{"id":148,"date":"2026-05-26T12:18:41","date_gmt":"2026-05-26T11:18:41","guid":{"rendered":"https:\/\/fireparts.com\/blog\/?p=148"},"modified":"2026-06-04T13:32:23","modified_gmt":"2026-06-04T12:32:23","slug":"vermiculite-board","status":"publish","type":"post","link":"https:\/\/fireparts.com\/blog\/vermiculite-board","title":{"rendered":"Vermiculite Board"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"271\" height=\"75\" src=\"https:\/\/fireparts.com\/blog\/wp-content\/uploads\/2025\/11\/firepartslogo-new.png\" alt=\"fireparts.com logo\" class=\"wp-image-13\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is Vermiculite Board?<\/strong><\/h2>\n\n\n\n<p class=\"has-link-color wp-elements-f4874cbb44b9c6480d2f4672e507c563 wp-block-paragraph\">A <strong><a href=\"https:\/\/fireparts.com\/trianco-roomheater-stove-spares\/trianco-roomheater-boiler-list-spares\">vermiculite board<\/a><\/strong> is a non-combustible, high-temperature insulation panel made from compressed natural volcanic minerals. Unlike traditional heavy clay firebricks, vermiculite sheets are incredibly lightweight, highly efficient at reflecting heat, and tested to withstand continuous temperatures exceeding <strong>1100\u00b0C<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because it possesses excellent thermal insulation properties, it keeps the heat inside your firebox, forcing it out into your living room rather than letting it escape through the back of the chimney.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why You Should Replace Your Fire bricks or Vermiculite Board<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Failing to replace a cracked or crumbling internal stove liner compromises both safety and heating efficiency. Replace broken bricks or vermiculite board as soon as possible. You can also upgrade your internal bricks with high-grade boards providing several immediate benefits:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Maximum Thermal Efficiency<\/strong>: By reflecting heat back into the firebox the vermiculite board ensures a cleaner, hotter, and more efficient fuel burn.<\/li>\n\n\n\n<li><strong>Stove Outer Shell Protection<\/strong>: It prevents intense, direct flames from warping or cracking the cast iron or steel body of your stove.<\/li>\n\n\n\n<li><strong>Easy Customisation<\/strong>: You do not need to hunt down expensive, discontinued manufacturer bricks and can easily cut custom sizes yourself.<\/li>\n\n\n\n<li><strong>Versatile High-Heat Applications<\/strong>: Beyond domestic wood burners, vermiculite board is ideal for lining fireplace openings, barbecues, and outdoor pizza ovens.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Technical Specifications: 25mm vs. 30mm Fire Boards<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing the right thickness is vital for maintaining the intended internal dimensions and airflow of your stove.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>25mm Plain Vermiculite Board<\/th><th><strong>30mm Plain Vermiculite Board<\/strong><\/th><\/tr><tr><td>Material Composition &#8211; Compressed Skamol V-1100 mineral<\/td><td>Material Composition &#8211; Compressed Skamol V-1100 mineral<\/td><\/tr><tr><td>Max Temperature Rating &#8211; 1100\u00b0C (Non-combustible)<\/td><td>Max Temperature Rating &#8211; 1100\u00b0C (Non-combustible)<\/td><\/tr><tr><td>Texture &amp; Finish &#8211; Plain and smooth on both sides<\/td><td>Texture &amp; Finish &#8211; Plain and smooth on both sides<\/td><\/tr><tr><td>Best Used For &#8211; Standard stove side\/back bricks<\/td><td>Best Used For &#8211; Heavy-duty baffle plates &amp; deep liners<\/td><\/tr><tr><td>Where to Purchase &#8211; <a href=\"https:\/\/fireparts.com\/vermiculite-fire-board\/vermiistant-culite-heat-res25mm-thick-plain-fire-board-sheets\" target=\"_blank\" rel=\"noreferrer noopener\">Fireparts.com 25mm Fire Board<\/a><\/td><td>Where to Purchase &#8211; <a href=\"https:\/\/fireparts.com\/vermiculite-heatproof-30mm-thick-plain-fire-board-sheets\" target=\"_blank\" rel=\"noreferrer noopener\">Fireparts.com 30mm Fire Board<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step-by-Step: How to Cut Your Own Vermiculite Fire Bricks<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the greatest advantages of using dense vermiculite board is how easy they are to work with and you do not need specialized stone-cutting machinery; standard woodworking tools will do the job perfectly.