{"id":13171,"date":"2026-09-28T18:28:07","date_gmt":"2026-09-28T18:28:07","guid":{"rendered":"https:\/\/www.raxpanel.com\/blog\/cold-room-ground-insulation\/"},"modified":"2026-09-28T18:28:07","modified_gmt":"2026-09-28T18:28:07","slug":"cold-room-ground-insulation","status":"publish","type":"post","link":"https:\/\/www.raxpanel.com\/ar\/blog\/cold-room-ground-insulation\/","title":{"rendered":"\u0643\u064a\u0641 \u064a\u062a\u0645 \u0639\u0645\u0644 \u0627\u0644\u0639\u0632\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0644\u0644\u0623\u0631\u0636\u064a\u0627\u062a \u0641\u064a \u0627\u0644\u063a\u0631\u0641\u0629 \u0627\u0644\u0628\u0627\u0631\u062f\u0629\u061f"},"content":{"rendered":"<style>.entry-content p{line-height:1.8;margin-bottom:28px;}.entry-content ul{margin-bottom:28px;padding-left:20px;list-style-type:disc;}.entry-content ol{margin-bottom:28px;padding-left:22px;}.entry-content li{margin-bottom:10px;line-height:1.6;}.entry-content h2{font-size:26px;line-height:1.35;margin:36px 0 20px;font-weight:700;}.entry-content h3{margin-bottom:16px;font-weight:700;}.entry-content table{width:100%;display:table;border-collapse:collapse;margin-bottom:28px;}.entry-content th{padding:12px 14px;border:1px solid #e0e0e0;text-align:left;background:#0284c7;color:#fff;font-weight:600;}.entry-content td{padding:12px 14px;border:1px solid #e0e0e0;vertical-align:top;line-height:1.6;}.entry-content tbody tr:nth-child(even) td{background:#f9f9f9;}<\/style>\n<p>Dawn on the yard, and the blinding layer reads true: the spirit level sits in the middle of the concrete with its bubble centred. Fifty metres away, last winter&#8217;s freezer floor tells the other half of the story: a hairline crack runs from the door frame toward the corner. That slab was level on handover day. The level is not lying &#8211; the ground under it moved.<\/p>\n<p>Cold room ground insulation is the trade nobody photographs and the reason that crack exists. RaxPanel rolls wall, ceiling, door and floor panels on one line, so the slabs we get called about usually fail below our product, not in it. The fix gets decided before a single panel arrives: what the ground is doing, which layer goes where, how thick, how strong, and when the floor needs heating.<\/p>\n<h2 id=\"why-cold-room-floors-fail-from-the-ground-up\">Why Cold Room Floors Fail From the Ground Up<\/h2>\n<p>Heat never stops moving. Ground beneath a slab sits at roughly 8-12 C all year, and a cold room pumps that heat out around the clock. The subsoil under an uninsulated floor therefore walks down toward 0 C, the temperature where frost heave begins. Chillers never cross that line, which is why they get away with thinner floors; freezers live below it every day.<\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Frost_heave\" target=\"_blank\" rel=\"noopener\">Frost heave<\/a> needs three conditions in one place: a frost-susceptible soil, a continual water supply below, and freezing temperatures reaching that depth. When all three hold, ice lenses grow toward the surface and lift whatever sits on them. Two of the three are site facts you can test before anything is poured. The third arrives the day the refrigeration switches on, so the design has to assume it.<\/p>\n<figure style=\"margin:0 0 32px 0;\"><img src=\"https:\/\/www.raxpanel.com\/wp-content\/uploads\/Cold-Room-Floor-Panel-1.jpg\" alt=\"Cold room floor panel - the insulated layer that keeps the ground beneath a slab unfrozen\" width=\"1120\" height=\"680\" class=\"wp-image-6272\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;border-radius:8px;\" srcset=\"https:\/\/www.raxpanel.com\/wp-content\/uploads\/Cold-Room-Floor-Panel-1.jpg 1120w, https:\/\/www.raxpanel.com\/wp-content\/uploads\/Cold-Room-Floor-Panel-1-300x182.jpg 300w, https:\/\/www.raxpanel.com\/wp-content\/uploads\/Cold-Room-Floor-Panel-1-1024x622.jpg 1024w, https:\/\/www.raxpanel.com\/wp-content\/uploads\/Cold-Room-Floor-Panel-1-768x466.jpg 768w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\" \/><figcaption style=\"font-size:14px;font-style:italic;color:#666;margin-top:10px;text-align:center;line-height:1.5;\">The floor is the one surface that fails out of sight &#8211; the ground under it moves first<\/figcaption><\/figure>\n<p>From there the chain runs downhill: the slab crowns, the door frame racks out of square, and the gasket stops sealing. Moist air trades places at every door opening, ice builds on the coil, and the compressor runs long every night. That chain is what cold room ground insulation exists to interrupt, and it is cheapest to interrupt at drawing stage. I walked a wholesaler&#8217;s -18 C store where a forklift had crossed one crack for three months. The tell was not the crack itself; it was the frost collar on the door gasket every morning.