Introduction
Metal roofs have a long lifespan and are highly durable and resistant to the harsh weather conditions. Yet, like any roofing system, they do feature a few drawbacks homeowners ought to be mindful of prior to choosing. The most common issue is usually not the metal but rather its improper installation, which may result in leaks, movement, or early damage. Awareness of these potential problems will allow you to select the correct material, contractor, and maintenance plan. By using the right material and installation methods and providing the right maintenance, many common metal roofing issues can be avoided.
Metal Roof Problems: What Is the Biggest Concern for Homeowners
While metal roofing materials are highly durable, there are a number of potential problems that may arise over time. When homeowners are well informed about these issues, it can benefit them to make informed decisions and safeguard their investment.
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Greater Upfront Cost of Installation
The downside of metal roofing is the price. The #1 drawback of metal roofing is its cost. The installation can be much more costly with quality metal panels, protective coatings, specialized tools, and skilled labor when compared to asphalt shingles. But, over time, the longer life of the product may compensate for the investment.
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Poor Installation Can Cause Leaks
One of the main issues in installing metal roofs is improper installation. Water can enter the roof through seams and penetrations that are not properly sealed or fastened or through damaged flashing. No matter how strong the metal panels are, if there are different installation errors that make weak points in the roof system, the entire system cannot operate properly.
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Metal cans contract and expand
When temperatures rise, metal expands, and when the temperature falls, metal contracts. The continuous movement can put strain on fasteners, seams, and connections. When a roofing system is designed well, there is room for thermal movement, although if it is not installed correctly, eventually it will result in loose fasteners, gaps, or other issues related to the roofing system.
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Heavy Hail can cause dents!
While metal roofs can withstand many weather events, some metal roof panels may be damaged by large hailstones. Thinner the metal or softer the materials, the more susceptible it is. Damage to the dents may not immediately impact performance but can ultimately reduce appearance and/or cause protection coatings to fail or compromise the integrity of the panels.
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Rain will make more noise
Metal roofs may make a distinct sound when it rains heavily or hail, especially if not underlaid or covered with solid decking and insulation. This is typically not a problem in modern roofing assemblies. However, for those wishing to have a very quiet interior, insulation and roofing methods should be taken into account by the homeowner.
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Scratches can result in corrosion
Scratches, chips, or coatings that are damaged can allow the metal to come in contact with moisture and air. This can lead to corrosion over time, especially in high humidity or salty environments. Fixing compromised coatings will keep the roof’s protective barrier intact and its appearance.
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Hard to find skilled contractors
A metal roof system needs a different method of installation than shingle roofs. Sadly, not all roofing contractors will have the experience required for metal roofing. While a professional is the best option, not all professionals will be experienced in the installation of solar panels, leading to improper fastening, poor flashing, or bad sealing of joints that create costly issues and problems.
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May require special materials for repair
Unlike a damaged shingle, repairing a metal roof may not be as simple. Matching panels, coatings, fasteners, and flashing can sometimes be difficult, particularly with older systems. When it comes to temporary solutions, it is often necessary to have professional repairs to avoid future issues as a result of the temporary fix.
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Metal Roofing Can Exhibit Oil Canning
Oil canning is the waviness or distortion that can be seen on flat metal panels. It is typically cosmetic as opposed to structural in nature and can impact the roof’s appearance. Oil canning can be minimized by using the proper material, designing the panels, and, in the installation process, securing fastening.
Conclusion
While metal roofs are extremely durable, weather-tight, and economical, they are not without problems. The most common drawback they have is ultimately improper installation that can cause leaking, moving, corrosion, and early damage. Other concerns are upfront costs, dents, noise, and cosmetic problems like oil canning. When selecting a roofing materials company and a skilled roofing company, you can avoid many of these issues. If installed properly and well maintained, a metal roof can serve for decades.
FAQs
What are the downfalls of metal roofing?
The drawback is the higher installation costs than in comparison to conventional asphalt shingles.
Are metal roofs leaky?
Yes, particularly if flashing, seams, and fasteners are not installed correctly.
Are there any routine maintenance that should be performed on metal roofs throughout their life?
Simple tests and upkeep can detect damage early, before a serious issue arises.
Is it possible for severe hail to damage metal roofs easily?
Some metal panels may be dented by large hail, depending on the thickness of the panel.
How long can a properly installed metal roof last?
The typical life span of a quality metal roof is 40-70 years.