{"id":2557,"date":"2026-06-11T14:23:52","date_gmt":"2026-06-11T11:23:52","guid":{"rendered":"https:\/\/kotekservice.com\/uncategorized\/long-term-repair-of-industrial-felt-and-tin-roofs-with-polyurethane-coating\/"},"modified":"2026-06-11T14:23:52","modified_gmt":"2026-06-11T11:23:52","slug":"long-term-repair-of-industrial-felt-and-tin-roofs-with-polyurethane-coating","status":"publish","type":"post","link":"https:\/\/kotekservice.com\/en\/uncategorized\/long-term-repair-of-industrial-felt-and-tin-roofs-with-polyurethane-coating\/","title":{"rendered":"Long-term repair of industrial felt and tin roofs with polyurethane coating"},"content":{"rendered":"<div style=\"max-width: 1200px; margin: 0 auto; padding: 80px 20px; font-family: 'Sarabun', sans-serif;\">\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">The maintenance of waterproof roofs in industrial buildings is essential to ensure the smooth operation of production facilities and warehouses. Large felt and tin roofs in particular are exposed to constantly changing weather conditions, large temperature differences and mechanical and chemical stress. Traditional repair methods, such as partial replacement of the roof sheathing or welding of sheets, often offer only temporary relief. They may also require production stoppages for the duration of the installation work.   <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 30px;\">Long-lasting and seamless <strong><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/kotekservice.com\/en\/services\/polyurethane-coatings\/\">polyurea coating<\/a><\/span><\/strong> offers an effective solution for the restoration of large industrial roof surfaces without costly demolition work. The method protects and seals the existing roofing, extending its lifetime by decades. <\/p>\n<h2 style=\"font-size: 32px; font-weight: 600; color: #000000; margin-bottom: 24px; border-left: 5px solid #EDDF26; padding-left: 20px;\">Why are leaks in the roof of an industrial building a serious threat to business?<\/h2>\n<p><\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">A roof leak in an industrial warehouse or production plant not only causes damage to the building, but also poses an immediate risk to the continuity of the business. If moisture penetrates the waterproofing, the damage can spread rapidly and cause major financial losses. <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">The most typical risks are:<\/p>\n<ul style=\"margin-bottom: 30px; padding-left: 20px; list-style-type: none;\">\n<li style=\"margin-bottom: 12px; position: relative; padding-left: 20px; font-size: 16px; line-height: 1.6; color: #1d1d1f;\"><span style=\"position: absolute; left: 0; color: #eddf26;\">\u25a0<\/span> <strong>Electrical equipment and machinery damage:<\/strong> machinery and equipment in industrial buildings are sensitive to moisture. Water can damage automated production lines, electrical switchboards and stored raw materials or finished products. <\/li>\n<li style=\"margin-bottom: 12px; position: relative; padding-left: 20px; font-size: 16px; line-height: 1.6; color: #1d1d1f;\"><span style=\"position: absolute; left: 0; color: #eddf26;\">\u25a0<\/span> <strong>Production stoppages:<\/strong> leaks detected in sensitive areas often force production to be halted for safety reasons or while repairs are carried out. Shutdown days result in direct losses of turnover, which are difficult to make up for afterwards. <\/li>\n<li style=\"margin-bottom: 12px; position: relative; padding-left: 20px; font-size: 16px; line-height: 1.6; color: #1d1d1f;\"><span style=\"position: absolute; left: 0; color: #eddf26;\">\u25a0<\/span> <strong>Structural damage:<\/strong> prolonged exposure to moisture weakens load-bearing concrete slabs or steel structures. This requires heavy and expensive structural repairs later on. <\/li>\n<\/ul>\n<h2 style=\"font-size: 32px; font-weight: 600; color: #000000; margin-bottom: 24px; border-left: 5px solid #EDDF26; padding-left: 20px;\">Polyurethane coating as a repair method for felt and tin roofs<\/h2>\n<p><\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">Industrial waterproofing is about finding solutions that will last for decades without disturbing the activities below. Developed for this purpose, the <a style=\"color: #000000; font-weight: 600; text-decoration: underline;\" href=\"https:\/\/kotekservice.com\/en\/services\/polyurethane-coatings\/\">polyurethane waterproofing coating<\/a> is a liquid sprayable elastomeric coating that forms a completely seamless and elastic film over an old felt or tin roof. The method always requires a thoroughly cleaned and dry installation surface to ensure the best possible adhesion.  <\/p>\n<div style=\"background: #32373C; color: #ffffff; padding: 25px; border-left: 5px solid #EDDF26; border-radius: 5px; margin: 30px 0;\">\n<h4 style=\"margin: 0 0 15px 0; font-size: 18px; color: #eddf26; font-family: 'Sarabun', sans-serif;\">Technical characteristics of the industrial roof<\/h4>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Tensile strengthUp to<strong>300% (resists structural movement without tearing)<\/strong><\/div>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Drying timeSeconds<strong>(touch dry up to 10 s, resistant to rain and walking after just one minute)<\/strong><\/div>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Installation methodSeamless<strong>hot spray (no weld seams or joints)<\/strong><\/div>\n<\/div>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">With over 300% elongation, the coating will flex and live with the roof from the freezing temperatures of winter to the scorching heat of summer. Tin roofs expand and contract dramatically with temperature fluctuations, which can easily tear open traditional seams and screw heads. The flexibility of polyurea coating prevents this damage and keeps joints watertight year after year.  <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">Fast drying in seconds minimises leg risks during installation. Curing to touch-dry in up to 10 seconds, the coating is resistant to water and foot traffic within minutes of application. The roof can be protected without lengthy and weather-prone work steps. Work proceeds efficiently and reliably even in variable weather conditions.   <\/p>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 30px 0;\">\n<div style=\"padding: 20px; border-bottom: 3px solid #EDDF26; background: #F8F8F8; border-radius: 5px;\">\n<h5 style=\"margin: 0 0 10px 0; color: #000000; font-size: 16px; font-weight: 600;\">Light and unencumbered<\/h5>\n<p style=\"margin: 0; font-size: 14px; color: #54595f; line-height: 1.5;\">The coating does not add much weight to the roof, unlike new layers of felt on top of each other. The solution saves the load-bearing roof structures from extra weight. <\/p>\n<\/div>\n<div style=\"padding: 20px; border-bottom: 3px solid #EDDF26; background: #F8F8F8; border-radius: 5px;\">\n<h5 style=\"margin: 0 0 10px 0; color: #000000; font-size: 16px; font-weight: 600;\">Seamless watertightness<\/h5>\n<p style=\"margin: 0; font-size: 14px; color: #54595f; line-height: 1.5;\">There are no seams or gaps in the roof where water could get through. Even complex penetrations are reliably sealed in a single pass. <\/p>\n<\/div>\n<div style=\"padding: 20px; border-bottom: 3px solid #EDDF26; background: #F8F8F8; border-radius: 5px;\">\n<h5 style=\"margin: 0 0 10px 0; color: #000000; font-size: 16px; font-weight: 600;\">Mechanical resistance<\/h5>\n<p style=\"margin: 0; font-size: 14px; color: #54595f; line-height: 1.5;\">The material is highly resistant to air pollution in industrial environments, UV radiation and foot traffic during roof maintenance.<\/p>\n<\/div>\n<\/div>\n<h2 style=\"font-size: 32px; font-weight: 600; color: #000000; margin-bottom: 24px; border-left: 5px solid #EDDF26; padding-left: 20px;\">Conditions for a successful coating: substrate preparation and installation conditions<\/h2>\n<p><\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">High-quality polyurethane coating requires accurate and professional preparation to be successful. As the material is sensitive to moisture during installation, the substrate must be completely dry and clean. Even the slightest moisture in the substrate will weaken the chemical adhesion, which can lead to bubbling or peeling of the coating later on.  <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">Before spraying, the roof is mechanically cleaned and the necessary groundwork is completed. Sheet metal roofs are stripped of flaking old paint, rust and contaminants by high-pressure washing and sanding. Felt roofing ensures that there are no soft, damaged areas or pockets of vapour underneath. Any damage is repaired locally before the coating is applied.   <\/p>\n<div style=\"margin: 20px 0;\">\n<div style=\"display: inline-flex; align-items: center; background: #F8F8F8; border: 1px solid #E1E1E1; padding: 8px 16px; border-radius: 5px; margin-right: 10px; margin-bottom: 10px;\"><span style=\"color: #eddf26; margin-right: 8px;\">\u2605<\/span> <span style=\"font-size: 13px; font-weight: 600; color: #32373c;\">REQUIRES A DRY INSTALLATION SURFACE<\/span><\/div>\n<div style=\"display: inline-flex; align-items: center; background: #F8F8F8; border: 1px solid #E1E1E1; padding: 8px 16px; border-radius: 5px; margin-right: 10px; margin-bottom: 10px;\"><span style=\"color: #eddf26; margin-right: 8px;\">\u2605<\/span> <span style=\"font-size: 13px; font-weight: 600; color: #32373c;\">TECHNICAL QUALITY CONTROL<\/span><\/div>\n<\/div>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">After priming, a primer suitable for the material is applied to the area. This seals the pores in the substrate and provides a good adhesion surface for the fast-reacting polyurea. Carefully controlled work ensures that the finished protective film forms a cohesive and dense surface with the roof, which is resistant to abrasion and climatic stresses.  <\/p>\n<h2 style=\"font-size: 32px; font-weight: 600; color: #000000; margin-bottom: 24px; border-left: 5px solid #EDDF26; padding-left: 20px;\">Life cycle analysis: avoiding demolition costs and long-term savings<\/h2>\n<p><\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">For industrial property owners and technical property managers, the choice of the method for renovating a waterproof roof is a major financial decision. A traditional roof replacement contract, where the old roof is completely demolished, represents a significant cost. The demolition work generates a lot of waste material, which is subject to high disposal fees. The demolition phase also exposes the interior of the building and production equipment to the weather, which increases the risk of moisture damage during the work.   <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">A polyurea renovation saves on demolition costs, as the old coating acts as a substrate for the new one. The method can even halve the cost of a roof renovation compared to a traditional renovation. The project is completed quickly and there is no need to interrupt production for the installation. In the long term, the method brings significant savings, as the coated roof does not require constant seam patching or costly maintenance.   <\/p>\n<div style=\"background: #32373C; color: #ffffff; padding: 25px; border-left: 5px solid #EDDF26; border-radius: 5px; margin: 30px 0;\">\n<h4 style=\"margin: 0 0 15px 0; font-size: 18px; color: #eddf26; font-family: 'Sarabun', sans-serif;\">Summary of economic and operational benefits<\/h4>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Demolition costs0<strong>\u20ac (old roof will not be demolished or destroyed)<\/strong><\/div>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Impact on productionNo<strong>disturbance (work will be carried out outside the property)<\/strong><\/div>\n<div style=\"display: flex; justify-content: space-between; border-bottom: 1px solid #454B52; padding: 8px 0; font-size: 15px;\">Life extensionMaximum<strong>25 years with one treatment<\/strong><\/div>\n<\/div>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">The light coating will not put any load on existing roof structures. Welding new felt layers on top of old felt may require expensive structural reinforcement to ensure load-bearing capacity. Polyurea&#8217;s low self-weight also allows safe renovation in older properties with tight load-bearing constraints on roof structures.  <\/p>\n<h2 style=\"font-size: 32px; font-weight: 600; color: #000000; margin-bottom: 24px; border-left: 5px solid #EDDF26; padding-left: 20px;\">Proactive waterproofing preserves the value of an industrial building<\/h2>\n<p><\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 20px;\">Timely repair of a waterproof roof saves money in the long run by avoiding major damage and extending the life of the roof. By tackling leaks before they reach the load-bearing structures or insulation, costly repairs can be avoided. A seamless and elastic coating provides a secure barrier against moisture and keeps the building dry in harsh weather conditions.  <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 30px;\">Designers, property managers and developers should remember that the quality of the coating work depends on the efficiency of the equipment and the professionalism of the installers. Careful planning, the right installation conditions and close supervision will ensure that the coated roof surface will protect the building and its function for decades to come. <\/p>\n<div style=\"background: #ffffff; border: 1px solid #E1E1E1; border-radius: 5px; padding: 40px; box-shadow: 2px 2px 15px rgba(0,0,0,0.05); margin-top: 50px;\">\n<h3 style=\"font-size: 24px; font-weight: 600; color: #000000; margin-bottom: 15px; font-family: 'Sarabun', sans-serif;\">Want to ensure the longevity of your industrial property roof?<\/h3>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 25px;\">Kotek Factory Service Oy is a specialist in industrial surface treatments and waterproofing. We have more than 30 years of experience in demanding industrial surface treatments and are the leading contractor for sprayable waterproofing in Finland. We carry out demanding polyurethane coatings for industrial roofs nationwide. We take care of the entire process, from technical assessment and groundwork to a carefully finished end result.   <\/p>\n<p style=\"font-size: 16px; line-height: 1.6; color: #1d1d1f; margin-bottom: 30px;\">As a reliable and RALA-certified partner, we guarantee that the agreed project schedules are met and the work is completed without any disruption to production. Contact our experts and we will assess your roof situation and design a sustainable coating solution for your project. <\/p>\n<p><a style=\"display: inline-block; background-color: #32373c; color: #ffffff; padding: 15px 30px; border-radius: 5px; text-decoration: none; font-weight: 600; text-transform: uppercase; font-size: 14px; border: 2px solid #32373C; transition: 0.3s;\" href=\"https:\/\/kotekservice.com\/en\/contact\/\">  Request an evaluation and a quote  <\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The maintenance of waterproof roofs in industrial buildings is essential to ensure the smooth operation of production facilities and warehouses. Large felt and tin roofs in particular are exposed to constantly changing weather conditions, large temperature differences and mechanical and chemical stress. Traditional repair methods, such as partial replacement of the roof sheathing or welding [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts\/2557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/comments?post=2557"}],"version-history":[{"count":0,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts\/2557\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/media\/1438"}],"wp:attachment":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/media?parent=2557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/categories?post=2557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/tags?post=2557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}