{"id":3207,"date":"2026-05-27T21:43:59","date_gmt":"2026-05-27T21:43:59","guid":{"rendered":"https:\/\/megainsulation.com.tr\/?p=3207"},"modified":"2026-05-27T21:43:59","modified_gmt":"2026-05-27T21:43:59","slug":"isi-yalitimi-tas-yunu-ve-eps-karsilastirmasi","status":"publish","type":"post","link":"https:\/\/megainsulation.com.tr\/en\/isi-yalitimi-tas-yunu-ve-eps-karsilastirmasi\/","title":{"rendered":"Thermal Insulation: Stone Wool and EPS Comparison \u2013 Which Material is Right for You?"},"content":{"rendered":"<p><span class=\"\">To improve the energy efficiency of a building,<\/span><span class=\"\"> The most important step to take to increase comfort and reduce bills is thermal insulation.<\/span><span class=\"\"> However, the biggest question that consumers and engineers face when starting an insulation project is this:<\/span> <b class=\"\" data-path-to-node=\"3\" data-index-in-node=\"235\">Stone wool or EPS (Expanded Polystyrene)?<\/b><span class=\"\"> Although both materials are commonly used in exterior wall insulation and interior insulation,<\/span><span class=\"\"> Their technical specifications and the advantages they offer are quite different from each other.<\/span><span class=\"\"> In this article,<\/span><span class=\"\"> To ensure the success of your insulation projects, we&#039;re conducting an in-depth comparison of these two popular materials and examining which is more suitable in which situations.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"\" data-path-to-node=\"5\">What are Stone Wool and EPS? Basic Definitions<\/h2>\n<p data-path-to-node=\"6\"><span class=\"\">Before we begin the comparison,<\/span><span class=\"\"> Let&#039;s briefly look at what these two materials are:<\/span><\/p>\n<ul data-path-to-node=\"7\">\n<li>\n<p data-path-to-node=\"7,0,0\"><b class=\"\" data-path-to-node=\"7,0,0\" data-index-in-node=\"0\">Stone Wool:<\/b><span class=\"\"> Volcanic rocks (basalt,<\/span><span class=\"\"> Dolomite is a mineral-based insulation material produced by melting it at very high temperatures and transforming it into fibers.<\/span><span class=\"\"> It is made of natural materials and, thanks to its fiber form, provides heat and sound insulation.<\/span><span class=\"\">\u00a0<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"7,1,0\"><b class=\"\" data-path-to-node=\"7,1,0\" data-index-in-node=\"0\">EPS (Expanded Polystyrene):<\/b><span class=\"\"> It is a foam-like material produced by molding petrochemical-derived polystyrene particles by expanding them with pentane gas.<\/span><span class=\"\"> %98&#8217;i havadan olu\u015fur,<\/span><span class=\"\"> This makes it extremely lightweight and economical.<\/span><span class=\"\">\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 class=\"\" data-path-to-node=\"10\">Thermal Insulation Performance and Technical Comparison<\/h2>\n<p data-path-to-node=\"11\"><span class=\"\">Both materials are good thermal insulators, but their performance differs.<\/span><span class=\"\"> Thermal insulation performance,<\/span><span class=\"\"> the thermal conductivity coefficient of the material (<\/span><span class=\"math-inline\" data-math=\"\\lambda\" data-index-in-node=\"146\">$\\lambda$<\/span><span class=\"\">It is measured with ).<\/span><span class=\"\"> The lower this value,<\/span><span class=\"\"> The insulation is so good.<\/span><\/p>\n<h3 class=\"\" data-path-to-node=\"12\">Thermal Conductivity<span class=\"math-inline\" data-math=\"\\lambda\" data-index-in-node=\"17\">$\\lambda$<\/span>Values:<\/h3>\n<table data-path-to-node=\"13\">\n<thead>\n<tr>\n<td><strong>Material Type<\/strong><\/td>\n<td><strong>Thermal Conductivity Coefficient (\u03bb \u2013 W\/mK)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"13,1,0,0\"><b data-path-to-node=\"13,1,0,0\" data-index-in-node=\"0\">Stone Wool<\/b><\/span><\/td>\n<td><span data-path-to-node=\"13,1,1,0\">0.035 \u2013 0.040<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"13,2,0,0\"><b data-path-to-node=\"13,2,0,0\" data-index-in-node=\"0\">EPS (White)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"13,2,1,0\">0.038 \u2013 0.040<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"13,3,0,0\"><b data-path-to-node=\"13,3,0,0\" data-index-in-node=\"0\">EPS (Carbonized Grey)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"13,3,1,0\">0.031 \u2013 0.034<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><span class=\"\">As shown in the table,<\/span><span class=\"\"> Traditional white EPS and rock wool have similar thermal insulation performance.