<\/p>\n<p>Neglect it long enough and the bill turns industrial. Forensic engineers documented a 60-year-old distribution warehouse whose floor heaved more than a foot at centre after dock doors stood open for days. Meltwater reached the insulation, and about three months later 32,000 sq ft of slab came out. Frost had grown 4-8 inches thick on the ceiling and ice passed 14 inches on the units before anyone connected the floor to the failures overhead.<\/p>\n<p>One case proves nothing about frequency &#8211; it is a forensic file, not a statistic. What it does prove is the mechanism, and the mechanism operates under every freezer floor you pour.<\/p>\n<h2 id=\"the-ground-floor-build-up-from-bottom-to-top\">The Ground Floor Build-Up From Bottom to Top<\/h2>\n<p>A cold room ground insulation package is ordered in layers, and the order matters more than any single product. Each layer covers for the one below it, so the stack gets read from the bottom up.<\/p>\n<ol>\n<li>Compacted sub-base &#8211; replaces frost-susceptible soil, locks the water supply out, and carries every load above it.<\/li>\n<li>Warm-side vapour barrier &#8211; stops ground moisture before it can reach the insulation.<\/li>\n<li>Insulation boards with staggered joints &#8211; the thermal break that holds the design temperature.<\/li>\n<li>Reinforced concrete screed &#8211; spreads wheel and rack loads so no board sees a point load alone.<\/li>\n<li>Wear surface, dry-shake emery or epoxy &#8211; takes the traffic so the screed does not.<\/li>\n<\/ol>\n<p>Start with the sub-base. Frost-susceptible soil gets replaced or stabilised, and the fill gets compacted in layers to a tested density, because heave cannot build without susceptible soil and water. Grading that drops surface water toward the slab undoes everything above it, so grade the yard to carry water away.<\/p>\n<p>The vapour barrier goes on the warm side of the insulation &#8211; the wrong-side placement is the most common error Frostbox names in floor construction. A barrier works like a raincoat: worn outside it sheds rain, worn inside it soaks the sweater all the same. Ground moisture travels in that same direction, up from below. Because the sheet tears easily, a bed of fine sand goes over it as protection. Design guidance calls for at least 6 mil sheet with joints overlapped 12 in &#8211; Thermalinc&#8217;s freezer floor design numbers, not statute.<\/p>\n<p>Insulation boards go down with joints staggered, the same brickwork rule you would apply to a wall. Two thinner layers with offset seams beat one thick layer, because a through-joint is a thermal shortcut and a moisture path. Esad Panel&#8217;s build sheets run 4+4 cm on positive-temperature rooms and 4+4+4 cm on negative ones. Large cold stores add a waterproof course and steel mesh into the stack. Setting the boards is panel work above the floor, and our <a href=\"\/blog\/how-to-install-cold-room-panels-step-by-step\/\">cold room panel installation guide<\/a> picks that trade up where this one ends.<\/p>\n<figure style=\"margin:0 0 32px 0;\"><img src=\"https:\/\/www.raxpanel.com\/wp-content\/uploads\/cold-room-panel-installation-step-3-joint-system-s-8-scaled.jpg\" alt=\"Cam-lock joint system on cold room panels closed during installation\" width=\"1120\" height=\"747\" class=\"wp-image-6928\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;border-radius:8px;\"><figcaption style=\"font-size:14px;font-style:italic;color:#666;margin-top:10px;text-align:center;line-height:1.5;\">Joints closed and staggered &#8211; a cold room floor is only as tight as its weakest seam<\/figcaption><\/figure>\n<p>On top sits the reinforced concrete screed &#8211; 12-15 cm of topping over the boards by Inver&#8217;s cold storage build notes, and at least 15 cm on large stores. Mesh goes on chairs, not flat on the insulation, or the cover concrete lies about its thickness. A dry-shake emery or epoxy finish takes the wheel traffic afterward.