{"id":48658,"date":"2025-11-12T14:24:32","date_gmt":"2025-11-12T13:24:32","guid":{"rendered":"https:\/\/www.elementishop.com\/ratgeber\/unkategorisiert\/fireplace-filling-materials-lava-stone-fire-glass-aesthetics-meets-function\/"},"modified":"2026-02-09T17:15:14","modified_gmt":"2026-02-09T16:15:14","slug":"fireplace-filling-materials-lava-stone-fire-glass-aesthetics-meets-function","status":"publish","type":"post","link":"https:\/\/www.elementishop.com\/en\/ratgeber\/purchasing-advice\/fireplace-filling-materials-lava-stone-fire-glass-aesthetics-meets-function\/","title":{"rendered":"Fireplace filling materials: lava stone &amp; fire glass &#8211; aesthetics meets function"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.elementishop.com\/en\/product-tag\/fire-pit-media\/\" target=\"_blank\" rel=\"noopener\">Filling media<\/a> (fire media) determine the flame pattern, heat emission and appearance of your <a href=\"\/?product_cat=gas-fireplaces\" target=\"_blank\" rel=\"noopener\">gas fireplace<\/a>. This guide explains in practical terms how lava stone and fire glass work, how to use them correctly and how to maintain them safely &#8211; for an individual, long-lasting result on the terrace, patio or next to furniture made of <a href=\"https:\/\/www.elementishop.com\/en\/ratgeber\/material-knowledge\/material-description-gfrc\/\" target=\"_blank\" rel=\"noopener\">GF concrete<\/a> (glass fiber reinforced concrete). <\/p>\n<div style=\"display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:flex-start;margin:20px 0;\">\n  <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/10\/Red-Lava-Pebble-scaled.jpg\" alt=\"Red Lava Pebble\" style=\"width:32%;max-width:360px;height:auto;border-radius:8px;\"\/>\n  <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/04\/ODS02101.jpg\" alt=\"Fire Pit Glass Clear\" style=\"width:32%;max-width:360px;height:auto;border-radius:8px;\"\/>\n  <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/04\/ODW01003.jpg\" alt=\"Fire Pit Glass Blue\" style=\"width:32%;max-width:360px;height:auto;border-radius:8px;\"\/>\n<\/div>\n\n  <h2 id=\"warum-fuellmedien\">Why does a gas fireplace need filling media?<\/h2>\n  <p>Without filling material, the flame is concentrated on individual points. A suitable medium distributes the gas more evenly, stabilizes the flame pattern and at the same time covers the burner for a harmonious look. Common media are lava stone, fire glass and ceramic wood (ceramic logs).  <\/p><div style=\"width:80%;margin:0 auto;text-align:center;\">\n  <a href=\"https:\/\/www.elementishop.com\/en\/product\/aurora-patio-fire-gas\/\" target=\"_blank\" rel=\"noopener\">\n    <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/02\/OFG114-4-1.webp\" alt=\"Aurora gas fireplace made of Beton\" style=\"width:100%;height:auto;display:block;margin:0 auto;border:none;\"\/>\n  <\/a>\n<\/div>\n\n  <div role=\"note\" aria-label=\"Sicherheitshinweis\" style=\"background:#fff8e1;border:1px solid #ffe082;border-radius:8px;padding:12px;margin:12px 0;\">\n    <strong>Tip:<\/strong> <em>Do not<\/em> use ordinary stones or river pebbles. Trapped moisture can turn into steam when heated &#8211; the stones can <strong>explode<\/strong>. \n  <\/div>\n\n  <h2 id=\"menge\">How much filling material is needed?