{"id":30804,"date":"2026-09-03T10:09:16","date_gmt":"2026-09-03T10:09:16","guid":{"rendered":"https:\/\/penosil.com\/uk\/?p=30804"},"modified":"2026-09-03T10:12:16","modified_gmt":"2026-09-03T10:12:16","slug":"window-door-foam-explained-penosil-gunfoam-55-156-vs-gunfoam-173","status":"publish","type":"post","link":"https:\/\/penosil.com\/uk\/window-door-foam-explained-penosil-gunfoam-55-156-vs-gunfoam-173\/","title":{"rendered":"Window &amp; Door Foam Explained: PENOSIL Gunfoam 55 156 vs. Gunfoam 173"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Window and door installation demands precision, consistent application, and reliable materials. Although the installation process itself remains largely the same throughout the year, working conditions can vary considerably with the weather. Temperature, in particular, can affect how polyurethane foam expands, cures, and performs during application.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To help professional installers achieve reliable results in different conditions, PENOSIL offers two specialised window and door installation foams: <strong><a href=\"https:\/\/penosil.com\/uk\/product\/window-gun-foam-penosil-156\/\">Window &amp; Door Gunfoam 55 156<\/a><\/strong> and <strong><a href=\"https:\/\/penosil.com\/uk\/product\/all-season-installation-gun-foam-penosil-173\/\">Window &amp; Door Gunfoam 173<\/a><\/strong>. Both are designed to deliver professional installation performance, but each is optimised for a different temperature range.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Application Temperature Matters<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Polyurethane foam is sensitive to the conditions in which it is applied. Ambient temperature can influence foam expansion, curing time, cell structure, adhesion, and overall ease of application. Using a foam suited to the temperature on site helps installers maintain control during application and achieve consistent sealing and insulation results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For this reason, choosing a foam according to the season and working conditions can be more effective than using the same product throughout the year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>PENOSIL Window &amp; Door Gunfoam 55\u00a0156<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:15% auto\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/penosil.com\/uk\/product\/window-gun-foam-penosil-156\/\"><img loading=\"lazy\" decoding=\"async\" width=\"523\" height=\"1080\" src=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK.png\" alt=\"PENOSIL Window &amp; Door Gunfoam 55 156 high yield window installation gun foam product image\" class=\"wp-image-26599 size-full\" srcset=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK.png 523w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK-250x516.png 250w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK-120x248.png 120w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK-87x180.png 87w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2023\/04\/156_Window_26_Door_Gunfoam_55_156_UK-300x620.png 300w\" sizes=\"auto, (max-width: 523px) 100vw, 523px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/penosil.com\/uk\/product\/window-gun-foam-penosil-156\/\">PENOSIL Window &amp; Door Gunfoam 55 156<\/a><\/strong> is designed for standard and warm installation conditions. With an application temperature range of <strong>+5\u00b0C to +40\u00b0C<\/strong>, it is particularly well suited to spring, summer, and early autumn projects.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key Features<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yield up to <strong>55 litres<\/strong><\/li>\n\n\n\n<li>Low curing pressure to minimise stress on window and door frames<\/li>\n\n\n\n<li>Excellent thermal insulation 0,033 W\/(m\u00b7K)<\/li>\n\n\n\n<li>Excellent acoustic insulation 62 dB<\/li>\n\n\n\n<li>Application temperatures from <strong>+5\u00b0C to +40\u00b0C<\/strong><\/li>\n\n\n\n<li>Optimised for warmer working environments<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Its extended upper application limit of +40\u00b0C makes it particularly valuable during summer installations, where conventional foams may become more difficult to control. The formulation allows installers to continue working efficiently even during hot weather without compromising installation quality.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"330\" src=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-700x330.png\" alt=\"\" class=\"wp-image-30806\" srcset=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-700x330.png 700w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-250x118.png 250w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-768x362.png 768w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-120x57.png 120w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-180x85.png 180w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-600x283.png 600w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application-300x141.png 300w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/foam-application.png 940w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>PENOSIL Window &amp; Door Gunfoam 173<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:15% auto\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/penosil.com\/uk\/product\/all-season-installation-gun-foam-penosil-173\/\"><img loading=\"lazy\" decoding=\"async\" width=\"523\" height=\"1080\" src=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK.png\" alt=\"PENOSIL Window &amp; Door Gunfoam 173 All season installation gun foam product image\" class=\"wp-image-27207 size-full\" srcset=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK.png 523w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK-250x516.png 250w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK-120x248.png 120w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK-87x180.png 87w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2024\/01\/173_Window26Door_Gunfoam_173_UK-300x620.png 300w\" sizes=\"auto, (max-width: 523px) 100vw, 523px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/penosil.com\/uk\/product\/all-season-installation-gun-foam-penosil-173\/\"><strong>PENOSIL Window &amp; Door Gunfoam 173<\/strong><\/a> is formulated as an all-season installation foam for professionals working throughout the year.