<\/span><span class=\"\"> However,<\/span><span class=\"\"> produced by adding graphite additive <\/span><b class=\"\" data-path-to-node=\"14\" data-index-in-node=\"155\">Carbonized EPS<\/b><span class=\"\">,<\/span><span class=\"\"> lowest <\/span><span class=\"math-inline\" data-math=\"\\lambda\" data-index-in-node=\"178\"><span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">\u03bb<\/span><\/span><\/span><\/span><\/span><span class=\"\"> It has value.<\/span><span class=\"\"> This,<\/span><span class=\"\"> Carbonized EPS of the same thickness,<\/span><span class=\"\"> This means it will provide better thermal insulation than rock wool.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"\" data-path-to-node=\"16\">Fire Safety and Non-Combustible Classes<\/h2>\n<p data-path-to-node=\"17\"><span class=\"\">Fire safety,<\/span><span class=\"\"> This is especially vital for tall buildings and structures with high population density.<\/span><\/p>\n<ul data-path-to-node=\"18\">\n<li>\n<p data-path-to-node=\"18,0,0\"><b class=\"\" data-path-to-node=\"18,0,0\" data-index-in-node=\"0\">Stone Wool (Class A1 Non-Combustible):<\/b><span class=\"\"> The biggest advantage of rock wool is,<\/span><span class=\"\"> It is classified as a completely non-combustible building material.<\/span><span class=\"\"> It can withstand temperatures above 1000\u00b0C.,<\/span><span class=\"\"> It prevents the spread of fire and does not release toxic gases.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"18,1,0\"><b class=\"\" data-path-to-node=\"18,1,0\" data-index-in-node=\"0\">EPS (Class E Flame Retardant):<\/b><span class=\"\"> EPS,<\/span><span class=\"\"> Because it is polymer-based, it is a flammable material.<\/span><span class=\"\"> It produces smoke during a fire and can melt, contributing to the spread of the fire.<\/span><span class=\"\"> Although modern EPS products are generally manufactured to be &quot;flame retardant,&quot;,<\/span><span class=\"\"> It is much weaker in terms of fire safety compared to rock wool.<\/span><\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 class=\"\" data-path-to-node=\"20\">Sound Insulation and Acoustic Comfort<\/h2>\n<p data-path-to-node=\"21\"><span class=\"\">In addition to thermal insulation,<\/span><span class=\"\"> Blocking out outside noise also improves living comfort.<\/span><\/p>\n<ul data-path-to-node=\"22\">\n<li>\n<p data-path-to-node=\"22,0,0\"><b class=\"\" data-path-to-node=\"22,0,0\" data-index-in-node=\"0\">Stone Wool:<\/b><span class=\"\"> Thanks to its fibrous structure and porous texture, it absorbs sound waves.<\/span><span class=\"\"> It provides both excellent thermal and sound insulation (impact and airborne sound).<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"22,0,0\"><b class=\"\" data-path-to-node=\"22,1,0\" data-index-in-node=\"0\">EPS:<\/b><span class=\"\"> Foam structure is not as effective at dampening sound waves as rock wool.<\/span><span class=\"\"> Although it&#039;s a great material for thermal insulation,<\/span><span class=\"\"> Sound insulation performance is limited.<\/span><span class=\"\">\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 class=\"\" data-path-to-node=\"24\">Cost and Ease of Implementation<\/h2>\n<p data-path-to-node=\"25\"><span class=\"\">Budget and implementation time are also determining factors in insulation projects.<\/span><\/p>\n<ul data-path-to-node=\"26\">\n<li>\n<p data-path-to-node=\"26,0,0\"><b class=\"\" data-path-to-node=\"26,0,0\" data-index-in-node=\"0\">Cost:<\/b><span class=\"\"> EPS,<\/span><span class=\"\"> It is a much more economical solution compared to rock wool.<\/span><span class=\"\"> Both the material cost is lower and, thanks to its light weight, logistics and labor costs are reduced.<\/span><span class=\"\">\u00a0<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"26,1,0\"><b class=\"\" data-path-to-node=\"26,1,0\" data-index-in-node=\"0\">APPLICATION:<\/b><span class=\"\"> EPS is extremely lightweight,<\/span><span class=\"\"> It does not add extra load to the building and is easy to cut\/install.<\/span><span class=\"\"> Stone wool, on the other hand, is heavier.,<\/span><span class=\"\"> It is more difficult to apply and requires special equipment as it can irritate the skin.<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"\" data-path-to-node=\"28\">Conclusion: Which Material Suits You?