<\/h2>\n  <p>As a rule of thumb, a layer of approx. <strong>2.5 cm (1 inch)<\/strong> above the burner at normal line pressure is sufficient. Layers that are too thick impede the gas flow; layers that are too thin produce unsteady flames. <\/p>\n  <p><em>Note on nozzle burners (e.g. torpedo\/bullet):<\/em> The nozzles must remain visible or be flush with the medium. Only cover the pipe segment, not the nozzle openings. <\/p>\n\n  <h2 id=\"lavastein\">Lava rock (Lava Rock)<\/h2>\n<div style=\"width:80%;margin:0 auto;text-align:center;\">\n  <a href=\"https:\/\/www.elementishop.com\/en\/product\/westport-patio-fire-table\/\" target=\"_blank\" rel=\"noopener\">\n    <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/02\/OFG135-5-1.webp\" alt=\"Westport gas fireplace in Beton\" style=\"width:100%;height:auto;display:block;margin:0 auto;border:none;\"\/>\n  <\/a>\n<\/div>\n\n  <h3>Features &#038; benefits<\/h3>\n  <p>Lava stone is a natural, porous volcanic rock. The pores are formed when magma solidifies and make the material light, heat-resistant and durable. It is low-maintenance and is ideal as a <strong>base<\/strong> under more decorative media.  <\/p>\n  <ul>\n    <li>Very high temperature resistance, can be used permanently outdoors<\/li>\n    <li>Natural, soft flame pattern thanks to good gas distribution<\/li>\n    <li>Cost-efficient &#8211; popular as a base layer<\/li>\n  <\/ul>\n  <p><strong>Optical consistency:<\/strong> Size, shape and color may vary depending on the batch. For a uniform appearance, we recommend <em>buying<\/em> sufficient quantities <em>once<\/em>. <\/p>\n  <div role=\"note\" aria-label=\"Design-Tipp\" style=\"background:#eef7ff;border:1px solid #90caf9;border-radius:8px;padding:12px;margin:12px 0;\">\n    <strong>Design tip:<\/strong> <em>Tumbled Lava Rock<\/em> offers the same heat resistance, but looks smoother and more homogeneous &#8211; ideal for modern settings.\n  <\/div>\n\n  <h3>Layering lava stone correctly<\/h3>\n  <ol>\n    <li>Read the manufacturer&#8217;s instructions and check the required quantity.<\/li>\n    <li>Wear sturdy gloves.<\/li>\n    <li>Pour out the lava stone in advance and remove dust\/breakage (prevents clogged burner openings).<\/li>\n    <li>Smaller pieces at the bottom, larger pieces at the top &#8211; distribute evenly.<\/li>\n  <\/ol>\n\n  <h3>Lava stone as a base layer<\/h3>\n  <p>Fill the pool area up to approx. <strong>3\/4 of the height<\/strong> with lava stone and add a decorative top layer on top &#8211; e.g. fire glass or decorative pebbles &#8211; for a high-quality, multi-layered appearance on a moderate budget.<\/p>\n\n  <h3>Dealing with moisture<\/h3>\n  <p>Lava stone is hygroscopic. Moist stones can burst open when heated up quickly. <\/p>\n  <ul>\n    <li><strong>Start in stages:<\/strong> Start with <em>a low<\/em> flame height for 15-30 minutes (longer if necessary if humidity is high), then gradually increase.<\/li>\n    <li><strong>Protection:<\/strong> Always <em>cover<\/em> when not in use to keep out rain and condensation.<\/li>\n    <li><strong>Winter storage:<\/strong> If possible, store in a dry place.<\/li>\n    <li><strong>Important:<\/strong> Only cover <em>completely cooled<\/em> fireplaces &#8211; avoid heat damage to covers.<\/li>\n  <\/ul>\n\n  <h2 id=\"feuerglas\">Fire Pit Glass<\/h2>\n  <h3>What is tempered fire glass?<\/h3>\n  <p><a href=\"https:\/\/www.elementishop.com\/en\/product-category\/accessories\/lava-rocks-and-fire-glass\/\" target=\"_blank\" rel=\"noopener\">Fire glass<\/a> is <strong>toughened (tempered)<\/strong>, colored safety glass. Thermal tempering creates a compressive stress field on the surface &#8211; the resistance increases many times over compared to normal glass. Edges are tumbled\/polished so that the surface is safe to touch.  <\/p>\n  <ul>\n    <li>Heat-stable, color and shape-retaining, <em>no<\/em> melting, <em>no<\/em> emissions<\/li>\n    <li>High reflection: radiates heat noticeably into the outside space<\/li>\n    <li>Wide color spectrum, elegant, modern look<\/li>\n  <\/ul>\n  <div role=\"alert\" aria-label=\"Warnhinweis\" style=\"background:#ffebee;border:1px solid #ef9a9a;border-radius:8px;padding:12px;margin:12px 0;\">\n    <strong>Never use normal glass!<\/strong> Non-tempered glass can <em>shatter<\/em> due to thermal shock &#8211; considerable risk of injury.