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key Features<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yield up to <strong>53 litres<\/strong><\/li>\n\n\n\n<li>Low curing pressure<\/li>\n\n\n\n<li>Excellent thermal insulation 0,033 W\/(m\u00b7K)<\/li>\n\n\n\n<li>Excellent acoustic insulation 62 dB<\/li>\n\n\n\n<li>Application temperatures from <strong>-5\u00b0C to +30\u00b0C<\/strong><\/li>\n\n\n\n<li>Suitable for year-round installation<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Its ability to be applied in temperatures as low as -5\u00b0C allows installation work to continue when colder weather arrives. This helps contractors extend the construction season without changing installation methods or sacrificing performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Comparing the Two Products<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes advgb-dyn-4ba84671\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Property<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Window &amp; Door Gunfoam 55 156<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Window &amp; Door Gunfoam 173<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Foam yield<\/td><td class=\"has-text-align-center\" data-align=\"center\">Up to 55 L<\/td><td class=\"has-text-align-center\" data-align=\"center\">Up to 53 L<\/td><\/tr><tr><td>Curing pressure<\/td><td class=\"has-text-align-center\" data-align=\"center\">Low<\/td><td class=\"has-text-align-center\" data-align=\"center\">Low<\/td><\/tr><tr><td>Thermal insulation<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,033 W\/(m\u00b7K)<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,033 W\/(m\u00b7K)<\/td><\/tr><tr><td>Acoustic insulation<\/td><td class=\"has-text-align-center\" data-align=\"center\">62 dB<\/td><td class=\"has-text-align-center\" data-align=\"center\">62 dB<\/td><\/tr><tr><td>Application temperature<\/td><td class=\"has-text-align-center\" data-align=\"center\">+5\u00b0C to +40\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">-5\u00b0C to +30\u00b0C<\/td><\/tr><tr><td>Best suited for<\/td><td class=\"has-text-align-center\" data-align=\"center\">Standard and warm conditions<\/td><td class=\"has-text-align-center\" data-align=\"center\">Year-round including colder conditions<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The Difference Is Temperature, Not Performance<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When comparing the two products, it becomes clear that the primary distinction is <strong>application temperature range<\/strong>, not installation quality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Both foams provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Professional-grade sealing performance<\/li>\n\n\n\n<li>Low curing pressure that helps reduce the risk of frame deformation<\/li>\n\n\n\n<li>Excellent thermal insulation for improved energy efficiency<\/li>\n\n\n\n<li>Excellent sound insulation<\/li>\n\n\n\n<li>High foam yield suitable for professional installation work<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The small difference in foam yield (55 L versus 53 L) is negligible in practical applications. Instead, installers should select the product according to the environmental conditions on site.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"337\" src=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-700x337.png\" alt=\"\" class=\"wp-image-30807\" srcset=\"https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-700x337.png 700w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-250x120.png 250w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-768x369.png 768w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-120x58.png 120w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-180x87.png 180w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-600x289.png 600w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation-300x144.png 300w, https:\/\/penosil.com\/uk\/wp-content\/uploads\/sites\/17\/2026\/09\/window-installation.png 940w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Which Foam Should Professionals Choose?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The answer depends on the working conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong><a href=\"https:\/\/penosil.com\/uk\/product\/window-gun-foam-penosil-156\/\">Window &amp; Door Gunfoam 55 156<\/a><\/strong> when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Installing during warmer months<\/li>\n\n\n\n<li>Ambient temperatures exceed +30\u00b0C<\/li>\n\n\n\n<li>Summer installation conditions require a foam optimised for higher temperatures<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong><a href=\"https:\/\/penosil.com\/uk\/product\/all-season-installation-gun-foam-penosil-173\/\">Window &amp; Door Gunfoam 173<\/a><\/strong> when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Working during autumn or winter<\/li>\n\n\n\n<li>Temperatures approach freezing<\/li>\n\n\n\n<li>Installation needs to continue down to -5\u00b0C<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Distributors Should Stock Both<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Professional installers encounter a wide range of weather conditions throughout the year. By offering both Window &amp; Door Gunfoam 55 156 and Window &amp; Door Gunfoam 173, distributors can provide customers with a solution for virtually every installation season.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Instead of asking installers to compromise with one general-purpose product, the PENOSIL range enables them to select the foam best suited to the day&#8217;s conditions. This improves application comfort, helps maintain productivity, and supports consistent installation quality throughout the year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both PENOSIL Window &amp; Door Gunfoam 55 156 and Window &amp; Door Gunfoam 173 are premium installation foams engineered for professional window and door installation. They deliver nearly identical yield, excellent insulation properties, and low curing pressure, ensuring reliable installation performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The key difference lies in their recommended application temperature ranges. Window &amp; Door Gunfoam 55 156 is optimised for standard and warm conditions up to +40\u00b0C, while Window &amp; Door Gunfoam 173 extends installation capability into colder weather down to -5\u00b0C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By choosing the right foam for the season &#8211; or stocking both products &#8211; professionals can ensure efficient application, reliable performance, and high-quality installations regardless of the weather.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"Window and door installation demands precision, consistent application, and reliable materials. Although the installation process itself remains largely the same throughout the year, working conditions can vary considerably with the weather. Temperature, in particular, can affect how polyurethane foam expands, cures, and performs during application. To help professional installers achieve reliable results in different conditions, [&hellip;]","protected":false},"author":5,"featured_media":30805,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-30804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Window &amp; Door Foam: Gunfoam 55 156 vs 173 | PENOSIL<\/title>\n<meta name=\"description\" content=\"Compare PENOSIL Gunfoam 156 and Gunfoam 173 for window and door installation. 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