<\/p>\n<p>Structures longer than 50 m get cast expansion joints; settlement joints run 20-30 mm and seismic joints at least 50 mm. Cast them on your lines and the slab cracks where you chose, not where it pleases. Once the envelope closes, moisture control moves to the air inside &#8211; our <a href=\"\/blog\/cold-room-humidity-insulated-panels\/\">humidity and insulated panels guide<\/a> covers that half.<\/p>\n<h2 id=\"choosing-insulation-thickness-for-your-room-temperature\">Choosing Insulation Thickness for Your Room Temperature<\/h2>\n<p>Thickness follows the room temperature, not the budget. Frostbox&#8217;s design tables put ambient and cool rooms at 60-80 mm of floor insulation and chillers at 80-100 mm. From there the bands climb: 100-120 mm for -10 to 0 C, 120-150 mm at -18 C, and 150 mm and more in deep freeze. A cold room ground insulation schedule that steps down one band saves material on day one and pays for it in compressor hours every night after.<\/p>\n<figure style=\"margin:0 0 32px 0;\"><img src=\"https:\/\/www.raxpanel.com\/wp-content\/uploads\/cold-storage-wall-panels-50mm-80mm-chiller-amp-coolroom-pane-detail-scaled.jpg\" alt=\"50 mm and 80 mm cold storage panels - thickness follows the room temperature class\" width=\"1120\" height=\"735\" class=\"wp-image-7174\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;border-radius:8px;\"><figcaption style=\"font-size:14px;font-style:italic;color:#666;margin-top:10px;text-align:center;line-height:1.5;\">Thickness follows the temperature class &#8211; in the walls and under the floor alike<\/figcaption><\/figure>\n<div style=\"overflow-x:auto;\">\n<table>\n<thead>\n<tr>\n<th>Room temperature<\/th>\n<th>Duty class<\/th>\n<th>Floor insulation band<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>+8 to +15 C<\/td>\n<td>Ambient and cool stores<\/td>\n<td>60-80 mm<\/td>\n<\/tr>\n<tr>\n<td>0 to +8 C<\/td>\n<td>Chiller<\/td>\n<td>80-100 mm<\/td>\n<\/tr>\n<tr>\n<td>-10 to 0 C<\/td>\n<td>Low-temperature store<\/td>\n<td>100-120 mm<\/td>\n<\/tr>\n<tr>\n<td>-18 C<\/td>\n<td>Standard freezer<\/td>\n<td>120-150 mm<\/td>\n<\/tr>\n<tr>\n<td>-25 C and below<\/td>\n<td>Deep freeze and blast<\/td>\n<td>150 mm and more<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Material choice rides under the same table: PUR cores run about 0.022-0.024 W\/m-K and XPS about 0.030-0.036, so a PUR board holds the same design value a shade thinner. PIR boards come in 50-150 mm sheets of 1200 x 2500 mm with a reinforced concrete topping of 12-15 cm above. Finished floor panels simplify the stack: 80 to 200 mm thicknesses with a 40 \u00b1 2 kg\/m3 polyurethane core. The core is declared at 0.020-0.023 W\/m-K per EN 13165, with cam-lock joints closed by an 8 mm Allen key. Wear faces come embossed in stainless steel or plywood, sized to the traffic above.<\/p>\n<p>Chillers are the band where buyers ask about skipping the layer. Frostbox allows that a floor can sometimes be omitted at 0 to +8 C, and Stancold&#8217;s mechanism explains why &#8211; no freezing front without sub-zero. Heat loss through an uninsulated floor and condensation on a cold slab do not vanish with it, so the conservative call for staffed rooms and stored stock stays insulated. Core selection between PIR and PU is its own comparison; our <a href=\"\/blog\/pir-polyurethane-insulated-panels-cold-storage-guide\/\">PIR and PU panel guide<\/a> lays it out. The floor panels themselves come off the same line as our <a href=\"https:\/\/www.raxpanel.com\/cold-room-panel\/\" target=\"_blank\" rel=\"noopener\">cold room panel<\/a> range.<\/p>\n<h2 id=\"matching-the-floor-to-forklifts-and-racking\">Matching the Floor to Forklifts and Racking<\/h2>\n<p>Strength is a separate decision from thickness, and it is where domestic-scale advice fails cold rooms. Frostbox grades floors by compressive duty: 300 kPa minimum under stored goods, 500 kPa under pallet trucks and racking feet, 700 kPa and up for forklift and high-bay work.