<\/h2>\n<table data-path-to-node=\"29\">\n<thead>\n<tr>\n<td><strong>Feature<\/strong><\/td>\n<td><strong>Stone Wool<\/strong><\/td>\n<td><strong>EPS<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"29,1,0,0\">Heat insulation<\/span><\/td>\n<td><span data-path-to-node=\"29,1,1,0\">Good<\/span><\/td>\n<td><span data-path-to-node=\"29,1,2,0\">Very Good (Carbonized EPS)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,2,0,0\">Fire resistance<\/span><\/td>\n<td><span data-path-to-node=\"29,2,1,0\">Excellent (Class A1)<\/span><\/td>\n<td><span data-path-to-node=\"29,2,2,0\">Limited (Class E)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,3,0,0\">Sound Insulation<\/span><\/td>\n<td><span data-path-to-node=\"29,3,1,0\">Perfect<\/span><\/td>\n<td><span data-path-to-node=\"29,3,2,0\">Annoyed<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,4,0,0\">Cost<\/span><\/td>\n<td><span data-path-to-node=\"29,4,1,0\">High<\/span><\/td>\n<td><span data-path-to-node=\"29,4,2,0\">Low<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,5,0,0\">APPLICATION<\/span><\/td>\n<td><span data-path-to-node=\"29,5,1,0\">Difficult\/Heavy<\/span><\/td>\n<td><span data-path-to-node=\"29,5,2,0\">Easy\/Lightweight<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 class=\"\" data-path-to-node=\"30\">When Should You Choose Stone Wool?<\/h3>\n<ul data-path-to-node=\"31\">\n<li>\n<p data-path-to-node=\"31,0,0\"><span class=\"\">In high-rise buildings and public buildings where fire safety must be at the highest level.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"31,1,0\"><span class=\"\">For projects where both thermal and excellent sound insulation are required.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"31,2,0\"><span class=\"\">In situations where the budget is more flexible and long-term fire\/acoustic comfort is a priority.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"\" data-path-to-node=\"32\">When should you choose EPS?<\/h3>\n<ul data-path-to-node=\"33\">\n<li>\n<p data-path-to-node=\"33,0,0\"><span class=\"\">In insulation projects other than high-rise buildings,<\/span><span class=\"\"> When looking for a budget-friendly and economical solution.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"33,1,0\"><span class=\"\">In situations where the highest thermal insulation performance (with Carbonized EPS) is a priority.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"33,2,0\"><span class=\"\">For projects where the building should not be subjected to additional load and rapid implementation is desired.<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"34\"><b class=\"\" data-path-to-node=\"34\" data-index-in-node=\"0\">megainsulation.com.tr<\/b><span class=\"\"> aspect,<\/span><span class=\"\"> We offer the most suitable solution for your insulation projects with both our rock wool and EPS product lines.<\/span><span class=\"\"> To choose the most suitable materials for your project&#039;s needs and take advantage of our competitive pricing, contact us today! <a href=\"https:\/\/megainsulation.com.tr\/en\/iletisim\/\">contact<\/a> Go ahead.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Bir binan\u0131n enerji verimlili\u011fini art\u0131rmak, konforunu y\u00fckseltmek ve faturalar\u0131 d\u00fc\u015f\u00fcrmek i\u00e7in at\u0131lacak en \u00f6nemli ad\u0131m \u0131s\u0131 yal\u0131t\u0131m\u0131d\u0131r. Ancak yal\u0131t\u0131m projesine ba\u015flarken t\u00fcketicilerin ve m\u00fchendislerin kar\u015f\u0131s\u0131na \u00e7\u0131kan en b\u00fcy\u00fck soru \u015fudur: Ta\u015f y\u00fcn\u00fc m\u00fc, yoksa EPS (Genle\u015ftirilmi\u015f Polistiren) mi? Her iki malzeme de d\u0131\u015f cephe mantolama ve i\u00e7 yal\u0131t\u0131mda yayg\u0131n olarak kullan\u0131lsa da, teknik \u00f6zellikleri ve [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3208,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3207","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/posts\/3207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/comments?post=3207"}],"version-history":[{"count":1,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/posts\/3207\/revisions"}],"predecessor-version":[{"id":3209,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/posts\/3207\/revisions\/3209"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/media\/3208"}],"wp:attachment":[{"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/media?parent=3207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/categories?post=3207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/megainsulation.com.tr\/en\/wp-json\/wp\/v2\/tags?post=3207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}