{"id":4910,"date":"2026-09-07T13:55:25","date_gmt":"2026-09-07T17:55:25","guid":{"rendered":"https:\/\/metalroofcanada.ca\/?p=4910"},"modified":"2026-10-26T13:57:31","modified_gmt":"2026-10-26T17:57:31","slug":"metal-roof-repair-problems-solutions","status":"publish","type":"post","link":"https:\/\/metalroofcanada.ca\/en\/metal-roof-repair-problems-solutions\/","title":{"rendered":"Metal roof repair: when to repair rather than replace?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4910\" class=\"elementor elementor-4910\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7e3c376 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"7e3c376\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-7141556 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"7141556\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1289f0 elementor-widget elementor-widget-text-editor\" data-id=\"b1289f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Metal roof repair is rarely as complex as people think. In the vast majority of cases, the metal itself isn\u2019t the problem. Rather, it\u2019s the seams, screws and flashing that fail first. A targeted intervention at the right time can therefore extend the life of your roof by several decades without redoing everything.<\/span><\/p><p><span style=\"font-weight: 400;\">In this article, we identify the most common problems on a metal roof. We also explain how to recognize them, when to handle them yourself and when to call a professional.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92c9697 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"92c9697\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3045d4 elementor-widget elementor-widget-heading\" data-id=\"a3045d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The most common problems\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9f43df elementor-widget elementor-widget-text-editor\" data-id=\"d9f43df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A properly installed metal roof can last 50 years or more. However, some components wear out faster than the panels themselves. By knowing them, you can step in early and avoid costly damage.<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Failing flashing:<\/b><span style=\"font-weight: 400;\"> it\u2019s responsible for about 90% of leaks on a metal roof. Indeed, the caulking that seals the joints cracks over time due to temperature variations.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Loose or corroded screws:<\/b><span style=\"font-weight: 400;\"> the metal\u2019s contraction and expansion cycles gradually loosen the fasteners. In addition, the sealing washer under the screw can also deteriorate.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Localized corrosion:<\/b><span style=\"font-weight: 400;\"> a scratch, an impact or contact with an incompatible metal creates a rust spot. If it isn\u2019t treated quickly, the corrosion then spreads under the finish coat.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Worn lap seams:<\/b><span style=\"font-weight: 400;\"> where two panels overlap, the sealant can lose its adhesion. As a result, water seeps in during heavy rain or snowmelt.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Dents and deformations:<\/b><span style=\"font-weight: 400;\"> hail, falling branches or improper snow removal can damage the panel surface.<\/span><\/li><\/ul><p>\u00a0<\/p><p><span style=\"font-weight: 400;\">In most of these situations, a targeted repair is enough. Thus, a complete replacement is only necessary when corrosion affects more than 30% of the surface.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-61ed31c e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"61ed31c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ab22e7 elementor-widget elementor-widget-heading\" data-id=\"3ab22e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to detect a problem before it gets worse\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0510607 elementor-widget elementor-widget-text-editor\" data-id=\"0510607\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Metal roof repair always starts with a good inspection. The earlier you detect a problem, the less it will cost to fix. Some signs are visible from the ground, while others require a closer look.<\/span><\/p><p><span style=\"font-weight: 400;\">From the outside, look for rust spots on the panels or around the fasteners. Also check whether any flashing seems loose or whether screws are sticking out of the surface. After a hailstorm, also inspect the roof for dents or scratches.<\/span><\/p><p><span style=\"font-weight: 400;\">From the inside, keep an eye on the ceilings and walls of the upper floors. Indeed, brownish stains or water rings signal an active leak. A damp smell in the attic also deserves your attention. In addition, damp or mouldy insulation in the attic indicates that water has been getting through your roof for some time.<\/span><\/p><p><span style=\"font-weight: 400;\">So schedule a visual inspection in spring after the snow melts and in fall before the first frosts. In fact, this schedule matches the seasonal maintenance recommendations for maximizing your roof\u2019s longevity.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-053ab61 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"053ab61\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7a90fc7 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"7a90fc7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c9d5a74 elementor-widget elementor-widget-heading\" data-id=\"c9d5a74\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Repair it yourself or call a professional?