<\/p>\n<blockquote style=\"margin:32px 0;padding:4px 0 4px 24px;border-left:4px solid #0284c7;\">\n<p style=\"margin-bottom:0;font-size:18px;font-style:italic;\">The principle behind the tiers: spec against the rack foot, never the average distributed pallet.<\/p>\n<\/blockquote>\n<div class=\"cta-box\" style=\"background:#0f172a;border-radius:8px;padding:28px;margin:32px 0;color:#ffffff;\">\n<p style=\"color:#e2e8f0;\">RaxPanel rolls cold room floor panels on the same line as its wall, ceiling and door panels &#8211; over 1,700 m2 a day, shipped to projects in 30+ countries. Send the room size, the temperature class and the heaviest wheel load, and an engineer returns a floor panel schedule with the thickness and compressive class filled in.<\/p>\n<p><a href=\"https:\/\/www.raxpanel.com\/cold-room-panel\/\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#0284c7;color:#ffffff;padding:12px 28px;border-radius:4px;text-decoration:none;font-weight:600;\">Get the Floor Panel Schedule<\/a><\/div>\n<p>Panelised floors carry their own ratings, and they read like tyre load tables. On the MTH Algor rating quoted by Frostbox, pedestrian floor panels take 1,500 kg\/m2 and reinforced panels 3,000 kg\/m2 with 250 kg dynamic. Drive-in classes reach 4,000 kg\/m2 under a 1,000 kg dynamic load, measured as a point load over a 40 x 40 mm pad. One more number changes real projects: a floor raised on spacers loses about 60% of its load rating. That is why curbs and voids are engineered, not improvised.<\/p>\n<div style=\"overflow-x:auto;\">\n<table>\n<thead>\n<tr>\n<th>Floor duty<\/th>\n<th>Compressive strength to specify<\/th>\n<th>Panel class, MTH Algor rating<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Stored goods, static load<\/td>\n<td>300 kPa minimum<\/td>\n<td>Pedestrian: 1,500 kg\/m2<\/td>\n<\/tr>\n<tr>\n<td>Pallet trucks and racking feet<\/td>\n<td>500 kPa minimum<\/td>\n<td>Reinforced: 3,000 kg\/m2, 250 kg dynamic<\/td>\n<\/tr>\n<tr>\n<td>Forklifts and high-bay work<\/td>\n<td>700 kPa and up<\/td>\n<td>Drive-in: 4,000 kg\/m2, 1,000 kg dynamic<\/td>\n<\/tr>\n<tr>\n<td>Point load check<\/td>\n<td>40 x 40 mm pad<\/td>\n<td>Applies across all classes above<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Long static loads add a slower failure mode: compressive creep, the progressive deformation boards take under years of weight. Creep testing runs 122 to 608 days to simulate 10, 25 or 50 years of service, and strength can be declared at 10% deformation or, more conservatively, at 2%. On wet sites, EPS absorbs water and suffers in freeze-thaw while closed-cell XPS resists moisture &#8211; a debate worth having per project, not a verdict. Under rack posts, load distribution plates spread the point load so the tier you paid for is the tier you get.<\/p>\n<h2 id=\"when-your-floor-needs-heating-against-frost-heave\">When Your Floor Needs Heating Against Frost Heave<\/h2>\n<p>A heated floor is a design decision, not a legal requirement &#8211; no statute writes one into cold store construction, so be suspicious of anyone who quotes one. The mechanism sets the threshold instead: frost heave starts when the ground under the slab reaches 0 C. Frostbox&#8217;s guidance line sits near a -10 C room, below which underfloor heating belongs in a serious design. Warm climates do not exempt anyone. An engineer building a freezer where ambient never drops below 79 F got the same answer on an eng-tips thread: the room draws heat until the subsoil freezes.<\/p>\n<div class=\"callout callout-warning\" style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin:32px 0;\">\n<p style=\"margin-bottom:0;\"><strong>Warning:<\/strong> skipped frost protection does not announce itself. In one documented case, a warehouse floor heaved more than a foot at centre and 32,000 sq ft of slab came out. The clock had started about three months earlier, when meltwater from days of open dock doors seeped through cracks in the floor and soaked the insulation.