealed Fastening Roofs (CFR)

Leaking conventional, flat nonmetallic roofs are the biggest problem on nonresidential buildings for architects and building owners. Conventional roofs made with organic materials deteriorate even under normal environmental conditions. They embrittle from the heat and ultraviolet radiation from the sun. Then, as result of temperature fluctuations, they develop cracks, splits and tears. Finally, because they are flat, ponding water inevitably penetrates these brittle, cracked systems and leaks into the building, causing damage to goods and disrupting activities inside the structure. Leaks can be patched early in the life of the roof, but as time passes, leaks become more frequent and an expensive replacement of the roof is required. Such replacements often require tear off, extra labor and even a temporary building shut-down. Galvalume® Concealed Fastening Roofs (CFR) like (<u>KLIPLOK</u>, <u>CRIMPLOK</u>,<u>FLEXICRIMP</u>,<u>SPANLOK</u>) offer a weather tight, maintenance-free roof system that will last for decades on commercial, office and factory buildings. Galvalume® SSRs are economical to install, leak proof, maintenance-free, energy efficient, noncombustible and long-lived.

How does the corrosion resistance of Galvalume® sheet compare with that of galvanized sheet, and how long can a Galvalume® sheet roof be expected to last?

Galvalume® sheet has been successfully used in roofing applications for more than 25 years; it has been evaluated in outdoor R&D tests for well over 30 years. Based on these tests, in which corrosion weight losses were measured and compared with galvanized, Galvalume® sheet is projected to outlast galvanized sheet (with an equivalent coating thickness) in various atmospheres by up to nine times. Likewise, recent inspections of 82 low slope Galvalume® roofs up to 22 years old in the eastern U.S. confirms the R&D results. These roofs are in excellent condition and are projected to last 30 to 40 years before requiring major maintenance.