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2dc8d0 elementor-widget elementor-widget-text-editor\" data-id=\"c2dc8d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Some minor repairs are within reach of a handy homeowner. Others, however, require the intervention of a qualified roofer. Knowing the difference will therefore save you costly mistakes.<\/span><\/p><p><span style=\"font-weight: 400;\">You can generally handle gutter cleaning, removing debris that has built up on the panels and applying a rust treatment to a small surface spot yourself. In short, these simple tasks don\u2019t require any particular expertise.<\/span><\/p><p><span style=\"font-weight: 400;\">On the other hand, leave any work that affects your roof\u2019s watertightness to a professional. Indeed, replacing flashing, tightening screws to the right torque and repairing a perforated panel require specific know-how. Overtightening crushes the sealing washer and then creates a new leak point. Likewise, poorly installed flashing causes more damage than it prevents.<\/span><\/p><p><span style=\"font-weight: 400;\">Furthermore, climbing onto a metal roof carries a risk of slipping. The smooth metal surface becomes particularly dangerous when wet. You should therefore leave this work to roofers who are equipped and insured for this type of job.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69699b6 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"69699b6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"960\" height=\"640\" src=\"https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-1024x683.png\" class=\"attachment-large size-large wp-image-4620\" alt=\"Ouvrier appliquant du scellant sur un joint de toiture \u00e0 joints debout pour une r\u00e9paration toit en m\u00e9tal.\" srcset=\"https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-1024x683.png 1024w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-300x200.png 300w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-768x512.png 768w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-1536x1024.png 1536w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-2048x1365.png 2048w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-18x12.png 18w, https:\/\/metalroofcanada.ca\/wp-content\/uploads\/2026\/07\/Reparation-toit-en-metal-in-text-600x400.png 600w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-24ca024 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"24ca024\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-533c660 elementor-widget elementor-widget-heading\" data-id=\"533c660\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Flashing repairs: the most common case\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0af3071 elementor-widget elementor-widget-text-editor\" data-id=\"0af3071\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/metalroofcanada.ca\/en\/roof-flashing\/\"><span style=\"font-weight: 400;\">Flashing<\/span><\/a><span style=\"font-weight: 400;\"> deserves a section of its own, because it\u2019s the most common source of leaks on a metal roof. These metal pieces protect the vulnerable joints around chimneys, vents, skylights and adjacent walls.<\/span><\/p><p><span style=\"font-weight: 400;\">The caulking that seals the flashing is under constant stress. In summer, it expands. In winter, it contracts and hardens. After a few years, cracks appear and water finds its way in. In Quebec, freeze-thaw cycles speed up this process even further.<\/span><\/p><p><span style=\"font-weight: 400;\">The repair consists of removing the old sealant, thoroughly cleaning the surface and applying a new sealant that\u2019s compatible with your type of metal. This compatibility is essential. Indeed, an unsuitable product can cause a chemical reaction that speeds up corrosion rather than preventing it.<\/span><\/p><p><span style=\"font-weight: 400;\">A specialized roofer like those at<\/span><a href=\"https:\/\/metalroofcanada.ca\/en\/about-2\/\"> <span style=\"font-weight: 400;\">Metal Roof Canada<\/span><\/a><span style=\"font-weight: 400;\"> knows which product to use in each situation. They also check the condition of the flashing itself. If the metal is perforated or too corroded, a simple reseal won\u2019t be enough. The entire piece will then have to be replaced.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5560b14 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"5560b14\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-628402f elementor-widget elementor-widget-heading\" data-id=\"628402f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The cost of a repair versus a replacement\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22edd45 elementor-widget elementor-widget-text-editor\" data-id=\"22edd45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Metal roof repair costs a fraction of the price of a full replacement. In fact, this is one of its great advantages. Acting early on a localized problem thus saves you a much steeper bill.<\/span><\/p><p><span style=\"font-weight: 400;\">Resealing flashing generally costs between $200 and $600. In addition, replacing a few corroded screws with new washers costs around $150 to $400. Finally, treating an area of localized corrosion ranges from $300 to $800 depending on its extent.<\/span><\/p><p><span style=\"font-weight: 400;\">By comparison, a complete metal roof replacement costs between $15,000 and $36,000 for an average home. The gap is considerable. That\u2019s why preventive maintenance and prompt repairs are the best financial strategy.<\/span><\/p><p><span style=\"font-weight: 400;\">However, when corrosion affects more than 30% of the surface, repeated repairs end up costing more than a replacement. An honest roofer will be able to tell you whether your roof is still worth repairing or whether it\u2019s time for a new roof covering.