<\/p>\n<\/div>\n<p>Three defences cover the cases where the answer is yes. Electric heat trace holds the subgrade at about 50 F with self-regulating cable spaced 2-4 ft &#8211; Thermalinc&#8217;s published design guidance. The same source warns that 5-8 ft spacing risks striping, and the trade applies a safety factor near 50% citing IEEE 515.1. A ventilated sub-base is the passive route: 150 mm PVC pipes laid to grade, or the floor raised on dwarf walls so air moves under the slab. A glycol loop is the third route, and recycling condenser waste heat through it turns a running cost into a recovery.<\/p>\n<p>Picture the warm-climate version, because it is the one buyers skip. A distributor builds a -20 C freezer where the July night never leaves 79 F, and the ground under it still walks toward freezing one compressor-hour at a time. Heating is the third leg of cold room ground insulation design &#8211; thickness, strength, an unfrozen ground. For freezers on susceptible soil it earns its line in the drawing.<\/p>\n<p>Chillers escape the whole question: a room that never passes below 0 C has no freezing front to feed. One geometry note from freezer practice: heated floors sit higher than adjacent slabs, so ramps get cast in on purpose.<\/p>\n<figure style=\"margin:0 0 32px 0;\"><img src=\"https:\/\/www.raxpanel.com\/wp-content\/uploads\/cold-storage-wall-panels-100mm-150mm-standard-freezer-panels-closeup-scaled.jpg\" alt=\"100 mm and 150 mm freezer panels - deeper cold calls for a thicker insulation envelope\" width=\"1120\" height=\"747\" class=\"wp-image-7175\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;border-radius:8px;\"><figcaption style=\"font-size:14px;font-style:italic;color:#666;margin-top:10px;text-align:center;line-height:1.5;\">A freezer draws heat from the ground until the subsoil freezes &#8211; the floor carries its own defence<\/figcaption><\/figure>\n<h2 id=\"the-foremans-handover-checklist-before-loading-stock\">The Foreman&#8217;s Handover Checklist Before Loading Stock<\/h2>\n<p>Floors sign off before stock arrives, not after the first complaint. Before the handover, walk the job down this list and make someone sign each line.<\/p>\n<ul>\n<li>Sub-base compaction records on file, with any soil replacement marked on the drawing.<\/li>\n<li>Vapour barrier on the warm side, joints lapped, every puncture patched before the sand went down.<\/li>\n<li>Insulation joints staggered between layers, no through-joints anywhere in the stack.<\/li>\n<li>Mesh chaired at height, screed thickness and grade matching the drawing.<\/li>\n<li>Heat-trace or glycol loop tested, sensor and alarm wired, where the design carries one.<\/li>\n<li>Curing period served and logged before the first pallet crosses the threshold.<\/li>\n<li>Door frames grouted tight, gaskets sealing on a closed-door test.<\/li>\n<\/ul>\n<p>Then keep one appointment most crews skip: walk the floor again at the end of the first quarter. The ESi warehouse gave its failure about three months to develop once water reached the insulation &#8211; a first-quarter re-read of floor temperatures is cheap insurance. Check the door frames with the same spirit level from pouring day; any movement shows up there first.<\/p>\n<p>The room itself &#8211; walk-in or modular, kit or built &#8211; sits above all of this, and our <a href=\"\/blog\/walk-in-vs-modular-cold-rooms\/\">walk-in vs modular comparison<\/a> owns that decision. The floor under it owns everything else. And the crack from the yard this morning? It started where this checklist starts: ground water, one winter, and a floor spec&#8217;d to a price instead of a soil report. Hand over the list, and the level stays true for twenty years.<\/p>\n<p><!-- raxgate:C1 rules-read 2026-09-29 --><\/p>\n<h2 id=\"faq-cold-room-floors\">Frequently Asked Questions About Cold Room Floors<\/h2>\n<div class=\"faq-card\">\n<div style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin-bottom:20px;\">\n<h3>How thick should cold room floor insulation be?<\/h3>\n<p>It follows room temperature: 60-80 mm in ambient rooms and 80-100 mm for a 0 to +8 C chiller. From there, 120-150 mm at -18 C, and 150 mm and more below -25 C (Frostbox design tables).