{"id":15789,"date":"2024-09-23T09:34:31","date_gmt":"2024-09-23T06:04:31","guid":{"rendered":"https:\/\/imenpol.com\/blog\/en\/?p=15789"},"modified":"2025-09-16T11:44:48","modified_gmt":"2025-09-16T08:14:48","slug":"troubleshooting-polyurethane-spray-foam","status":"publish","type":"post","link":"https:\/\/imenpol.com\/blog\/en\/educational\/troubleshooting-polyurethane-spray-foam\/","title":{"rendered":"Troubleshooting polyurethane spray foam"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"15789\" class=\"elementor elementor-15789\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61edf14 e-flex e-con-boxed e-con e-parent\" data-id=\"61edf14\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7191e04 content-table elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"7191e04\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;container&quot;:&quot;.table-contents&quot;,&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h6 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of contents\t\t\t<\/h6>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__7191e04\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__7191e04\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__7191e04\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\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<div class=\"elementor-element elementor-element-62d24ad  table-contents e-flex e-con-boxed e-con e-parent\" data-id=\"62d24ad\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a6889dc elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"a6889dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tWith the numerous advantageous properties of <a title=\"polyurethane\" href=\"\/en\/polyurethane\/\" target=\"_blank\" rel=\"noopener\">polyurethane<\/a> foam, its applications are increasing day by day. When it comes to home insulation, this foam receives a lot of attention. It is a durable and airtight insulation material, which will protect buildings against heat loss for many years. However, can spray foam be applied to any surface? This article will discuss the topic.\n<h2><strong>Adhesion properties of polyurethane foam and how to measure it<\/strong><\/h2>\nIn fact, polyurethane foam was discovered during research on a type of glue; therefore, it generally has good adhesion to various surfaces. Once applied to a surface, the foam adheres to it. However, there are factors that can alter the foam&#8217;s adhesion properties and reduce it, such as temperature, surface preparation (presence of contamination, instability, etc.), and the degree of porosity of the substrate.\n\nTo determine the adhesion properties, the foam is applied to a part of the substrate&#8217;s surface, and after the curing process is complete, it is pulled off the surface. The foam should break before detaching from the substrate surface.\n\nAccording to the standard EN 14315-1, the adhesion strength of polyurethane or <a title=\"polyisocyanurate\" href=\"\/en\/product\/isocyanate\/\" target=\"_blank\" rel=\"noopener\">polyisocyanurate<\/a> foam to the substrate surface is evaluated perpendicular to the applied forces. This process is carried out according to Annex F. The bond strength should not be less than 20 kPa and can be categorized into three levels based on its value:\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<div class=\"elementor-element elementor-element-e19b83f e-flex e-con-boxed e-con e-parent\" data-id=\"e19b83f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56aaed6 elementor-widget elementor-widget-image\" data-id=\"56aaed6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"624\" height=\"190\" src=\"https:\/\/imenpol.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/adhesion-strength-of-polyurethane-foams.png\" class=\"attachment-full size-full wp-image-15793\" alt=\"\" srcset=\"https:\/\/imenpol.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/adhesion-strength-of-polyurethane-foams.png 624w, https:\/\/imenpol.com\/blog\/en\/wp-content\/uploads\/sites\/2\/2024\/09\/adhesion-strength-of-polyurethane-foams-300x91.png 300w\" sizes=\"(max-width: 624px) 100vw, 624px\" \/>\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\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-998c302  table-contents e-flex e-con-boxed e-con e-parent\" data-id=\"998c302\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f99565b elementor-widget elementor-widget-text-editor\" data-id=\"f99565b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>It should be noted that the smaller the size of the sample under investigation, the greater the number of test repetitions until the results are reported. According to this standard, the tensile cohesion strength inside the foam structure is also determined.<\/p><p>In addition, in this test, the thickness of the sprayed foam should not be less than 30 millimeters. Also, the temperature should be within the range of 20 \u00b1 2 degrees Celsius, the relative humidity should be 50 \u00b1 5 percent, and the foam should be allowed to cure for a minimum of 24 hours.<\/p><p>On the other hand, one of the advantages of <a title=\"polyurethane spray foam\" href=\"\/en\/product\/spray-insulation-sound\/\" target=\"_blank\" rel=\"noopener\">polyurethane spray foam<\/a> is its ability to increase the strength of structures. After application, the foam expands and hardens in the air. To achieve this (enhancing structural integrity), the foam must have suitable adhesion to the substrate surface.