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fac8974 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"fac8974\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61555ae elementor-widget elementor-widget-heading\" data-id=\"61555ae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Protecting your warranty during repairs\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab17287 elementor-widget elementor-widget-text-editor\" data-id=\"ab17287\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A poorly executed metal roof repair can void your warranty. Many homeowners learn this the hard way after hiring an unqualified contractor or attempting a DIY repair.<\/span><\/p><p><span style=\"font-weight: 400;\">Most manufacturer warranties require repairs to be carried out according to the manufacturer\u2019s specifications. Using an unapproved caulking product or drilling into a panel without following the standards can be enough to void your coverage. The same applies if an uncertified roofer works on your roof.<\/span><\/p><p><span style=\"font-weight: 400;\">Before any repair, therefore, check your warranty conditions. Contact your original installer whenever possible. If that\u2019s no longer an option, choose a roofer who knows your type of roof and the manufacturer\u2019s requirements. Also, keep the invoices and photos of every job. These documents prove that the repairs were done properly.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-633dffd e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"633dffd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4358e7f elementor-widget elementor-widget-heading\" data-id=\"4358e7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Prevention is better than repair\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eea84e7 elementor-widget elementor-widget-text-editor\" data-id=\"eea84e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The best way to reduce repairs is to prevent them. A few simple habits are enough to keep your roof in excellent condition for decades.<\/span><\/p><p><span style=\"font-weight: 400;\">Clean your gutters twice a year to prevent water from backing up. Remove the branches and debris that build up on the panels, especially in valleys and corners. Check the condition of the flashing at every change of season.<\/span><\/p><p><span style=\"font-weight: 400;\">Also, make sure your attic<\/span><a href=\"https:\/\/metalroofcanada.ca\/en\/energy-efficient-roof\/\"> <span style=\"font-weight: 400;\">ventilation<\/span><\/a><span style=\"font-weight: 400;\"> is working properly. Condensation remains metal\u2019s silent enemy. Indeed, it corrodes the panels from the inside without you seeing anything from the outside. According to the<\/span><a href=\"https:\/\/www.rbq.gouv.qc.ca\/en\/you-are\/citizen\/renovation-work\/construction-and-renovation-standards\/\"> <span style=\"font-weight: 400;\">R\u00e9gie du b\u00e2timent du Qu\u00e9bec<\/span><\/a><span style=\"font-weight: 400;\">, ventilation that meets standards protects the structure as much as the roof covering.<\/span><\/p><p><span style=\"font-weight: 400;\">Finally, schedule a professional inspection every 3 to 5 years. An experienced roofer can spot problems before they become visible. This preventive visit costs a few hundred dollars and can save you thousands.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a9f0c42 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"a9f0c42\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a7ff7a elementor-widget elementor-widget-heading\" data-id=\"2a7ff7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4b04cf elementor-widget elementor-widget-text-editor\" data-id=\"e4b04cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Metal roof repair is almost always more economical than a replacement. Flashing, screws and seams wear out well before the panels themselves. Acting quickly on these weak points therefore extends the life of your roof by several decades.<\/span><\/p><p><span style=\"font-weight: 400;\">Watch for signs of wear, follow a minimal maintenance schedule and call a specialist for any work that affects watertightness. These simple steps protect your investment and your warranty.<\/span><\/p><p><span style=\"font-weight: 400;\">Have you spotted a problem on your metal roof?<\/span><a href=\"https:\/\/metalroofcanada.ca\/en\/contact-us-2\/\"> <span style=\"font-weight: 400;\">Contact Metal Roof Canada<\/span><\/a><span style=\"font-weight: 400;\"> for a quick assessment and long-lasting solutions.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Metal roof repair is rarely as complex as people think. In the vast majority of cases, the metal itself isn\u2019t the problem. Rather, it\u2019s the seams, screws and flashing that fail first. A targeted intervention at the right time can therefore extend the life of your roof by several decades without redoing everything. In this article, we identify the most common problems on a metal roof. We also explain how to recognize them, when to handle them yourself and when to call a professional. The most common problems A properly installed metal roof can last 50 years or more. However, some components wear out faster than the panels themselves. By knowing them, you can step in early and avoid costly damage. Failing flashing: it\u2019s responsible for about 90% of leaks on a metal roof. Indeed, the caulking that seals the joints cracks over time due to temperature variations. Loose or corroded screws: the metal\u2019s contraction and expansion