<\/p>\n<\/div>\n<\/div>\n<div class=\"faq-card\">\n<div style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin-bottom:20px;\">\n<h3>Does a cold room floor always need heating?<\/h3>\n<p>No. A chiller that never drops below 0 C has no freezing front. Freezer floors on frost-susceptible soil, or running below about -10 C, need one of three defences: heat trace, a ventilated sub-base, or a glycol loop.<\/p>\n<\/div>\n<\/div>\n<div class=\"faq-card\">\n<div style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin-bottom:20px;\">\n<h3>What insulation works best under a freezer floor?<\/h3>\n<p>High-compression XPS or PIR, chosen against the heaviest wheel. Spec 300 kPa minimum under stored goods, 500 kPa under pallet trucks and racking feet, 700 kPa and up under forklifts, and prefer creep-tested boards.<\/p>\n<\/div>\n<\/div>\n<div class=\"faq-card\">\n<div style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin-bottom:20px;\">\n<h3>Can you skip floor insulation in a chiller?<\/h3>\n<p>Sometimes, at 0 to +8 C &#8211; Frostbox allows it in low-duty cases. Ground heat and condensation on a cold slab remain, so staffed rooms storing sensitive stock are better off insulated.<\/p>\n<\/div>\n<\/div>\n<div class=\"faq-card\">\n<div style=\"background:#f9f9f9;border-left:4px solid #0284c7;border-radius:4px;padding:25px;margin-bottom:20px;\">\n<h3>What happens if the ground freezes under a cold room?<\/h3>\n<p>Frost heave lifts the slab: ice lenses grow, the floor cracks, door frames distort and gaskets leak. Skimped cold room ground insulation is the usual root &#8211; one warehouse heaved over a foot and 32,000 sq ft came out.<\/p>\n<\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How thick should cold room floor insulation be?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It follows room temperature: 60-80 mm in ambient rooms and 80-100 mm for a 0 to +8 C chiller. 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Skimped cold room ground insulation is the usual root - one warehouse heaved over a foot and 32,000 sq ft came out.\"}}]}<\/script><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Article\",\"datePublished\":\"2026-09-29\",\"dateModified\":\"2026-09-29\",\"headline\":\"How to Make Ground Thermal Insulation In Cold Room?\",\"author\":{\"@type\":\"Organization\",\"name\":\"RaxPanel Editorial Team\"}}<\/script><\/p>\n<p><script type=\"application\/ld+json\" id=\"evo301-geo-ai-block\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Dataset\",\"name\":\"How to Make Ground Thermal Insulation In Cold Room?\",\"description\":\"Cold room ground insulation is the insulated layer built under a cold room slab: compacted sub-base, warm-side vapour barrier with sand protection, XPS or PIR boards laid with staggered joints, and a reinforced concrete screed. Design thickness runs from 60-80 mm in ambient rooms to 150 mm and more in deep freeze, with compressive strength from 300 kPa upward.\",\"creator\":{\"@type\":\"Organization\",\"name\":\"RaxPanel\"},\"datePublished\":\"2026-09-29\",\"data_statements\":[\"Subsoil beneath a cold store slab sits at roughly 8-12 C, so ground heat flows into the room around the clock and the floor is the surface that has to stop it (Frostbox).\",\"Design thickness bands: 60-80 mm ambient, 80-100 mm chiller, 100-120 mm for -10 to 0 C, 120-150 mm at -18 C, 150 mm and more in deep freeze (Frostbox).\",\"Compressive tiers: 300 kPa stored goods, 500 kPa pallet trucks and racking feet, 700 kPa and up forklift and high-bay duty; floors raised on spacers lose about 60% of their rating (Frostbox, MTH Algor panel classes 1,500\/3,000\/4,000 kg\/m2).\",\"Heat-trace design guidance: hold the subgrade near 50 F with self-regulating cable spaced 2-4 ft over a vapour barrier of at least 6 mil with 12 in overlaps (Thermalinc vendor design data); the trade applies a safety factor near 50% citing IEEE 515.1 (Frostbox).\",\"Forensic case: a 60-year-old warehouse floor heaved more than 1 ft at centre and 32,000 sq ft of slab was replaced about 3 months after meltwater soaked the insulation (ESi).\"],\"qa_concise\":[{\"question\":\"Thickness by room?\",\"answer\":\"80-100 mm chiller, 120-150 mm at -18 C, 150 mm and more in deep freeze.