What is a galvalume roof?
Zinc is an iron plate that is coated with zinc only. While galvalume is a steel plate coated with a mixture of aluminum, zinc, and silicon. The composition of the galvalume coating is usually 55 percent aluminum, 43.5 percent zinc, and 1.5% silicon. It is this layer that will give speciality to galvalume.
What is the difference between spandex and galvalume?
As the name implies, Galvalume (galvanized and aluminum) is a steel plate coated with a mixture of aluminum, silicon, and zinc. Meanwhile, Spandek materials generally only consist of aluminum and zinc.
What are the disadvantages of galvalume roofing?
- Very Easy to Heat. Galvalume materials such as aluminum are heat conductors, so if you use this roof, don't be surprised if your house will feel a little hot.
- Noisy
- Easy to Fade
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