cycles gradually loosen the fasteners. In addition, the sealing washer under the screw can also deteriorate. Localized corrosion: a scratch, an impact or contact with an incompatible metal creates a rust spot. If it isn\u2019t treated quickly, the corrosion then spreads under the finish coat. Worn lap seams: where two panels overlap, the sealant can lose its adhesion. As a result, water seeps in during heavy rain or snowmelt. Dents and deformations: hail, falling branches or improper snow removal can damage the panel surface. \u00a0 In most of these situations, a targeted repair is enough. Thus, a complete replacement is only necessary when corrosion affects more than 30% of the surface. How to detect a problem before it gets worse Metal roof repair always starts with a good inspection. The earlier you detect a problem, the less it will cost to fix. Some signs are visible from the ground, while others require a closer look. From the outside, look for rust spots on the panels or around the fasteners. Also check whether any flashing seems loose or whether screws are sticking out of the surface. After a hailstorm, also inspect the roof for dents or scratches. From the inside, keep an eye on the ceilings and walls of the upper floors. Indeed, brownish stains or water rings signal an active leak. A damp smell in the attic also deserves your attention. In addition, damp or mouldy insulation in the attic indicates that water has been getting through your roof for some time. So schedule a visual inspection in spring after the snow melts and in fall before the first frosts. In fact, this schedule matches the seasonal maintenance recommendations for maximizing your roof\u2019s longevity. Repair it yourself or call a professional? Some minor repairs are within reach of a handy homeowner. Others, however, require the intervention of a qualified roofer. Knowing the difference will therefore save you costly mistakes. You can generally handle gutter cleaning, removing debris that has built up on the panels and applying a rust treatment to a small surface spot yourself. In short, these simple tasks don\u2019t require any particular expertise. On the other hand, leave any work that affects your roof\u2019s watertightness to a professional. Indeed, replacing flashing, tightening screws to the right torque and repairing a perforated panel require specific know-how. Overtightening crushes the sealing washer and then creates a new leak point. Likewise, poorly installed flashing causes more damage than it prevents. Furthermore, climbing onto a metal roof carries a risk of slipping. The smooth metal surface becomes particularly dangerous when wet. You should therefore leave this work to roofers who are equipped and insured for this type of job. Flashing repairs: the most common case Flashing deserves a section of its own, because it\u2019s the most common source of leaks on a metal roof. These metal pieces protect the vulnerable joints around chimneys, vents, skylights and adjacent walls. The caulking that seals the flashing is under constant stress. In summer, it expands. In winter, it contracts and hardens. After a few years, cracks appear and water finds its way in. In Quebec, freeze-thaw cycles speed up this process even further. The repair consists of removing the old sealant, thoroughly cleaning the surface and applying a new sealant that\u2019s compatible with your type of metal. This compatibility is essential. Indeed, an unsuitable product can cause a chemical reaction that speeds up corrosion rather than preventing it. A specialized roofer like those at Metal Roof Canada knows which product to use in each situation. They also check the condition of the flashing itself. If the metal is perforated or too corroded, a simple reseal won\u2019t be enough. The entire piece will then have to be replaced. The cost of a repair versus a replacement Metal roof repair costs a fraction of the price of a full replacement. In fact, this is one of its great advantages. Acting early on a localized problem thus saves you a much steeper bill. Resealing flashing generally costs between $200 and $600. In addition, replacing a few corroded screws with new washers costs around $150 to $400. Finally, treating an area of localized corrosion ranges from $300 to $800 depending on its extent. By comparison, a complete metal roof replacement costs between $15,000 and $36,000 for an average home. The gap is considerable. That\u2019s why preventive maintenance and prompt repairs are the best financial strategy. However, when corrosion affects more than 30% of the surface, repeated repairs end up costing more than a replacement. An honest roofer will be able to tell you whether your roof is still worth repairing or whether it\u2019s time for a new roof covering. Protecting your warranty during repairs A poorly executed metal roof repair can void your warranty. Many homeowners learn this the hard way after hiring an unqualified contractor or attempting a DIY repair. Most manufacturer warranties require repairs to be carried out according to the manufacturer\u2019s specifications. Using an unapproved caulking product or drilling into a panel without following the standards can be<\/p>","protected":false},"author":1,"featured_media":4619,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[87],"tags":[],"class_list":["post-4910","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe-fr-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metal roof repair: common problems and solutions<\/title>\n<meta name=\"description\" content=\"Metal roof repair costs far less than a full replacement. Common problems, solutions and when to act. 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