\n  <\/div>\n\n  <h3>Types of fire glass<\/h3>\n<div style=\"display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;margin:0;padding:0;\">\n  <a href=\"https:\/\/www.elementishop.com\/en\/product\/bergamo-outdoor-gas-fire-table\/\" target=\"_blank\" rel=\"noopener\" style=\"flex:0 0 260px;width:260px;margin:8px;\">\n    <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/02\/OFG419DG-1-1.webp\" alt=\"Bergamo gas fireplace in Beton\" style=\"display:block;width:100%;height:auto;border:none;\" loading=\"lazy\"\/>\n  <\/a>\n  <a href=\"https:\/\/www.elementishop.com\/en\/product\/varna-fire-pit\/\" target=\"_blank\" rel=\"noopener\" style=\"flex:0 0 260px;width:260px;margin:8px;\">\n    <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/02\/OFP121BB-3-1.webp\" alt=\"Varna marble porcelain fire table\" style=\"display:block;width:100%;height:auto;border:none;\" loading=\"lazy\"\/>\n  <\/a>\n  <a href=\"https:\/\/www.elementishop.com\/en\/product\/firenze\/\" target=\"_blank\" rel=\"noopener\" style=\"flex:0 0 260px;width:260px;margin:8px;\">\n    <img decoding=\"async\" src=\"https:\/\/www.elementishop.com\/wp-content\/uploads\/2025\/05\/EAG12-CW-9-1.webp\" alt=\"Firenze ethanol fireplace made of Beton\" style=\"display:block;width:100%;height:auto;border:none;\" loading=\"lazy\"\/>\n  <\/a>\n<\/div>\n\n\n  <ul>\n    <li><strong>Accent (decor):<\/strong> Small, irregular pieces &#8211; ideal for adding colorful accents, also as a top layer.<\/li>\n    <li><strong>Reflective (mirror effect):<\/strong> With a reflective surface for intense light reflections &#8211; a strong presence during the day and with a flame.<\/li>\n    <li><strong>Smooth (smooth\/rounded):<\/strong> Uniform, &#8220;pearl-like&#8221; shapes with a soft feel &#8211; minimalist and modern.<\/li>\n  <\/ul>\n\n  <h3>Reduce costs &#038; optimize optics<\/h3>\n  <p>Fire glass is of higher quality &#8211; and more expensive &#8211; than lava stone. Popular solution: <\/p>\n  <ul>\n    <li><strong>Hybrid layering:<\/strong> lava stone at the bottom (budget &#038; volume), fire glass at the top (appearance).<\/li>\n    <li><strong>Choice of color with propane:<\/strong> Lava stone can lead to slight <em>soot formation<\/em> on the glass with propane. Dark glass colors conceal deposits; alternatively, <em>clear<\/em> glass at the bottom, colored glass at the top &#8211; this reduces cleaning effort. <\/li>\n  <\/ul>\n\n  <h3>Cleaning fire glass<\/h3>\n  <ol>\n    <li>Put on protective gloves and remove the glass completely.<\/li>\n    <li>Move carefully in lukewarm soapy water, then rinse with clear water.<\/li>\n    <li>Spread out on a cloth and <strong>allow to dry completely<\/strong>.<\/li>\n    <li>Only then return to the cold, dry fire.<\/li>\n  <\/ol>\n\n  <h2 id=\"sicherheit\">Safety &#038; operation<\/h2>\n  <ul>\n    <li>Filling media are designed for <strong>gas fireplaces<\/strong> (natural gas\/propane).<\/li>\n    <li>Do not stack any additional materials <em>on<\/em> the glass top layer.<\/li>\n    <li>Provide at least <strong>two<\/strong> ventilation openings on the pool &#8211; avoid overheating.<\/li>\n    <li>After switching off, the medium remains hot &#8211; only transfer\/clean <strong>when cold<\/strong>.<\/li>\n    <li>Frequent sooting indicates an incorrect gas\/air ratio &#8211; have the installation checked.<\/li>\n    <li>Always wear <strong>gloves<\/strong> when handling; glass can <em>break<\/em> if dropped.<\/li>\n    <li><strong>Cover<\/strong> when not in use to minimize moisture, dust and UV exposure.