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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Galvanized vs. Galvalume Corrugated Sheets as Interior Design Surface
Q. Dear Sirs,
Now we are seeking for a manufacturer who can build up the thin galvanized steel panel. The product description is its the basic sheet is a steel, on the surface this two-side need to be plated with 55% aluminum and 43.4% zinc, 1.6% silicon. The thickness of plating is 27 on one side of the steel sheet. The products total thickness is 0.3 mm. Are there any manufacturer of this kind in U.S.? If you have any ideas, please give us your suggestion. Thank you again for the information.
Looking forward to receiving your comments.
Hiroshi Tada- Ageo-shi, Saitama-ken, Japan
2002
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A. Hi, I think you are telling something about Galvalume, i.e., composition of coating materials would be 55% zinc and other 45% aluminium. This process of galvanizing has become popular nowadays in lots of countries around the world and it gives a lot of advantage to end users. Feel free to ask any question on the above. Mahbub hossain- Narayangonj, Dhaka, BANGLADESH 2002 A. This material is called Galvalume(R) Sheet Steel, and it is produced according to Specification ASTM A797 "Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process." For further information and suppliers, there is a trade association website at http://www.steelroofing.com/ Ken Vlach [deceased]- Goleta, California 
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from. 2002 |
Multiple threads merged: please forgive chronology errors :-)
Q. Anyone ever used Galvalume (This is an Aluminum-zinc coating)? The main reason I do not want to use Galvanized steel sheets is the rust that will appear on the cut edges. Will the same rust appear on the cut edges of Galvalume? The clear zinc w/chromate (ASTM B633 ) finish is rusting.
Ziad Zeid- Fremont, California, USA
A. Hi Ziad,
A cut edge means that bare metal is exposed. You will see rust on a cut edge of Galvalume, just as you would on any zinc-coated steel.
George Gorecki- Naperville, Illinois
Q. Anybody have any thoughts on what is better, Galvalum corrugated siding or galvanized corrugated steel?
Thanks for your thoughts or experiences.
carpenter / handyman - Oakland
2006
A. It's better you use galvalume sheets; they are galvanized sheets & color coated.
The galvanizing is done not only with Zinc but it's a mixture of Zinc, Aluminum & Silicon.
Regards,
- KOLKATA, India
November 2, 2012
Q. I am studying in interior design and I am presently doing research on materials that can be used in an unusual way. I have a question in regards to corrugated galvanized sheet metal and its potential use as wall covering/finish for interior spaces (residential or commercial). I saw in an interior design magazine that rooms were sided with corrugated galvanized sheet metal and I found it very original and innovative. I would like to know the pros and cons of using this material as siding on walls, in terms of corrosion, maintenance, durability, light reflectance, sound proofing and cost (per sheet or square feet or whatever).
Thank You very much for your quick response, I really appreciate your collaboration.
Martine Simoneaustudent in interior design - Twinsburg, Ohio
2003
A. The American Galvanizers Association (www.galvanizeit.org) has considerable information.
The Galvanizers Association (www.hdg.org.uk) has an on-line Hot Dip Galvanizing magazine with many architectural articles.
The GalvInfo site (www.galvinfo.com) has galvalume, galvannealed and painted galvanized sheet info.
You may need to visit a contractor supply center for some answers.
Ken Vlach [deceased]- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2003
A. I used Galvalume to cover the brick columns in front of my house. Bent 26 gauge 7/8" depth, then secured with screws. Looks fabulous and receive many compliments.
Lis Walk- Sacramento, California
February 19, 2011
A. I used galvanized metal sheets for a ceiling in a tree house and like it really well.
- Clearmont, Missouri USA
December 29, 2011
A. Hi. Galvanized electrical transmission towers often last decades without maintenance -- sometimes 75 years or more, so the corrosion resistance can be outstanding. The proviso I would add is that this corrosion resistance is largely attributable to the formation of very stable corrosion products like zinc carbonates which form slowly over the years; and galvanizing can also deteriorate to voluminous white rust if stored wet with no breathing room. So I would personally be a bit concerned about its use in indoor bathrooms despite some reports of success.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 2014
Q. Please inform me of the specific resistance of Galvalume at 600 °C?
B.G.SHAH- Anand, Gujarat state, India
2006
A. Hi B.G. Galvalume melts at 580-600 °C.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
January 2014
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