<\/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<div class=\"elementor-element elementor-element-636d03f section pd-0 pb-0 pt-0 e-flex e-con-boxed e-con e-parent\" data-id=\"636d03f\" 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-a90a597 e-con-full minimal-cta e-flex e-con e-child\" data-id=\"a90a597\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-8705949 e-con-full e-flex e-con e-child\" data-id=\"8705949\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4220a0d section-subtitle elementor-widget__width-inherit elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"4220a0d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">After sales service<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3769e3e section-title elementor-widget__width-inherit elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"3769e3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:400}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">For price inquiries and purchasing liquid polyurethane for polyurethane foam production, please contact Imen Polymer Chemie Company.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad07afb elementor-widget__width-initial elementor-absolute elementor-widget elementor-widget-image\" data-id=\"ad07afb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/imenpol.hinzaco.com\/wp-content\/uploads\/2024\/03\/hexagon-cta.svg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d7a85a e-con-full button-minimal-cta e-flex e-con e-child\" data-id=\"4d7a85a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aa77d49 button elementor-widget elementor-widget-button\" data-id=\"aa77d49\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/en\/contact\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send massage<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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-4c3ef78 button elementor-widget elementor-widget-button\" data-id=\"4c3ef78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"tel:%20+982157325\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Call Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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<div class=\"elementor-element elementor-element-1ae95e2  table-contents e-flex e-con-boxed e-con e-parent\" data-id=\"1ae95e2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1a02d12 elementor-widget elementor-widget-text-editor\" data-id=\"1a02d12\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>Improving polyurethane foam adhesion <\/strong><\/h2><p>To create a suitable bonding between foam and substrate, surfaces must be clean, dry, and free of dust and grease. This adhesion can also be increased according to the need, both physically, by scratching the surface, and chemically, by using a primer. If the substrate surface is metallic, there should be no signs of rust.<\/p><p>Generally, there are several methods to improve this property, including:<\/p><ul><li>Applying foam on a stable substrate because polyurethane has good adhesion to the primary bonding layer, but if this layer separates easily, the foam will also detach.<\/li><li>For metal surfaces such as steel, aluminum, etc., the substrate surface must be free of grease, and before applying foam, it should be cleaned using a cleaning agent such as alcohol, and then a non-porous primer should be applied.<\/li><li>For concrete surfaces, the surface must be thoroughly cleaned using a wire brush.<\/li><li>For some polymer materials such as polyethylene film, the surface can be heated with a flame to improve adhesion with foam, but for materials like polypropylene or Teflon, good adhesion can never be achieved.<\/li><li>When applied on wet surfaces or surfaces with dew, separation will occur with the application of polyurethane foam. The less porous the surface is, the more severe the problem will be. As a general rule, the moisture content of the substrate surface should be less than 20%. If the moisture content is higher than this, the foam will not adhere well.<\/li><li>For unprotected asphalt surfaces, it is recommended to remove the polyethylene layer that causes non-adhesion using flame.<\/li><\/ul>\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<div class=\"elementor-element elementor-element-98bb6f9 section related-products e-con-full e-flex e-con e-parent\" data-id=\"98bb6f9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3256a6 section-subtitle elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"b3256a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Some of<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbedcda section-title elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"fbedcda\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;_animation_delay&quot;:500}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Polyurethane Products<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cbe9f50 e-con-full e-flex e-con e-child\" data-id=\"cbe9f50\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7717508 elementor-widget__width-initial related-product elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"7717508\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/product\/spray-insulation-heat\/\" target=\"_blank\" tabindex=\"-1\"><img decoding=\"async\" src=\"https:\/\/imenpol.com\/blog\/wp-content\/uploads\/2024\/03\/\u0641\u0648\u0645-\u0639\u0627\u06cc\u0642-\u062d\u0631\u0627\u0631\u062a-1.jpg\" title=\"\" alt=\"\u0641\u0648\u0645 \u0639\u0627\u06cc\u0642 \u062d\u0631\u0627\u0631\u062a\" loading=\"lazy\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><div class=\"elementor-image-box-title\"><a href=\"\/en\/product\/spray-insulation-heat\/\" target=\"_blank\">Heat insulation spray<\/a><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5df7adc elementor-widget__width-initial related-product elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"5df7adc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/product\/spray-insulation-sound\/\" target=\"_blank\" tabindex=\"-1\"><img decoding=\"async\" src=\"https:\/\/imenpol.com\/blog\/wp-content\/uploads\/2024\/03\/\u0641\u0648\u0645-\u0639\u0627\u06cc\u0642-\u0635\u0648\u062a-.jpg\" title=\"\" alt=\"\u0627\u0633\u067e\u0631\u06cc \u0641\u0648\u0645 \u067e\u0644\u06cc \u06cc\u0648\u0631\u062a\u0627\u0646 \u0639\u0627\u06cc\u0642 \u0635\u0648\u062a\u06cc\" loading=\"lazy\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><div class=\"elementor-image-box-title\"><a href=\"\/en\/product\/spray-insulation-sound\/\" target=\"_blank\">Sound insulation spray<\/a><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9cbaf16 elementor-widget__width-initial related-product elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"9cbaf16\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/product\/insulation-sandwich-panel\/\" target=\"_blank\" tabindex=\"-1\"><img decoding=\"async\" src=\"https:\/\/imenpol.com\/blog\/wp-content\/uploads\/2024\/03\/\u0639\u0627\u06cc\u0642-\u067e\u0627\u0646\u0644.jpg\" title=\"\" alt=\"\u0639\u0627\u06cc\u0642 \u067e\u0627\u0646\u0644\" loading=\"lazy\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><div class=\"elementor-image-box-title\"><a href=\"\/en\/product\/insulation-sandwich-panel\/\" target=\"_blank\">Sandwich panel insulation<\/a><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-64bfb36  table-contents e-flex e-con-boxed e-con e-parent\" data-id=\"64bfb36\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e67fd2 elementor-widget elementor-widget-text-editor\" data-id=\"3e67fd2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2><strong>The effect of temperature on polyurethane foam adhesion<\/strong><\/h2>\nTemperature is one of the most crucial factors that affect the density and adhesion of foam. In order to achieve desirable results, the temperature should be above 16 degrees Celsius. Low temperatures affect the chemical reactions in two ways:\n<ol>\n \t<li>They decrease the rate of chemical reactions.<\/li>\n \t<li>The heat of the thin chemical product layer is absorbed by the substrate upon contact.<\/li>\n<\/ol>\nIt should be noted that in terms of heat loss, the temperature of the substrate will have a much greater impact than the ambient air temperature because the heat exchange process between liquid and air is much slower than that between liquid and solid. Consequently, when the substrate temperature is too low, as soon as the foam is applied, the reaction heat is absorbed, and there will be no time for the foaming agent to evaporate, hence preventing foam formation. In fact, although the foaming process does not take more than a few minutes, the lower the temperature, the longer the curing time.\n\nOn the other hand, in cold working conditions, the foam cools quickly, which leads to compression and liquefaction of the gas, resulting in foam shrinkage. This phenomenon prevents the foam from adhering completely to the substrate surface. The thicker the layer of foam applied, the more severe this problem becomes. Therefore, it can be concluded that the degree of adhesion also depends on the thickness of the applied foam. When applying the foam in cold weather, it is recommended to apply the foam in several thin layers to prevent shrinkage.\n\nIf the foam is to be sprayed at a temperature below 5 degrees Celsius, it is recommended to pay attention to the type of foaming agent present in the <a title=\"polyol\" href=\"\/en\/product\/polyol\/\" target=\"_blank\" rel=\"noopener\">polyol<\/a> component. The lower the boiling point of the foaming agent, the more suitable it will be for use in low-temperature applications. The use of dry hot air, IR light, or a Dry warm air, IR light or space heater (not diesel) can be used to heat up local areas of surface before foaming. can locally heat the substrate before foaming.\n\nIn this article, factors affecting the adhesion of sprayed foam were discussed, and some solutions were suggested to prevent or reduce this problem. To find out more, feel free to contact our experts.\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Troubleshooting polyurethane spray foam involves understanding how factors like surface preparation, temperature, and moisture affect foam adhesion.<\/p>\n","protected":false},"author":4,"featured_media":15791,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[56],"class_list":["post-15789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-educational","tag-polyurethane-foam-spray"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Troubleshooting polyurethane spray foam - Imenpol blog<\/title>\n<meta name=\"description\" content=\"Troubleshooting polyurethane spray foam adhesion: Learn how temperature, surface prep, and moisture affect foam bonding for better results.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/imenpol.com\/blog\/en\/educational\/troubleshooting-polyurethane-spray-foam\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Troubleshooting polyurethane spray foam - 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