<\/li>\n  <\/ul>\n\n  <h2 id=\"vergleich\">Lava stone vs. fire glass &#8211; a direct comparison<\/h2>\n  <div style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0;\">\n    <table style=\"width:100%;border-collapse:collapse;min-width:520px;\">\n      <thead>\n        <tr>\n          <th style=\"text-align:left;border-bottom:2px solid #ddd;padding:8px;\">Criterion<\/th>\n          <th style=\"text-align:left;border-bottom:2px solid #ddd;padding:8px;\">Lava stone<\/th>\n          <th style=\"text-align:left;border-bottom:2px solid #ddd;padding:8px;\">Fire glass<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Material<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Natural volcanic rock, porous<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Tempered, colored safety glass<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Flame pattern<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Gentle, &#8220;organic&#8221;<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Brilliant, highly reflective<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Heat reflection<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Medium<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">High (reflective surface)<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Care<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Low<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Regular cleaning recommended<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Costs<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Lower<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Higher<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Style<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Natural, rustic<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Modern, luxurious<\/td>\n        <\/tr>\n        <tr>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Hybrid use<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Ideal as a base layer<\/td>\n          <td style=\"padding:8px;border-bottom:1px solid #eee;\">Ideal as a top layer<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2 id=\"schluss\">Conclusion<\/h2>\n  <p>Filling media are more than just decoration: they shape the flame, improve heat emission and define the style of your fireplace. <strong>Lava stone<\/strong> scores with naturalness, robustness and budget-friendliness. <strong>Fire glass<\/strong> provides maximum brilliance, strong heat reflection and a modern, colorful signature. The combination of base layer (lava stone) and top layer (fire glass) combines the best of both worlds &#8211; visually, technically and economically. <\/p>\n\n<div class=\"faq-accordion\">\n  <h2>FAQ &#8211; Filling media for gas fireplaces<\/h2>\n\n  <details class=\"faq-item\" open=\"\">\n    <summary>Why are filling media important in a gas fireplace?<\/summary>\n    <div class=\"faq-body\">\n      <p>Filling media such as lava stone or fire glass distribute the gas evenly, stabilize the flame pattern and cover the burner. Without a medium, flames appear unsteady and the appearance is inconsistent. <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>How much filling material should I use?<\/summary>\n    <div class=\"faq-body\">\n      <p>Rule of thumb: approx. <strong>2.5 cm (1 inch)<\/strong> above the burner. Too thick impedes the gas flow, too thin produces unsteady flames. With jet burners, the nozzles must remain visible or flush.  <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>What is lava stone and what are its advantages?<\/summary>\n    <div class=\"faq-body\">\n      <p>Lava stone is porous volcanic rock, very heat-resistant and durable. It provides a natural, soft flame pattern, is budget-friendly and ideal as a <strong>base layer<\/strong> under decorative media. <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>What is fire glass and how does it differ from lava stone?<\/summary>\n    <div class=\"faq-body\">\n      <p>Fire glass is tempered, colored safety glass. It reflects heat, creates a brilliant, modern appearance and offers many colors. It is more expensive than lava stone and should be cleaned regularly.  <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>Can lava stone and fire glass be combined?<\/summary>\n    <div class=\"faq-body\">\n      <p>Yes, proven: lava stone at the bottom (volume, distribution, cost savings), fire glass at the top (appearance, color, shine). This allows you to combine efficiency with a high-quality appearance.  <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>How do I clean fire glass properly?<\/summary>\n    <div class=\"faq-body\">\n      <ul>\n        <li>Wear gloves and remove the glass completely.<\/li>\n        <li>Clean in lukewarm soapy water, then rinse thoroughly.<\/li>\n        <li>Allow to dry completely and only reinsert when <strong>cold<\/strong>.<\/li>\n      <\/ul>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>What to do with wet lava stone?<\/summary>\n    <div class=\"faq-body\">\n      <p>First preheat on <strong>a low flame for 15-30 minutes<\/strong> (longer if humidity is high) to allow moisture to escape. Cover or store in a dry place when not in use. <\/p>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>Are there any visual\/technical differences in the result?<\/summary>\n    <div class=\"faq-body\">\n      <ul>\n        <li><strong>Lava stone:<\/strong> Natural, gentle flame pattern; medium heat reflection.<\/li>\n        <li><strong>Fire glass:<\/strong> Brilliant reflections, modern look; high heat reflection.<\/li>\n      <\/ul>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>What mistakes should I avoid when filling?<\/summary>\n    <div class=\"faq-body\">\n      <ul>\n        <li>Do not use normal glass, river pebbles or random stones (risk of explosion).<\/li>\n        <li>Do not cover the nozzles of jet burners.<\/li>\n        <li>Do not fill too high &#8211; the gas flow and flame pattern will suffer.<\/li>\n      <\/ul>\n    <\/div>\n  <\/details>\n\n  <details class=\"faq-item\">\n    <summary>How do I increase safety during operation?<\/summary>\n    <div class=\"faq-body\">\n      <ul>\n        <li>Provide at least two ventilation openings; keep flammable materials away.<\/li>\n        <li>Never leave burning unattended; only cover\/clean when cool.<\/li>\n        <li>If sooting occurs frequently, have the gas\/air mixture checked professionally.<\/li>\n      <\/ul>\n    <\/div>\n  <\/details>\n<\/div>\n  <h2 class=\"related-content__title\">Recommended further content<\/h2>\n  <ul class=\"related-content__list\">\n    <li class=\"related-content__item\">\n      <a href=\"https:\/\/www.elementishop.com\/en\/ratgeber\/purchasing-advice\/the-complete-experience-with-your-elementi-gas-fireplace-accessories-that-make-the-difference\/\" target=\"_blank\" rel=\"noopener\">\n  Accessories for gas fireplaces: Buying advice &#038; recommendations\n      <\/a>\n    <\/li>\n    <li class=\"related-content__item\">\n      <a href=\"https:\/\/www.elementishop.com\/en\/ratgeber\/fireplaces-guide\/fireplace-btu-basics-heat-output-for-your-outdoor-area\/\" target=\"_blank\" rel=\"noopener\">\n  Fireplace guide: BTU guide &#8211; correct output &#038; dimensioning\n      <\/a>\n    <\/li>\n  <\/ul>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Filling media (fire media) determine the flame pattern, heat emission and appearance of your gas fireplace. This guide explains in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":28076,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[477,484],"tags":[],"class_list":["post-48658","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fireplaces-guide","category-purchasing-advice"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lava stone vs. fire glass: the right filling material for fireplaces<\/title>\n<meta name=\"description\" content=\"Lava stone or fire glass? 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