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The pros and cons of using metal roofs for your home


Whether you're buying a home with a metal roof or considering installing it, here's what you need to know.

Whether you're roofing a brand new home or your current roof requires renovation, there are many roofing materials on a wholesale price available. But regardless of what roof style you have, metal roofs can be an attractive option due to their longevity, minimal maintenance. And energy efficiency. When it comes to materials, options include steel (galvanized, galvalume, or corten), aluminum, copper, zinc, and tin. Visit Sydney Roof and Building Supplies today! 

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The product types are vertical seam, with preformed panels and granular coated panels. Style options allow you to achieve the look of asphalt shingles, slate roof, clay shingles, wood shingles, or vertical panels. Make sure your metal roofing product is tested, labeled, and listed by a testing organization, such as UL, FM Approvals, or Intertek, for meeting stringent wind, fire, and impact rating requirements. Remember also that the installation may vary depending on the geographical location,

Advantages of metal roofs

Metal roofs offer many benefits, including:

  • Longevity. Metal roofs can last between 40 and 70 years, depending on the material used. Traditional asphalt roofing materials have an estimated useful life of approximately 12 to 20 years.
  • Durability. If installed properly, some metal roofs can withstand wind gusts of up to 140 miles per hour, are not subject to corrosion or cracking, and may be impact resistant (depending on the type of metal you choose). Additionally, metal roofs do not need the periodic and expensive maintenance that other roofing materials often require. However, they must be inspected periodically to make sure that no repairs are required.
  • Safety. Metal roofs don't produce sparks or erupt during a wildfire or lightning strike.
  • Energy efficiency. Metal roofs reflect ultraviolet and infrared light rays that contribute to radiant heat from the roof surface, which can result in a 10-25% reduction in cooling costs.
  • Environmental friendly. Metal roofs not only contain 25-95% recycled material, depending on the material used, but are also 100% recyclable at the end of their useful life. In contrast, most shingle waste ends up as part of other construction-related waste - producing up to 20 billion a year.

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Disadvantages of metal roofs

Despite of its advantages, metal roofs do have some of the potential downsides.

  • Affordability Metal roofing can cost up to two to three times more than other roofing materials. While the lifespan of a metal roof is way longer, investing on a metal roof only is an ideal if you intend to stay in your home long enough to enjoy the cost benefits.
  • Noise. Metal roofs can be louder than other products during a heavy rain or hail storm, depending on the type of deck used during their installation (spaced or solid). Sometimes the problem can be solved by adding more sound insulation to the attic, but that could increase costs.
  • Expansion, contraction and fasteners. Assemblies for metal roofing materials added to large panels are designed to expand and contract as they heat up and cool down. However, the lifespan of both exposed and hidden fasteners can vary. Depending on the weather, the neoprene washers and screws used during installation could deteriorate and come off over time.
  • Inconsistency in terms of tonality. If a home has to be repaired or added years later, it may be difficult to find another metal that has the exact same hue as the existing one.
  • Performance. If water accumulates anywhere on the roof due to poor quality installation or repair, this can cause serious damage over time. Low-grade metals could be thinner and less durable. Some metals will rust in certain climates or dent easily than others during installations or in hail storms.

You may be interested in reviewing these roof replacement questions and insurance discounts related to roofing materials that you may be eligible for.

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