zinc roofing sheet be installed over existing roofing
Zinc roofing is a very attractive choice for homeowners who are looking for a metal roof that will last for generations. The material has a lot of great qualities that make it stand out among other roofing options, including its natural anti-microbial properties and ability to resist corrosion in harsh environments.
The most popular style of zinc roofing sheet is corrugated panels that feature a classic, ribbed design. The panels are lightweight but extremely strong, and the ridges and valleys of the cladding create a water drainage system that prevents pooling during heavy rains.
Another option for homeowners who want to install a zinc roof is standing seam metal roofing. This type of roof is created by butting together two lengths of the material, with raised joints that are either welded or crimped into place. The resulting system is watertight and can withstand severe weather conditions like hail, snow, and high winds.
Can a zinc roofing sheet be installed over existing roofing?
However, standing seam zinc roofs and cladding are susceptible to backside corrosion if the proper flashing and ventilation is not used in the installation process. The problem occurs when moisture is trapped between the cladding and the roofing deck, which then leads to mold, leaks, and backside corrosion. This type of corrosion can be avoided by using a separation mat in the roofing system that creates an airspace between the zinc roof and the substrate, and proper detailing at anchor clips and eaves to allow for proper ventilation.
Zinc is an ecofriendly roofing option because it is nonferrous, and therefore does not require as much energy to produce as copper or aluminum. It also does not corrode or release toxic elements into the environment after it is mined and fabricated. Additionally, it is fire-resistant and insect-proof and does not support the growth of mildew, fungus, or algae.
One of the most appealing aspects of zinc is that it ages naturally. The metal goes through an oxidation process called patina, which gives it a distinctive, colorful finish. In addition to giving the roof a beautiful aesthetic, the patina protects the zinc from rusting and weathering. It is also self-healing, meaning that if the surface of the zinc becomes scratched or damaged by an environmental factor, it will reform itself and eliminate any blemishes.
Zinc roofing sheets are increasingly popular in the construction industry due to their durability, sustainability, and aesthetic appeal. Made from the naturally occurring metal zinc, these sheets offer a range of benefits that make them an ideal choice for various architectural projects. Whether used for residential homes, commercial buildings, or historical renovations, zinc roofing sheets provide a long-lasting and environmentally friendly solution for roofing needs.
If you are interested in installing a zinc roof or cladding, you should speak with a professional roofing contractor to learn more about the material and the proper installation process. The professionals at Metal & Wood Roofing can help you select the right color of patina and roofing style for your home, and they will ensure that your new roof will look amazing for years to come! Contact us today to get started.