{"id":4767,"date":"2026-03-09T10:41:53","date_gmt":"2026-03-09T14:41:53","guid":{"rendered":"https:\/\/metalroofcanada.ca\/?p=4767"},"modified":"2026-10-26T10:44:24","modified_gmt":"2026-10-26T14:44:24","slug":"roofing-myths","status":"publish","type":"post","link":"https:\/\/metalroofcanada.ca\/en\/roofing-myths\/","title":{"rendered":"The 5 most common roofing myths"},"content":{"rendered":"
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Roofing myths have been circulating among Canadian homeowners for a long time. Some seem logical at first glance. Others are passed down from generation to generation. However, believing these misconceptions can lead to bad decisions. Worse still, it can cost you a lot in repairs.<\/span><\/p>

This article debunks the 5 most common roofing myths. That way, you\u2019ll know what to believe, what to avoid and how to protect your investment.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Myth 1: a new roof can be installed over the old one\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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This is one of the most widespread roofing myths. Many people think you can simply lay a new layer over the old one. On the surface, it seems cheap and fast. However, this practice hides serious problems.<\/span><\/p>

First, the extra weight can weaken your home\u2019s structure. Next, hidden damage under the old roof goes undetected. As a result, moisture and rot problems keep getting worse. The right practice is therefore to completely remove the old roof before installing a new one. This ensures a sound, long-lasting installation.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Myth 2: a metal roof is noisy in the rain\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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This is a persistent myth. Many people imagine that rain on a metal roof makes an unbearable noise. In reality, that\u2019s false. A properly installed metal roof with adequate insulation is just as quiet as a shingle roof. In fact, the insulation and the underlayment effectively absorb the noise.<\/span><\/p>

In addition, residential metal roofs are installed on a solid structure. This considerably dampens the sound. Consequently, you won\u2019t hear the rain any more than with any other material. This myth therefore shouldn\u2019t influence your decision.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Myth 3: a metal roof attracts lightning\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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This myth is probably the most common. Many people fear that a metal roof is more likely to be struck by lightning. In reality, lightning strikes the highest point in an area, regardless of the material. Metal doesn\u2019t attract lightning any more than wood or concrete does.<\/span><\/p>

Moreover, metal is an excellent conductor. If lightning strikes, the energy dissipates quickly and evenly. Unlike wood, metal doesn\u2019t catch fire. As a result, a metal roof is actually safer in the event of a lightning strike. To learn more about building safety, visit the <\/span>Canada Mortgage and Housing Corporation<\/span><\/a> (CMHC) website.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Myth 4: all roofs are the same<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Among the most harmful roofing myths, this one is particularly dangerous. Many homeowners choose their roof based on price alone. However, not all materials perform the same way. This is especially true in the Canadian climate.<\/span><\/p>

Asphalt shingles, for example, deteriorate faster when exposed to freeze-thaw cycles. A metal roof, on the other hand, stands up much better to these conditions. In addition, the quality of the installation makes a huge difference. A poor installer can compromise even the best material. It\u2019s therefore essential to choose a certified, experienced contractor.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Myth 5: a roof only needs maintenance when it leaks\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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This is a very costly mistake. Waiting for a leak to appear before taking action means waiting too long. Indeed, a leak that\u2019s visible inside means the damage is already significant. Water has often infiltrated the structure long before it\u2019s detected.<\/span><\/p>

Here\u2019s why regular preventive maintenance is essential:<\/span><\/p>