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Remove and Measure<\/strong>: Carefully extract your old, damaged firebrick from the stove and measure its exact height, width, and thickness.<\/li>\n\n\n\n<li><strong>Trace the Pattern<\/strong>: Place your old brick or measurements onto a new sheet, such as a Skamol V-1100 board from Fireparts.com, and trace the outline with a pencil.<\/li>\n\n\n\n<li><strong>Cut to Shape<\/strong>: Use a standard hand saw or a sharp wood saw to cut along your traced line. The material cuts smoothly with minimal resistance.<\/li>\n\n\n\n<li><strong>Smooth the Edges<\/strong>: Sand down any rough corners or edges using sandpaper, or shave them with a sharp Stanley knife for a flush fit.<\/li>\n\n\n\n<li><strong>Install<\/strong>: Drop the newly cut brick back into your stove&#8217;s liner slots. No fire cement or adhesive is required to hold it in place as they should fit like a Jigsaw Puzzle.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Frequently Asked Questions About Vermiculite Board<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Can you use regular insulation board inside a fireplace?<\/p>\n\n\n\n<p class=\"has-contrast-color has-text-color has-link-color wp-elements-b6ea97d8ddd530952f56fe9f152916a7 wp-block-paragraph\"><strong>No<\/strong>. Standard building insulation cannot withstand direct flame contact or extreme temperatures so you must use dedicated, non-combustible panels rated up to 1100\u00b0C, like the options found on the Fireparts.com <strong><a href=\"https:\/\/fireparts.com\/vermiculite-fire-board\">Vermiculite Fire Board Product Page<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How long do vermiculite fire bricks last?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on how often you light your fire and the type of wood used, a high-quality vermiculite liner typically lasts between <strong>1 to 3 years<\/strong>. If you notice deep cracks where the steel behind the brick is exposed, it is time for a replacement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Can I buy vermiculite boards in bulk?<\/strong><\/h2>\n\n\n\n<p class=\"has-link-color wp-elements-8ea599a9e5b34adb3a65c47937fe72c8 wp-block-paragraph\">Yes. If you manage multiple properties or run a stove installation business, purchasing full pallets offers significant savings so check out the <a href=\"https:\/\/fireparts.com\/vermiculite-fire-board\/vermiculite-fire-board-heat-resistant-wholesale-bulk-buy\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Fireparts.com Wholesale Bulk Buy Fire Board Options<\/strong><\/a> for competitive pricing on bulk sheets.<\/p>\n\n\n\n<p class=\"has-link-color wp-elements-cad61489391928fb282fe23a23d2378b wp-block-paragraph\"><strong><a href=\"https:\/\/fireparts.com\/vermiculite-fire-board\">Visit our website for a range of Vermiculite Boards<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is Vermiculite Board? A vermiculite board is a non-combustible, high-temperature insulation panel made from compressed natural volcanic minerals. Unlike traditional heavy clay firebricks, vermiculite sheets are incredibly lightweight, highly efficient at reflecting heat, and tested to withstand continuous temperatures exceeding 1100\u00b0C. Because it possesses excellent thermal insulation properties, it keeps the heat inside your [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[48,36,14,37,35,38],"class_list":["post-148","post","type-post","status-publish","format-standard","hentry","category-stove-maintenance-servicing","tag-charnwood","tag-coalbrookdale","tag-fire-bricks","tag-parkray","tag-rayburn","tag-vermiculite"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vermiculite Board - Fireparts - Stove &amp; Fire Maintenance Blog<\/title>\n<meta name=\"description\" content=\"What is Vermiculite Board? Failing to replace a cracked or crumbling internal stove liner compromises both safety and heating efficiency.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fireparts.com\/blog\/vermiculite-board\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vermiculite Board - Fireparts - Stove &amp; Fire Maintenance Blog\" \/>\n<meta property=\"og:description\" content=\"What is Vermiculite Board? 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