\"},{\"question\":\"Heating always required?\",\"answer\":\"No - chillers above 0 C skip it; freezers near -10 C or on susceptible soil choose heat trace, a vented sub-base or glycol.\"},{\"question\":\"Best core under a freezer?\",\"answer\":\"High-compression XPS or PIR, 300-700 kPa by duty, creep-tested.\"},{\"question\":\"What does failure look like?\",\"answer\":\"Frost heave lifts the slab; one 60-year-old warehouse heaved over a foot and 32,000 sq ft was replaced.\"}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0627\u0644\u0641\u062c\u0631 \u0641\u064a \u0627\u0644\u0641\u0646\u0627\u0621\u060c \u0648\u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0645\u062a\u0648\u0647\u0650\u0651\u062c\u0629 \u062a\u064f\u0638\u0647\u0631 \u0627\u0644\u062d\u0642\u064a\u0642\u0629: \u0631\u0648\u062d \u0627\u0644\u0645\u0633\u062a\u0648\u0649 sits \u0641\u064a \u0645\u0646\u062a\u0635\u0641 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629 \u0648\u0628\u062d\u0628\u0648\u0628\u062a\u0647 \u0641\u064a \u0627\u0644\u0645\u0646\u062a\u0635\u0641. \u0639\u0644\u0649 \u0628\u064f\u0639\u062f \u062e\u0645\u0633\u064a\u0646 \u0645\u062a\u0631\u0627\u064b\u060c \u062a\u062e\u0628\u0631\u0643 \u0623\u0631\u0636\u064a\u0629 \u0627\u0644\u0641\u0631\u064a\u0632\u0631 \u0645\u0646 \u0627\u0644\u0634\u062a\u0627\u0621 \u0627\u0644\u0645\u0627\u0636\u064a \u0628\u0627\u0644\u0646\u0635\u0641 \u0627\u0644\u0622\u062e\u0631 \u0645\u0646 \u0627\u0644\u0642\u0635\u0629: \u0634\u0642\u064c\u0651 \u0634\u0639\u0631\u064a\u0651 \u064a\u0645\u062a\u062f\u0651 \u0645\u0646 \u0625\u0637\u0627\u0631 \u0627\u0644\u0628\u0627\u0628 \u0646\u062d\u0648 \u0627\u0644\u0632\u0627\u0648\u064a\u0629. \u0643\u0627\u0646\u062a \u062a\u0644\u0643 \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0645\u0633\u062a\u0648\u064a\u0629 \u0639\u0646\u062f \u0627\u0644\u062a\u0633\u0644\u064a\u0645\u2026<\/p>","protected":false},"author":2,"featured_media":6271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","rank_math_title":"Cold Room Ground Insulation: Thickness & Frost Heave","rank_math_description":"Cold room ground insulation done right: sub-base, vapour barrier, 80-150 mm insulation, load classes and frost heave protection for freezer floors.","rank_math_focus_keyword":"cold room ground insulation","rank_math_robots":"","rank_math_canonical_url":"","rank_math_facebook_title":"","rank_math_facebook_description":"","rank_math_twitter_title":"","rank_math_twitter_description":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_focuskw":"","_yoast_wpseo_canonical":"","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_opengraph-title":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_twitter-title":"","_yoast_wpseo_twitter-description":"","_aioseo_title":"","_aioseo_description":"","_aioseo_keywords":"","_aioseo_robots_default":"","_aioseo_robots_noindex":"","_aioseo_og_title":"","_aioseo_og_description":"","_aioseo_twitter_title":"","_aioseo_twitter_description":"","aiosp_title":"","aiosp_description":"","aiosp_keywords":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_analysis_target_kw":"","_seopress_robots_canonical":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_genesis_title":"","_genesis_description":"","_genesis_canonical":"","_genesis_noindex":"","_genesis_nofollow":"","slim_seo":""},"categories":[95],"tags":[],"class_list":["post-13171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cold-room","category-95","description-off"],"_links":{"self":[{"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/posts\/13171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/comments?post=13171"}],"version-history":[{"count":0,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/posts\/13171\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/media\/6271"}],"wp:attachment":[{"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/media?parent=13171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/categories?post=13171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.raxpanel.com\/ar\/wp-json\/wp\/v2\/tags?post=13171"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}